Articles | Volume 17, issue 3
https://doi.org/10.5194/bg-17-715-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-715-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
11 Feb 2020
Research article |
| 11 Feb 2020
| 11 Feb 2020
Increasing soil carbon stocks in eight permanent forest plots in China
Jianxiao Zhu
State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral
Agricultural Science and Technology, Lanzhou University, Lanzhou, 730020,
China
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Chuankuan Wang
Center for Ecological Research, Northeast Forestry University, 26
Hexing Road, Harbin, 150040, China
Zhang Zhou
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Research Institute of Tropical Forestry, Chinese Academy of Forestry,
no. 682 Guangshanyi Road, Tianhe District, Guangzhou, 510520, China
Guoyi Zhou
Key Laboratory of Vegetation Restoration and Management of Degraded
Ecosystems, South China Botanical Garden, Chinese Academy of Sciences,
Guangzhou, 510650, China
Xueyang Hu
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Lai Jiang
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Yide Li
Research Institute of Tropical Forestry, Chinese Academy of Forestry,
no. 682 Guangshanyi Road, Tianhe District, Guangzhou, 510520, China
Guohua Liu
Research Center for Eco-Environmental Sciences, Chinese Academy of
Sciences, Beijing, 100085, China
Chengjun Ji
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Shuqing Zhao
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Peng Li
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Jiangling Zhu
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Zhiyao Tang
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Chengyang Zheng
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
Richard A. Birdsey
Woods Hole Research Center, Falmouth, MA 02540, USA
Yude Pan
US Department of Agriculture Forest Service, Durham, NH 03824, USA
Jingyun Fang
CORRESPONDING AUTHOR
Department of Ecology, College of Urban and Environmental Science, and
Key Laboratory for Earth Surface Processes of the Ministry of Education,
Peking University, Beijing, 100871, China
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Dark septate endophytic fungi associated with pioneer grass inhabiting volcanic deposits and their functions in promoting plant growth
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Biogeosciences, 21, 1–11, https://doi.org/10.5194/bg-21-1-2024, https://doi.org/10.5194/bg-21-1-2024, 2024
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Xianjin He, Laurent Augusto, Daniel S. Goll, Bruno Ringeval, Ying-Ping Wang, Julian Helfenstein, Yuanyuan Huang, and Enqing Hou
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Imane Slimani, Xia-Zhu Barker, Patricia Lazicki, and William Horwath
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There is a strong link between nitrogen availability and iron minerals in soils. These minerals have multiple outcomes for nitrogen availability depending on soil conditions and properties. For example, iron can limit microbial degradation of nitrogen in aerated soils but has opposing outcomes in non-aerated soils. This paper focuses on the multiple ways iron can affect nitrogen bioavailability in soils.
Emiko K. Stuart, Laura Castañeda-Gómez, Wolfram Buss, Jeff R. Powell, and Yolima Carrillo
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Adetunji Alex Adekanmbi, Laurence Dale, Liz Shaw, and Tom Sizmur
Biogeosciences, 20, 2207–2219, https://doi.org/10.5194/bg-20-2207-2023, https://doi.org/10.5194/bg-20-2207-2023, 2023
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The decomposition of soil organic matter and flux of carbon dioxide are expected to increase as temperatures rise. However, soil organic matter decomposition is a two-step process whereby large molecules are first broken down outside microbial cells and then respired within microbial cells. We show here that these two steps are not equally sensitive to increases in soil temperature and that global warming may cause a shift in the rate-limiting step from outside to inside the microbial cell.
Mercedes Román Dobarco, Alexandre M. J-C. Wadoux, Brendan Malone, Budiman Minasny, Alex B. McBratney, and Ross Searle
Biogeosciences, 20, 1559–1586, https://doi.org/10.5194/bg-20-1559-2023, https://doi.org/10.5194/bg-20-1559-2023, 2023
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Soil organic carbon (SOC) is of a heterogeneous nature and varies in chemistry, stabilisation mechanisms, and persistence in soil. In this study we mapped the stocks of SOC fractions with different characteristics and turnover rates (presumably PyOC >= MAOC > POC) across Australia, combining spectroscopy and digital soil mapping. The SOC stocks (0–30 cm) were estimated as 13 Pg MAOC, 2 Pg POC, and 5 Pg PyOC.
Frederick Büks
Biogeosciences, 20, 1529–1535, https://doi.org/10.5194/bg-20-1529-2023, https://doi.org/10.5194/bg-20-1529-2023, 2023
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Ultrasonication with density fractionation of soils is a commonly used method to separate soil organic matter pools, which is, e.g., important to calculate carbon turnover in landscapes. It is shown that the approach that merges soil and dense solution without mixing has a low recovery rate and causes co-extraction of parts of the retained labile pool along with the intermediate pool. An alternative method with high recovery rates and no cross-contamination was recommended.
Tino Peplau, Christopher Poeplau, Edward Gregorich, and Julia Schroeder
Biogeosciences, 20, 1063–1074, https://doi.org/10.5194/bg-20-1063-2023, https://doi.org/10.5194/bg-20-1063-2023, 2023
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We buried tea bags and temperature loggers in a paired-plot design in soils under forest and agricultural land and retrieved them after 2 years to quantify the effect of land-use change on soil temperature and litter decomposition in subarctic agricultural systems. We could show that agricultural soils were on average 2 °C warmer than forests and that litter decomposition was enhanced. The results imply that deforestation amplifies effects of climate change on soil organic matter dynamics.
Joseph Okello, Marijn Bauters, Hans Verbeeck, Samuel Bodé, John Kasenene, Astrid Françoys, Till Engelhardt, Klaus Butterbach-Bahl, Ralf Kiese, and Pascal Boeckx
Biogeosciences, 20, 719–735, https://doi.org/10.5194/bg-20-719-2023, https://doi.org/10.5194/bg-20-719-2023, 2023
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The increase in global and regional temperatures has the potential to drive accelerated soil organic carbon losses in tropical forests. We simulated climate warming by translocating intact soil cores from higher to lower elevations. The results revealed increasing temperature sensitivity and decreasing losses of soil organic carbon with increasing elevation. Our results suggest that climate warming may trigger enhanced losses of soil organic carbon from tropical montane forests.
Andres Tangarife-Escobar, Georg Guggenberger, Xiaojuan Feng, Guohua Dai, Carolina Urbina-Malo, Mina Azizi-Rad, and Carlos Sierra
EGUsphere, https://doi.org/10.5194/egusphere-2023-210, https://doi.org/10.5194/egusphere-2023-210, 2023
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Soil organic matter stability depends on future temperature and precipitation scenarios. We used radiocarbon (14C) data and model predictions to understand how the transit time of carbon varies under environmental change in grasslands and peatlands. Soil moisture affected the Δ14C of peatlands while temperature did not have any influence. Our models showed the correspondence between Δ14C and transit time and could allow to understand future interactions between terrestrial and atmospheric carbon.
Johanna Pihlblad, Louise C. Andresen, Catriona A. Macdonald, David S. Ellsworth, and Yolima Carrillo
Biogeosciences, 20, 505–521, https://doi.org/10.5194/bg-20-505-2023, https://doi.org/10.5194/bg-20-505-2023, 2023
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Elevated CO2 in the atmosphere increases forest biomass productivity when growth is not limited by soil nutrients. This study explores how mature trees stimulate soil availability of nitrogen and phosphorus with free-air carbon dioxide enrichment after 5 years of fumigation. We found that both nutrient availability and processes feeding available pools increased in the rhizosphere, and phosphorus increased at depth. This appears to not be by decomposition but by faster recycling of nutrients.
Rodrigo Vargas and Van Huong Le
Biogeosciences, 20, 15–26, https://doi.org/10.5194/bg-20-15-2023, https://doi.org/10.5194/bg-20-15-2023, 2023
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Quantifying the role of soils in nature-based solutions requires accurate estimates of soil greenhouse gas (GHG) fluxes. We suggest that multiple GHG fluxes should not be simultaneously measured at a few fixed time intervals, but an optimized sampling approach can reduce bias and uncertainty. Our results have implications for assessing GHG fluxes from soils and a better understanding of the role of soils in nature-based solutions.
Kristine Karstens, Benjamin Leon Bodirsky, Jan Philipp Dietrich, Marta Dondini, Jens Heinke, Matthias Kuhnert, Christoph Müller, Susanne Rolinski, Pete Smith, Isabelle Weindl, Hermann Lotze-Campen, and Alexander Popp
Biogeosciences, 19, 5125–5149, https://doi.org/10.5194/bg-19-5125-2022, https://doi.org/10.5194/bg-19-5125-2022, 2022
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Soil organic carbon (SOC) has been depleted by anthropogenic land cover change and agricultural management. While SOC models often simulate detailed biochemical processes, the management decisions are still little investigated at the global scale. We estimate that soils have lost around 26 GtC relative to a counterfactual natural state in 1975. Yet, since 1975, SOC has been increasing again by 4 GtC due to a higher productivity, recycling of crop residues and manure, and no-tillage practices.
Petri Kiuru, Marjo Palviainen, Arianna Marchionne, Tiia Grönholm, Maarit Raivonen, Lukas Kohl, and Annamari Laurén
Biogeosciences, 19, 5041–5058, https://doi.org/10.5194/bg-19-5041-2022, https://doi.org/10.5194/bg-19-5041-2022, 2022
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Peatlands are large carbon stocks. Emissions of carbon dioxide and methane from peatlands may increase due to changes in management and climate. We studied the variation in the gas diffusivity of peat with depth using pore network simulations and laboratory experiments. Gas diffusivity was found to be lower in deeper peat with smaller pores and lower pore connectivity. However, gas diffusivity was not extremely low in wet conditions, which may reflect the distinctive structure of peat.
Rachael Akinyede, Martin Taubert, Marion Schrumpf, Susan Trumbore, and Kirsten Küsel
Biogeosciences, 19, 4011–4028, https://doi.org/10.5194/bg-19-4011-2022, https://doi.org/10.5194/bg-19-4011-2022, 2022
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Soils will likely become warmer in the future, and this can increase the release of carbon dioxide (CO2) into the atmosphere. As microbes can take up soil CO2 and prevent further escape into the atmosphere, this study compares the rate of uptake and release of CO2 at two different temperatures. With warming, the rate of CO2 uptake increases less than the rate of release, indicating that the capacity to modulate soil CO2 release into the atmosphere will decrease under future warming.
Giuseppe Cipolla, Salvatore Calabrese, Amilcare Porporato, and Leonardo V. Noto
Biogeosciences, 19, 3877–3896, https://doi.org/10.5194/bg-19-3877-2022, https://doi.org/10.5194/bg-19-3877-2022, 2022
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Enhanced weathering (EW) is a promising strategy for carbon sequestration. Since models may help to characterize field EW, the present work applies a hydro-biogeochemical model to four case studies characterized by different rainfall seasonality, vegetation and soil type. Rainfall seasonality strongly affects EW dynamics, but low carbon sequestration suggests that an in-depth analysis at the global scale is required to see if EW may be effective to mitigate climate change.
Vao Fenotiana Razanamahandry, Marjolein Dewaele, Gerard Govers, Liesa Brosens, Benjamin Campforts, Liesbet Jacobs, Tantely Razafimbelo, Tovonarivo Rafolisy, and Steven Bouillon
Biogeosciences, 19, 3825–3841, https://doi.org/10.5194/bg-19-3825-2022, https://doi.org/10.5194/bg-19-3825-2022, 2022
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In order to shed light on possible past vegetation shifts in the Central Highlands of Madagascar, we measured stable isotope ratios of organic carbon in soil profiles along both forested and grassland hillslope transects in the Lake Alaotra region. Our results show that the landscape of this region was more forested in the past: soils in the C4-dominated grasslands contained a substantial fraction of C3-derived carbon, increasing with depth.
Katherine E. O. Todd-Brown, Rose Z. Abramoff, Jeffrey Beem-Miller, Hava K. Blair, Stevan Earl, Kristen J. Frederick, Daniel R. Fuka, Mario Guevara Santamaria, Jennifer W. Harden, Katherine Heckman, Lillian J. Heran, James R. Holmquist, Alison M. Hoyt, David H. Klinges, David S. LeBauer, Avni Malhotra, Shelby C. McClelland, Lucas E. Nave, Katherine S. Rocci, Sean M. Schaeffer, Shane Stoner, Natasja van Gestel, Sophie F. von Fromm, and Marisa L. Younger
Biogeosciences, 19, 3505–3522, https://doi.org/10.5194/bg-19-3505-2022, https://doi.org/10.5194/bg-19-3505-2022, 2022
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Research data are becoming increasingly available online with tantalizing possibilities for reanalysis. However harmonizing data from different sources remains challenging. Using the soils community as an example, we walked through the various strategies that researchers currently use to integrate datasets for reanalysis. We find that manual data transcription is still extremely common and that there is a critical need for community-supported informatics tools like vocabularies and ontologies.
Alessandro Montemagno, Christophe Hissler, Victor Bense, Adriaan J. Teuling, Johanna Ziebel, and Laurent Pfister
Biogeosciences, 19, 3111–3129, https://doi.org/10.5194/bg-19-3111-2022, https://doi.org/10.5194/bg-19-3111-2022, 2022
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We investigated the biogeochemical processes that dominate the release and retention of elements (nutrients and potentially toxic elements) during litter degradation. Our results show that toxic elements are retained in the litter, while nutrients are released in solution during the first stages of degradation. This seems linked to the capability of trees to distribute the elements between degradation-resistant and non-degradation-resistant compounds of leaves according to their chemical nature.
Laura Sereni, Bertrand Guenet, Charlotte Blasi, Olivier Crouzet, Jean-Christophe Lata, and Isabelle Lamy
Biogeosciences, 19, 2953–2968, https://doi.org/10.5194/bg-19-2953-2022, https://doi.org/10.5194/bg-19-2953-2022, 2022
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This study focused on the modellisation of two important drivers of soil greenhouse gas emissions: soil contamination and soil moisture change. The aim was to include a Cu function in the soil biogeochemical model DNDC for different soil moisture conditions and then to estimate variation in N2O, NO2 or NOx emissions. Our results show a larger effect of Cu on N2 and N2O emissions than on the other nitrogen species and a higher effect for the soils incubated under constant constant moisture.
Marie Spohn and Johan Stendahl
Biogeosciences, 19, 2171–2186, https://doi.org/10.5194/bg-19-2171-2022, https://doi.org/10.5194/bg-19-2171-2022, 2022
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We explored the ratios of carbon (C), nitrogen (N), and phosphorus (P) of organic matter in Swedish forest soils. The N : P ratio of the organic layer was most strongly related to the mean annual temperature, while the C : N ratios of the organic layer and mineral soil were strongly related to tree species even in the subsoil. The organic P concentration in the mineral soil was strongly affected by soil texture, which diminished the effect of tree species on the C to organic P (C : OP) ratio.
Moritz Mainka, Laura Summerauer, Daniel Wasner, Gina Garland, Marco Griepentrog, Asmeret Asefaw Berhe, and Sebastian Doetterl
Biogeosciences, 19, 1675–1689, https://doi.org/10.5194/bg-19-1675-2022, https://doi.org/10.5194/bg-19-1675-2022, 2022
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The largest share of terrestrial carbon is stored in soils, making them highly relevant as regards global change. Yet, the mechanisms governing soil carbon stabilization are not well understood. The present study contributes to a better understanding of these processes. We show that qualitative changes in soil organic matter (SOM) co-vary with alterations of the soil matrix following soil weathering. Hence, the type of SOM that is stabilized in soils might change as soils develop.
Jasmin Fetzer, Emmanuel Frossard, Klaus Kaiser, and Frank Hagedorn
Biogeosciences, 19, 1527–1546, https://doi.org/10.5194/bg-19-1527-2022, https://doi.org/10.5194/bg-19-1527-2022, 2022
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As leaching is a major pathway of nitrogen and phosphorus loss in forest soils, we investigated several potential drivers in two contrasting beech forests. The composition of leachates, obtained by zero-tension lysimeters, varied by season, and climatic extremes influenced the magnitude of leaching. Effects of nitrogen and phosphorus fertilization varied with soil nutrient status and sorption properties, and leaching from the low-nutrient soil was more sensitive to environmental factors.
Karis J. McFarlane, Heather M. Throckmorton, Jeffrey M. Heikoop, Brent D. Newman, Alexandra L. Hedgpeth, Marisa N. Repasch, Thomas P. Guilderson, and Cathy J. Wilson
Biogeosciences, 19, 1211–1223, https://doi.org/10.5194/bg-19-1211-2022, https://doi.org/10.5194/bg-19-1211-2022, 2022
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Planetary warming is increasing seasonal thaw of permafrost, making this extensive old carbon stock vulnerable. In northern Alaska, we found more and older dissolved organic carbon in small drainages later in summer as more permafrost was exposed by deepening thaw. Younger and older carbon did not differ in chemical indicators related to biological lability suggesting this carbon can cycle through aquatic systems and contribute to greenhouse gas emissions as warming increases permafrost thaw.
Pengzhi Zhao, Daniel Joseph Fallu, Sara Cucchiaro, Paolo Tarolli, Clive Waddington, David Cockcroft, Lisa Snape, Andreas Lang, Sebastian Doetterl, Antony G. Brown, and Kristof Van Oost
Biogeosciences, 18, 6301–6312, https://doi.org/10.5194/bg-18-6301-2021, https://doi.org/10.5194/bg-18-6301-2021, 2021
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We investigate the factors controlling the soil organic carbon (SOC) stability and temperature sensitivity of abandoned prehistoric agricultural terrace soils. Results suggest that the burial of former topsoil due to terracing provided an SOC stabilization mechanism. Both the soil C : N ratio and SOC mineral protection regulate soil SOC temperature sensitivity. However, which mechanism predominantly controls SOC temperature sensitivity depends on the age of the buried terrace soils.
Heleen Deroo, Masuda Akter, Samuel Bodé, Orly Mendoza, Haichao Li, Pascal Boeckx, and Steven Sleutel
Biogeosciences, 18, 5035–5051, https://doi.org/10.5194/bg-18-5035-2021, https://doi.org/10.5194/bg-18-5035-2021, 2021
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We assessed if and how incorporation of exogenous organic carbon (OC) such as straw could affect decomposition of native soil organic carbon (SOC) under different irrigation regimes. Addition of exogenous OC promoted dissolution of native SOC, partly because of increased Fe reduction, leading to more net release of Fe-bound SOC. Yet, there was no proportionate priming of SOC-derived DOC mineralisation. Water-saving irrigation can retard both priming of SOC dissolution and mineralisation.
Frances A. Podrebarac, Sharon A. Billings, Kate A. Edwards, Jérôme Laganière, Matthew J. Norwood, and Susan E. Ziegler
Biogeosciences, 18, 4755–4772, https://doi.org/10.5194/bg-18-4755-2021, https://doi.org/10.5194/bg-18-4755-2021, 2021
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Soil respiration is a large and temperature-responsive flux in the global carbon cycle. We found increases in microbial use of easy to degrade substrates enhanced the temperature response of respiration in soils layered as they are in situ. This enhanced response is consistent with soil composition differences in warm relative to cold climate forests. These results highlight the importance of the intact nature of soils rarely studied in regulating responses of CO2 fluxes to changing temperature.
Elisa Bruni, Bertrand Guenet, Yuanyuan Huang, Hugues Clivot, Iñigo Virto, Roberta Farina, Thomas Kätterer, Philippe Ciais, Manuel Martin, and Claire Chenu
Biogeosciences, 18, 3981–4004, https://doi.org/10.5194/bg-18-3981-2021, https://doi.org/10.5194/bg-18-3981-2021, 2021
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Increasing soil organic carbon (SOC) stocks is beneficial for climate change mitigation and food security. One way to enhance SOC stocks is to increase carbon input to the soil. We estimate the amount of carbon input required to reach a 4 % annual increase in SOC stocks in 14 long-term agricultural experiments around Europe. We found that annual carbon input should increase by 43 % under current temperature conditions, by 54 % for a 1 °C warming scenario and by 120 % for a 5 °C warming scenario.
Rainer Brumme, Bernd Ahrends, Joachim Block, Christoph Schulz, Henning Meesenburg, Uwe Klinck, Markus Wagner, and Partap K. Khanna
Biogeosciences, 18, 3763–3779, https://doi.org/10.5194/bg-18-3763-2021, https://doi.org/10.5194/bg-18-3763-2021, 2021
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In order to study the fate of litter nitrogen in forest soils, we combined a leaf litterfall exchange experiment using 15N-labeled leaf litter with long-term element budgets at seven European beech sites in Germany. It appears that fructification intensity, which has increased in recent decades, has a distinct impact on N retention in forest soils. Despite reduced nitrogen deposition, about 6 and 10 kg ha−1 of nitrogen were retained annually in the soils and in the forest stands, respectively.
Lorenz Gfeller, Andrea Weber, Isabelle Worms, Vera I. Slaveykova, and Adrien Mestrot
Biogeosciences, 18, 3445–3465, https://doi.org/10.5194/bg-18-3445-2021, https://doi.org/10.5194/bg-18-3445-2021, 2021
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Our incubation experiment shows that flooding of polluted floodplain soils may induce pulses of both mercury (Hg) and methylmercury to the soil solution and threaten downstream ecosystems. We demonstrate that mobilization of Hg bound to manganese oxides is a relevant process in organic-matter-poor soils. Addition of organic amendments accelerates this mobilization but also facilitates the formation of nanoparticulate Hg and the subsequent fixation of Hg from soil solution to the soil.
Yao Zhang, Jocelyn M. Lavallee, Andy D. Robertson, Rebecca Even, Stephen M. Ogle, Keith Paustian, and M. Francesca Cotrufo
Biogeosciences, 18, 3147–3171, https://doi.org/10.5194/bg-18-3147-2021, https://doi.org/10.5194/bg-18-3147-2021, 2021
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Soil organic matter (SOM) is essential for the health of soils, and the accumulation of SOM helps removal of CO2 from the atmosphere. Here we present the result of the continued development of a mathematical model that simulates SOM and its measurable fractions. In this study, we simulated several grassland sites in the US, and the model generally captured the carbon and nitrogen amounts in SOM and their distribution between the measurable fractions throughout the entire soil profile.
Zhongkui Luo, Raphael A. Viscarra-Rossel, and Tian Qian
Biogeosciences, 18, 2063–2073, https://doi.org/10.5194/bg-18-2063-2021, https://doi.org/10.5194/bg-18-2063-2021, 2021
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Using the data from 141 584 whole-soil profiles across the globe, we disentangled the relative importance of biotic, climatic and edaphic variables in controlling global SOC stocks. The results suggested that soil properties and climate contributed similarly to the explained global variance of SOC in four sequential soil layers down to 2 m. However, the most important individual controls are consistently soil-related, challenging current climate-driven framework of SOC dynamics.
Debjani Sihi, Xiaofeng Xu, Mónica Salazar Ortiz, Christine S. O'Connell, Whendee L. Silver, Carla López-Lloreda, Julia M. Brenner, Ryan K. Quinn, Jana R. Phillips, Brent D. Newman, and Melanie A. Mayes
Biogeosciences, 18, 1769–1786, https://doi.org/10.5194/bg-18-1769-2021, https://doi.org/10.5194/bg-18-1769-2021, 2021
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Humid tropical soils are important sources and sinks of methane. We used model simulation to understand how different kinds of microbes and observed soil moisture and oxygen dynamics contribute to production and consumption of methane along a wet tropical hillslope during normal and drought conditions. Drought alters the diffusion of oxygen and microbial substrates into and out of soil microsites, resulting in enhanced methane release from the entire hillslope during drought recovery.
Mathieu Chassé, Suzanne Lutfalla, Lauric Cécillon, François Baudin, Samuel Abiven, Claire Chenu, and Pierre Barré
Biogeosciences, 18, 1703–1718, https://doi.org/10.5194/bg-18-1703-2021, https://doi.org/10.5194/bg-18-1703-2021, 2021
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Evolution of organic carbon content in soils could be a major driver of atmospheric greenhouse gas concentrations over the next century. Understanding factors controlling carbon persistence in soil is a challenge. Our study of unique long-term bare-fallow samples, depleted in labile organic carbon, helps improve the separation, evaluation and characterization of carbon pools with distinct residence time in soils and gives insight into the mechanisms explaining soil organic carbon persistence.
Melisa A. Diaz, Christopher B. Gardner, Susan A. Welch, W. Andrew Jackson, Byron J. Adams, Diana H. Wall, Ian D. Hogg, Noah Fierer, and W. Berry Lyons
Biogeosciences, 18, 1629–1644, https://doi.org/10.5194/bg-18-1629-2021, https://doi.org/10.5194/bg-18-1629-2021, 2021
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Water-soluble salt and nutrient concentrations of soils collected along the Shackleton Glacier, Antarctica, show distinct geochemical gradients related to latitude, longitude, elevation, soil moisture, and distance from coast and glacier. Machine learning algorithms were used to estimate geochemical gradients for the region given the relationship with geography. Geography and surface exposure age drive salt and nutrient abundances, influencing invertebrate habitat suitability and biogeography.
Marion Schrumpf, Klaus Kaiser, Allegra Mayer, Günter Hempel, and Susan Trumbore
Biogeosciences, 18, 1241–1257, https://doi.org/10.5194/bg-18-1241-2021, https://doi.org/10.5194/bg-18-1241-2021, 2021
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A large amount of organic carbon (OC) in soil is protected against decay by bonding to minerals. We studied the release of mineral-bonded OC by NaF–NaOH extraction and H2O2 oxidation. Unexpectedly, extraction and oxidation removed mineral-bonded OC at roughly constant portions and of similar age distributions, irrespective of mineral composition, land use, and soil depth. The results suggest uniform modes of interactions between OC and minerals across soils in quasi-steady state with inputs.
Lena Rohe, Bernd Apelt, Hans-Jörg Vogel, Reinhard Well, Gi-Mick Wu, and Steffen Schlüter
Biogeosciences, 18, 1185–1201, https://doi.org/10.5194/bg-18-1185-2021, https://doi.org/10.5194/bg-18-1185-2021, 2021
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Total denitrification, i.e. N2O and (N2O + N2) fluxes, of repacked soil cores were analysed for different combinations of soils and water contents. Prediction accuracy of (N2O + N2) fluxes was highest with combined proxies for oxygen demand (CO2 flux) and oxygen supply (anaerobic soil volume fraction). Knowledge of denitrification completeness (product ratio) improved N2O predictions. Substitutions with cheaper proxies (soil organic matter, empirical diffusivity) reduced prediction accuracy.
Severin-Luca Bellè, Asmeret Asefaw Berhe, Frank Hagedorn, Cristina Santin, Marcus Schiedung, Ilja van Meerveld, and Samuel Abiven
Biogeosciences, 18, 1105–1126, https://doi.org/10.5194/bg-18-1105-2021, https://doi.org/10.5194/bg-18-1105-2021, 2021
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Controls of pyrogenic carbon (PyC) redistribution under rainfall are largely unknown. However, PyC mobility can be substantial after initial rain in post-fire landscapes. We conducted a controlled simulation experiment on plots where PyC was applied on the soil surface. We identified redistribution of PyC by runoff and splash and vertical movement in the soil depending on soil texture and PyC characteristics (material and size). PyC also induced changes in exports of native soil organic carbon.
Michael Rinderer, Jaane Krüger, Friederike Lang, Heike Puhlmann, and Markus Weiler
Biogeosciences, 18, 1009–1027, https://doi.org/10.5194/bg-18-1009-2021, https://doi.org/10.5194/bg-18-1009-2021, 2021
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We quantified the lateral and vertical subsurface flow (SSF) and P concentrations of three beech forest plots with contrasting soil properties during sprinkling experiments. Vertical SSF was 2 orders of magnitude larger than lateral SSF, and both consisted mainly of pre-event water. P concentrations in SSF were high during the first 1 to 2 h (nutrient flushing) but nearly constant thereafter. This suggests that P in the soil solution was replenished fast by mineral or organic sources.
Kirsty C. Paterson, Joanna M. Cloy, Robert M. Rees, Elizabeth M. Baggs, Hugh Martineau, Dario Fornara, Andrew J. Macdonald, and Sarah Buckingham
Biogeosciences, 18, 605–620, https://doi.org/10.5194/bg-18-605-2021, https://doi.org/10.5194/bg-18-605-2021, 2021
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Soil organic carbon sequestration across agroecosystems worldwide can contribute to mitigating the effects of climate change by reducing levels of atmospheric carbon dioxide. The maximum carbon sequestration potential is frequently estimated using the linear regression equation developed by Hassink (1997). This work examines the suitability of this equation for use in grasslands across the United Kingdom. The results highlight the need to ensure the fit of equations to the soils being studied.
Hannah Gies, Frank Hagedorn, Maarten Lupker, Daniel Montluçon, Negar Haghipour, Tessa Sophia van der Voort, and Timothy Ian Eglinton
Biogeosciences, 18, 189–205, https://doi.org/10.5194/bg-18-189-2021, https://doi.org/10.5194/bg-18-189-2021, 2021
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Understanding controls on the persistence of organic matter in soils is essential to constrain its role in the carbon cycle. Emerging concepts suggest that the soil carbon pool is predominantly comprised of stabilized microbial residues. To test this hypothesis we isolated microbial membrane lipids from two Swiss soil profiles and measured their radiocarbon age. We find that the ages of these compounds are in the range of millenia and thus provide evidence for stabilized microbial mass in soils.
Frederick Büks, Gilles Kayser, Antonia Zieger, Friederike Lang, and Martin Kaupenjohann
Biogeosciences, 18, 159–167, https://doi.org/10.5194/bg-18-159-2021, https://doi.org/10.5194/bg-18-159-2021, 2021
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Ultrasonication/density fractionation is a common method used to extract particulate organic matter (POM) and, recently, microplastic (MP) from soil samples. In this study, ultrasonic treatment with mechanical stress increasing from 0 to 500 J mL−1 caused comminution and a reduced recovery rate of soil-derived POMs but no such effects with MP particles. In consequence, the extraction of MP from soils is not affected by particle size and recovery rate artifacts.
Hang Wen, Pamela L. Sullivan, Gwendolyn L. Macpherson, Sharon A. Billings, and Li Li
Biogeosciences, 18, 55–75, https://doi.org/10.5194/bg-18-55-2021, https://doi.org/10.5194/bg-18-55-2021, 2021
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Carbonate weathering is essential in regulating carbon cycle at the century timescale. Plant roots accelerate weathering by elevating soil CO2 via respiration. It however remains poorly understood how and how much rooting characteristics modify flow paths and weathering. This work indicates that deepening roots in woodlands can enhance carbonate weathering by promoting recharge and CO2–carbonate contact in the deep, carbonate-abundant subsurface.
Marcus Schiedung, Severin-Luca Bellè, Gabriel Sigmund, Karsten Kalbitz, and Samuel Abiven
Biogeosciences, 17, 6457–6474, https://doi.org/10.5194/bg-17-6457-2020, https://doi.org/10.5194/bg-17-6457-2020, 2020
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The mobility of pyrogenic organic matter (PyOM) in soils is largely unknow, while it is a major and persistent component of the soil organic matter. With a soil column experiment, we identified that only a small proportion of PyOM can migrate through the soil, but its export is continuous. Aging and associated oxidation increase its mobility but also its retention in soils. Further, PyOM can alter the vertical mobility of native soil organic carbon during its downward migration.
Patrick Wordell-Dietrich, Anja Wotte, Janet Rethemeyer, Jörg Bachmann, Mirjam Helfrich, Kristina Kirfel, Christoph Leuschner, and Axel Don
Biogeosciences, 17, 6341–6356, https://doi.org/10.5194/bg-17-6341-2020, https://doi.org/10.5194/bg-17-6341-2020, 2020
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The release of CO2 from soils, known as soil respiration, plays a major role in the global carbon cycle. However, the contributions of different soil depths or the sources of soil CO2 have hardly been studied. We quantified the CO2 production for different soil layers (up to 1.5 m) in three soil profiles for 2 years. We found that 90 % of CO2 production occurs in the first 30 cm of the soil profile, and that the CO2 originated from young carbon sources, as revealed by radiocarbon measurements.
Cited articles
Berg, B., Johansson, M. B., Nilsson, Å., Gundersen, P., and Norell, L.:
Sequestration of carbon in the humus layer of Swedish forests – direct
measurements, Can. J. Forest Res., 39, 962–975, https://doi.org/10.1139/X09-022, 2009.
Bond-Lamberty, B., Bailey, V. L., Chen, M., Gough, C. M., and Vargas, R.:
Globally rising soil heterotrophic respiration over recent decades, Nature,
560, 80–83, https://doi.org/10.1038/s41586-018-0358-x, 2018.
Canadell, J. G. and Schulze, E. D.: Global potential of biospheric carbon
management for climate mitigation, Nat. Commun., 5, 1–12, https://doi.org/10.1038/ncomms6282, 2014.
Chapman, S. J., Bell, J. S., Campbell, C. D., Hudson, G., Lilly, A., Nolan,
A. J., Robertson, A. H. J., Potts, J. M., and Towers, W.: Comparison of soil
carbon stocks in Scottish soils between 1978 and 2009, Eur. J. Soil Sci.,
64, 455–465, https://doi.org/10.1111/ejss.12041, 2013.
Chen, L., Smith, P., and Yang, Y.: How has soil carbon stock changed over
recent decades?, Glob. Change Biol., 21, 3197–3199, https://doi.org/10.1111/gcb.12992, 2015.
Cox, P. M., Betts, R. A., Jones, C. D., Spall, S. A., and Totterdell, I. J.:
Acceleration of global warming due to carbon-cycle feedbacks in a coupled
climate model, Nature, 408, 184–187, https://doi.org/10.1038/35041539, 2000.
Davidson, E. A. and Janssens, I. A.: Temperature sensitivity of soil carbon
decomposition and feedbacks to climate change, Nature, 440, 165–173,
https://doi.org/10.1038/nature04514, 2006.
Dölle, M. and Schmidt, W.: Impact of tree species on nutrient and light
availability: evidence from a permanent plot study of old-field succession,
Plant Ecol., 203, 273–287, https://doi.org/10.1007/s11258-008-9547-2, 2009.
Evans, A. M., Perschel, R. T., and Kittler, B. A.: Overview of forest
biomass harvesting guidelines, J. Sustain. Forest., 32, 89–107, https://doi.org/10.1080/10549811.2011.651786, 2013,.
Fang, J., Shen, Z., Tang, Z., Wang, X., Wang, Z., Feng, J., Liu, Y., Qiao,
X., Wu, X., and Zheng, C.: Forest community survey and the structural
characteristics of forests in China, Ecography, 35, 1059–1071, https://doi.org/10.1111/j.1600-0587.2013.00161.x, 2012.
Fang, J., Guo, Z., Hu, H., Kato, T., Muraoka, H., and Son, Y.: Forest
biomass carbon sinks in East Asia, with special reference to the relative
contributions of forest expansion and forest growth, Glob. Change Biol., 20,
2019–2030, https://doi.org/10.1111/gcb.12512, 2014.
Fang, J., Yu, G., Liu, L., Hu, S., and Chapin III, F. S.: Climate change,
human impacts, and carbon sequestration in China, P. Natl. Acad. Sci. USA,
115, 4015–4020, https://doi.org/10.1073/pnas.1700304115, 2018.
Fang, J. Y., Liu, G. H., Zhu, B., Wang, X. K., and Liu, S. B.: Carbon
budgets of three temperate forest ecosystems in Dongling Mt., Beijing,
China, Sci. China Earth Sci., 50, 92–101, https://doi.org/10.1007/s11430-007-2031-3, 2007.
Feng, Y., Zhu, J., Zhao, X., Tang, Z., Zhu, J., and Fang, J.: Changes in the
trends of vegetation net primary productivity in China between 1982 and
2015, Environ. Res. Lett., 14, 124009, https://doi.org/10.1088/1748-9326/ab4cd8, 2019.
Grüneberg, E., Ziche, D., and Wellbrock, N.: Organic carbon stocks and
sequestration rates of forest soils in Germany, Glob. Change Biol., 20,
2644–2662, https://doi.org/10.1111/gcb.12558, 2014.
Guo, Z. D., Hu, H. F., Li, P., Li, N. Y., and Fang, J. Y.: Spatio-temporal
changes in biomass carbon sinks in China's forests from 1977 to 2008, Sci.
China Life Sci., 56, 661–671, https://doi.org/10.1007/s11427-013-4492-2, 2013.
Häkkinen, M., Heikkinen, J., and Mäkipää, R.: Soil carbon
stock increases in the organic layer of boreal middle-aged stands,
Biogeosciences, 8, 1279–1289, https://doi.org/10.5194/bg-8-1279-2011, 2011.
He, Y., Trumbore, S. E., Torn, M. S., Harden, J. W., Vaughn, L. J., Allison,
S. D., and Randerson, J. T.: Radiocarbon constraints imply reduced carbon
uptake by soils during the 21st century, Science, 353, 1419–1424,
https://doi.org/10.1126/science.aad4273, 2016.
IPCC: Summary for policymakers, in: Climate Change 2013: The Physical Science Basis, edited by: Stocker, T. F., Qin, D., Plattner, G. K.,
Tignor, M., Allen, S. K., Boschung, J., Nauels, Xia, Y., Bex, V.,
and Midgley, P. M., Contribution
of Working Group I to the Fifth Assessment, Report of the Intergovernmental
Panel on Climate Change, Cambridge, CUP, 1–30, 2013.
Kiser, L. C., Kelly, J. M., and Mays, P. A.: Changes in forest soil carbon
and nitrogen after a thirty-year interval, Soil Sci. Soc. Am. J., 73,
647–653, https://doi.org/10.2136/sssaj2008.0102, 2009.
Lal, R.: Soil carbon sequestration impacts on global climate change and food
security, Science, 304, 1623–1627, https://doi.org/10.1126/science.1097396, 2004.
Leith, H. and Whittaker, R. H.: Primary productivity of the biosphere:
ecological studies, Berlin, Springer, 237–263, https://doi.org/10.1007/978-3-642-80913-2, 1975.
Lettens, S., Van Orshoven, J., van Wesemael, B., De Vosc, B., and Muysa, B.:
Stocks and fluxes of soil organic carbon for landscape units in Belgium
derived from heterogeneous data sets for 1990 and 2000, Geoderma, 127,
11–23, https://doi.org/10.1016/j.geoderma.2004.11.001, 2005.
Luo, Y., Melillo, J., Niu, S., Beier, C., Clark, J. S., Classen, A. T.,
Davidson, E., Dukes, J. S., Evans, R. D., Field, C. B., Czimczik, C. I.,
Keller, M., Kimball, B. A., Kueppers, L. M., Norby, R. J., Pelini, S. L.,
Pendall, E., Rastetter, E., Six, J., Smith, M., Tjoelker, M. G., and Torn,
M. S.: Coordinated approaches to quantify long-term ecosystem dynamics in
response to global change, Glob. Change Biol., 17, 843–854, https://doi.org/10.1111/j.1365-2486.2010.02265.x, 2011.
Majdi, H.: Changes in fine root production and longevity in relation to
water and nutrient availability in a Norway spruce stand in northern Sweden,
Tree Physiol., 21, 1057–1061, https://doi.org/10.1023/A:1011905124393, 2001.
Nadelhoffer, K. J. and Raich, J. W.: Fine root production estimates and
belowground carbon allocation in forest ecosystems, Ecology, 73, 1139–1147,
https://doi.org/10.2307/1940664, 1992.
Nelson, D. W. and Sommers, L. E.: Total carbon, organic carbon, and organic
matter, chap. 29, in: Methods of Soil Analysis, Part 2. Chemical and
Microbiological Properties, 2nd Edn., edited by: Sparks, A. L., American Society of
Agronomy, Inc, Soil Science Society of Agronomy, Inc., 539–579, https://doi.org/10.2136/sssabookser5.3.c34, 1982.
Nielsen, O. K., Mikkelsen, M. H., Hoff mann, L., Gyldenkærne, S.,
Winther, M., Nielsen, M., Fauser, P., Thomsen, M., Plejdrup, M. S.,
Albrektsen, R., Hjelgaard, K., Bruun, H. G., Johannsen, V. K., Nord-Larsen,
T., Bastrup-Birk, A., Vesterdal, L., Møller, I. S., Rasmussen, E.,
Arfaoui, K., Baunbæk, L., and Hansen, M. G.: Denmark's National
Inventory Report 2012, Emission Inventories 1990–2010 – Submitted under the
United Nations Framework Convention on Climate Change and the Kyoto
Protocol. Scientific Report from DCE–Danish Centre for Environment and
Energy, 19, http://www.risoe.dtu.dk/rispubl/NEI/NEI-DK-5700.pdf (last access: 3 August 2012);
OSTI as DE01047219, 2012.
Norby, R. J. and Zak, D. R.: Ecological lessons from Free-Air CO2
Enrichment (FACE) experiments, Annu. Rev. Ecol. Evol. S., 42, 181–203,
https://doi.org/10.1146/annurev-ecolsys-102209-144647, 2011.
Norby, R. J., Warren, J. M., Iversen, C. M., Medlyn, B. E., and McMurtrie,
R. E.: CO2 enhancement of forest productivity constrained by limited
nitrogen availability, P. Natl. Acad. Sci. USA, 107, 19368–19373,
https://doi.org/10.1073/pnas.1006463107, 2010.
Ortiz, C. A., Liski, J., Gärdenäs, A. I., Lehtonen, A., Lundblad,
M., Stendahl, J., Ågren, G. I., and Karltun, E.: Soil organic carbon stock
changes in Swedish forest soils – a comparison of uncertainties and their
sources through a national inventory and two simulation models, Ecol.
Model., 251, 221–231, https://doi.org/10.1016/j.ecolmodel.2012.12.017, 2013.
Pan, Y., Birdsey, R. A., Fang, J. Houghton, R., Kauppi, P. E., Kurz, W. A.,
Phillips, O. L., Shvidenko, A., Lewis, S. L., Canadell, J. G., Ciais, P.,
Jackson, R. B., Pacala, S. W., McGuire, A. D., Piao, S., Rautiainen, A.,
Sitch, S., and Hayes, D.: A large and persistent carbon sink in the world's
forests, Science, 333, 988–993, https://doi.org/10.1126/science.1201609, 2011.
Pausch, J. and Kuzyakov, Y.: Carbon input by roots into the soil:
quantification of rhizodeposition from root to ecosystem scale, Glob. Change
Biol., 24, 1–12, https://doi.org/10.1111/gcb.13850, 2018.
Piao, S., Fang, J., Ciais, P., Peylin, P., Huang, Y., Sitch, S., and Wang,
T.: The carbon balance of terrestrial ecosystems in China, Nature, 458,
1009, https://doi.org/10.1038/nature07944, 2009.
Prietzel, J., Stetter, U., Klemmt, H. J., and Rehfuess, K. E.: Recent carbon
and nitrogen accumulation and acidification in soils of two Scots pine
ecosystems in Southern Germany, Plant Soil, 289, 153–170, https://doi.org/10.1007/s11104-006-9120-5, 2006.
Prietzel, J., Zimmermann, L., Schubert, A., and Christophel, D.: Organic
matter losses in German Alps forest soils since the 1970s most likely caused
by warming, Nat. Geosci., 9, 543–548, https://doi.org/10.1038/ngeo2732, 2016.
Rantakari, M., Lehtonen, A., Linkosalo, T., Tuomi, M., Tamminen, P.,
Heikkinen, J., Liski, J., Mäkipää, R., Ilvesniemi, H.,
and Sievänen, R.: The Yasso07 soil carbon model – Testing against repeated
soil carbon inventory, Forest Ecol. Manag., 286, 137–147, https://doi.org/10.1016/j.foreco.2012.08.041, 2012.
Rasse, D. P., Rumpel, C., and Dignac, M. F.: Is soil carbon mostly root
carbon? Mechanisms for a specific stabilisation, Plant Soil, 269, 341–356,
https://doi.org/10.1007/s11104-004-0907-y, 2005.
Schrumpf, M., Schulze, E. D., Kaiser, K., and Schumacher, J.: How accurately
can soil organic carbon stocks and stock changes be quantified by soil
inventories?, Biogeosciences, 8, 1193–1212, https://doi.org/10.5194/bg-8-1193-2011, 2011.
Schrumpf, M., Kaiser, K., and Schulze, E. D.: Soil organic carbon and total
nitrogen gains in an old growth deciduous forest in Germany, PLoS ONE, 9,
e89364, https://doi.org/10.1371/journal.pone.0089364, 2014.
Sitch, S., Friedlingstein, P., Gruber, N., Jones, S. D., Murray-Tortarolo, G., Ahlström, A., Doney, S. C., Graven, H., Heinze, C., Huntingford, C., Levis, S., Levy, P. E., Lomas, M., Poulter, B., Viovy, N., Zaehle, S., Zeng, N., Arneth, A., Bonan, G., Bopp, L., Canadell, J. G., Chevallier, F., Ciais, P., Ellis, R., Gloor, M., Peylin, P., Piao, S. L., Le Quéré, C., Smith, B., Zhu, Z., and Myneni, R.: Recent trends and drivers of regional sources and sinks of carbon dioxide, Biogeosciences, 12, 653–679, https://doi.org/10.5194/bg-12-653-2015, 2015.
Smith, P.: How long before a change in soil organic carbon can be detected?,
Glob. Change Biol., 10, 1878–1883, https://doi.org/10.1111/j.1365-2486.2004.00854.x, 2004.
Tang, G. and Li, K.: Tree species controls on soil carbon sequestration and
carbon stability following 20 years of afforestation in a valley-type
savanna, Forest Ecol. Manag., 291, 13–19, https://doi.org/10.1016/j.foreco.2012.12.001, 2013.
Tang, X., Zhao, X., Bai, Y., Tang, Z., Wang, W., Zhao, Y., Wan, H., Xie, Z.,
Shi, X., Wu, B., Wang, G., Yan, J., Ma, K., Du, S., Li, S., Han, S., Ma, Y.,
Hu, H., He, N., Yang, Y., Han, W., He, H., Yu, G., Fang, J., and Zhou, G.:
Carbon pools in China's terrestrial ecosystems: New estimates based on an
intensive field survey, P. Natl. Acad. Sci. USA, 115, 4021–4026, https://doi.org/10.1073/pnas.1700291115, 2018.
Tefs, C. and Gleixner, G.: Importance of root derived carbon for soil
organic matter storage in a temperate old-growth beech forest – Evidence
from C, N and 14C content, Forest Ecol. Manag., 263, 131–137, https://doi.org/10.1016/j.foreco.2011.09.010, 2012.
Todd-Brown, K. E., Randerson, J. T., Post, W. M., Hoffman, F. M., Tarnocai,
C., Schuur, E. A. G., and Allison, S. D.: Causes of variation in soil carbon
simulations from CMIP5 Earth system models and comparison with observations,
Biogeosciences, 10, 1717–1736, https://doi.org/10.5194/bg-10-1717-2013, 2013.
Wang, C., Gower, S. T., Wang, Y., Zhao, H., Yan, P., and Bond-Lamberty, B.
P.: The influence of fire on carbon distribution and net primary production
of boreal Larix gmelinii forests in north-eastern China, Glob. Change Biol., 7, 719–730,
https://doi.org/10.1046/j.1354-1013.2001.00441.x, 2001.
Wang, W., Qiu, L., Zu, Y., Su, D., An, J., Wang, H., Zheng, G., Sun, W., and
Chen, X.: Changes in soil organic carbon, nitrogen, pH and bulk density with
the development of larch (Larix gmelinii) plantations in China, Glob. Change Biol., 17,
2657–2676, https://doi.org/10.1111/j.1365-2486.2011.02447.x,
2011.
Wang, X., Ciais, P., Wang, Y., and Zhu, D.: Divergent response of seasonally
dry tropical vegetation to climatic variations in dry and wet seasons, Glob.
Change Biol., 24, 4709–4717, https://doi.org/10.1111/gcb.14335, 2018.
Yang, Y., Li, P., Ding, J., Zhao, X., Ma, W., Ji, C., and Fang, J.:
Increased topsoil carbon stock across China's forests, Glob. Change Biol.,
20, 2687–2696, https://doi.org/10.1111/gcb.12536, 2014.
Zhao, X., Yang, Y., Shen, H., Geng, X., and Fang, J.: Global
soil–climate–biome diagram: linking surface soil properties to climate and
biota, Biogeosciences, 16, 2857–2871, https://doi.org/10.5194/bg-16-2857-2019, 2019.
Zheng, T. L., Zhu, J. L., Wang, S. P., and Fang, J. Y.: When will China
achieve its carbon emission peak?, Natl. Sci. Rev., 3, 8–15, https://doi.org/10.1093/nsr/nwv079, 2016.
Zhou, G., Liu, S., Li, Z., Zhang, D., Tang, X., Zhou, C., Yan, J., and Mo, J.:
Old-growth forests can accumulate carbon in soils, Science, 314, 1417,
https://doi.org/10.1126/science.1130168, 2006.
Zhou, Z., Jiang, L., Du, E., Hu, H., Li, Y., Chen, D., and Fang, J.:
Temperature and substrate availability regulate soil respiration in the
tropical mountain rainforests, Hainan Island, China. J. Plant Ecol., 6,
325–334, https://doi.org/10.1093/jpe/rtt034, 2013.
Zhu, J., Hu, H., Tao, S., Chi, X., Li, P., Jiang, L., Ji, C., Zhu, J., Tang,
Z., Pan, Y., Birdsey, R. A., He, X., and Fang, J.: Carbon stocks and changes
of dead organic matter in China's forests, Nat. Comm., 8, 1–10, https://doi.org/10.1038/s41467-017-00207-1, 2017.
Zhu, J. X., Hu, X. Y., Yao, H., Liu, G. H., Ji, C. J., and Fang, J. Y.: A
significant carbon sink in temperate forests in Beijing: based on 20-year
field measurements in three stands, Sci. China Life Sci., 58, 1135–1141,
https://doi.org/10.1007/s11427-015-4935-z, 2015.
Short summary
Soil is the largest carbon pool in forests. Whether forest soils function as a sink or source of atmospheric carbon remains controversial. Here, we investigated the 20-year changes in the soil organic carbon pool at eight permanent forest plots in China. Our results revealed that the soils sequestered 3.6–16.3 % of the annual net primary production across the investigated sites, demonstrating that these forest soils have functioned as an important C sink during the past 2 decades.
Soil is the largest carbon pool in forests. Whether forest soils function as a sink or source of...
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