Biogeosciences
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Articles | Volume 13, issue 12
Articles | Volume 13, issue 12
https://doi.org/10.5194/bg-13-3635-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-3635-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 12
Research article
 | 
22 Jun 2016
Research article |  | 22 Jun 2016

Carbon and nitrogen contents in particle–size fractions of topsoil along a 3000 km aridity gradient in grasslands of northern China

Xiao-Guang Wang, Seeta A. Sistla, Xiao-Bo Wang, Xiao-Tao Lü, and Xing-Guo Han

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Short summary
With a large-scale survey and sampling, results from this study provides strong evidence that increasing aridity would reduce the soil C and N storage in arid and semi-arid ecosystems due both to the changes of particle-sized fractions in soils (i.e. relatively more sand but less clay and silt in sites with higher aridity) and to the decline of C and N concentrations in each soil fraction.
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