Increasing aridity, temperature and soil pH induce soil C-N-P imbalance in grasslands

Scientific Reports
Feng JiaoZhiyou Yuan

Abstract

Due to the different degrees of controls exerted by biological and geochemical processes, climate changes are suggested to uncouple biogeochemical C, N and P cycles, influencing biomass accumulation, decomposition and storage in terrestrial ecosystems. However, the possible extent of such disruption in grassland ecosystems remains unclear, especially in China's steppes which have undergone rapid climate changes with increasing drought and warming predicted moving forward in these dryland ecosystems. Here, we assess how soil C-N-P stoichiometry is affected by climatic change along a 3500-km temperate climate transect in Inner Mongolia, China. Our results reveal that the soil from more arid and warmer sites are associated with lower soil organic C, total N and P. The ratios of both soil C:P and N:P decrease, but soil C:N increases with increasing aridity and temperature, indicating the predicted decreases in precipitation and warming for most of the temperate grassland region could lead to a soil C-N-P decoupling that may reduce plant growth and production in arid ecosystems. Soil pH, mainly reflecting long-term climate change in our sites, also contributes to the changing soil C-N-P stoichiometry, indicating the collective influ...Continue Reading

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Citations

Mar 21, 2017·Global Change Biology·Laurent AugustoBruno Ringeval
Feb 24, 2016·Scientific Reports·Z Y YuanRobert L Kallenbach
Aug 1, 2019·International Journal of Environmental Research and Public Health·Shiwei GongJixun Guo
Sep 15, 2018·Scientific Reports·César PlazaFernando T Maestre
Feb 28, 2017·Annual Review of Ecology, Evolution, and Systematics·Fernando T MaestreMiguel Berdugo
Nov 23, 2018·International Journal of Environmental Research and Public Health·Gang LiGuangchun Lei
Jul 12, 2017·World Journal of Microbiology & Biotechnology·Prem Lal KashyapSudheer Kumar
Aug 10, 2018·The Science of the Total Environment·Muke HuangYi Huang
Jun 26, 2021·Nature Ecology & Evolution·Haozhi MaConstantin M Zohner
Sep 25, 2021·Journal of Environmental Quality·Theivanayagam MaharajanSavarimuthu Ignacimuthu

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Software Mentioned

WorldClim
MASS
R package ‘ raster

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