Unexpected no significant soil carbon losses in the Tibetan grasslands due to rodent bioturbation

The Tibetan grasslands store 2.5% of the Earth's soil organic carbon. Unsound management practices and climate change have resulted in widespread grassland degradation, providing open habitats for rodent activities. Rodent bioturbation loosens topsoil, reduces productivity, changes soil nutrien...

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Bibliographic Details
Published in:PNAS nexus 2023-03, Vol.2 (3), p.pgac314-pgac314
Main Authors: Huang, Miao, Gan, Dezhao, Li, Zheng, Wang, Jinsong, Niu, Shuli, Zuo, Hongchao, Long, Ruijun, Ma, Lei
Format: Article
Language:English
Subjects:
Analysis
Bioturbation
Carbon content
Environmental aspects
Global temperature changes
Grasslands
Physical Sciences and Engineering
Rodents
Soil structure
Soils
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Summary:The Tibetan grasslands store 2.5% of the Earth's soil organic carbon. Unsound management practices and climate change have resulted in widespread grassland degradation, providing open habitats for rodent activities. Rodent bioturbation loosens topsoil, reduces productivity, changes soil nutrient conditions, and consequently influences the soil organic carbon stocks of the Tibetan grasslands. However, these effects have not been quantified. Here, using meta-analysis and upscaling approaches, we found that rodent bioturbation impacts on the Tibetan grassland soil organic carbon contents were depth-dependent, with significant (  
ISSN:2752-6542
2752-6542
DOI:10.1093/pnasnexus/pgac314