Changing soil carbon: influencing factors, sequestration strategy and research direction

Carbon Balance and Management

Chunlei Sheng¹  Shangqi Xu¹  Chunjie Tian¹ 

[1] Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences;

关键词: Soil carbon;    Meta-analysis;    Climate change;    Human activities;    Land use change;    Agricultural management;   

DOI  :  10.1186/s13021-020-0137-5

来源: DOAJ

【 摘 要 】

Abstract Soil carbon (C) plays a critical role in the global C cycle and has a profound effect on climate change. To obtain an in-depth and comprehensive understanding of global soil C changes and better manage soil C, all meta-analysis results published during 2001–2019 relative to soil C were collected and synthesized. The effects of 33 influencing factors on soil C were analyzed, compared and classified into 5 grades according to their effects on soil C. The effects of different categories of influencing factors, including land use change (LUC), management and climate change, on soil C and the underlying mechanism were compared and discussed. We propose that natural ecosystems have the capacity to buffer soil C changes and that increasing C inputs is one of the best measures to sequester C. Furthermore, a comparison between the meta-analyses and previous studies related to soil C based on bibliometric analysis suggested that studies on wetland soil C, soil C budgets and the effects of pollution and pesticides on soil C should be strengthened in future research.

【 授权许可】

Unknown