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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 12, issue 11
Biogeosciences, 12, 3499-3512, 2015
https://doi.org/10.5194/bg-12-3499-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 12, 3499-3512, 2015
https://doi.org/10.5194/bg-12-3499-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 09 Jun 2015

Research article | 09 Jun 2015

Disruption of metal ion homeostasis in soils is associated with nitrogen deposition-induced species loss in an Inner Mongolia steppe

Q.-Y. Tian et al.
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Cited articles  
Bai, Y., Wu, J., and Clark, C. M.: Tradeoffs and thresholds in the effects of nitrogen addition on biodiversity and ecosystem functioning: evidence from inner Mongolia Grasslands, Glob. Change Biol., 16, 358–372, 2010.
Bobbink, R., Hornung, M., and Roelofs, J. G. M.: The effects of air-borne nitrogen pollutants on species diversity in natural and semi-natural European vegetation, J. Ecol., 86, 717–738, 1998.
Bowman, W. D., Cleveland, C. C., Halada, Ĺ., Hreško, J., and Baron, J. S.: Negative impact of nitrogen deposition on soil buffering capacity, Nat. Geosci., 1, 767–770, 2008.
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Short summary
We demonstrate that N addition reduced species richness, acidified soil and disturbed nutrient homeostasis in soil in an Inner Mongolia steppe. We further reveal that an increase in inorganic-N concentration, depletion of base cations (Ca2+ and Mg2+) and mobilization of Mn2+ and Cu2+ in soils were involved in reduction in species richness in the temperate steppe of northern China, highlighting the involvement of nutrient mobilization in decline in species richness of alkaline grasslands.
We demonstrate that N addition reduced species richness, acidified soil and disturbed nutrient...
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