气候变化领域集成服务门户(CCPortal): Soil carbon persistence governed by plant input and mineral protection at regional and global scales

CCPortal

DOI	10.1111/ele.13723
	Soil carbon persistence governed by plant input and mineral protection at regional and global scales
	Chen L.; Fang K.; Wei B.; Qin S.; Feng X.; Hu T.; Ji C.; Yang Y.
发表日期	2021
ISSN	1461023X
起始页码	1018
结束页码	1028
卷号	24 期号:5
英文摘要	Elucidating the processes underlying the persistence of soil organic matter (SOM) is a prerequisite for projecting soil carbon feedback to climate change. However, the potential role of plant carbon input in regulating the multi-layer SOM preservation over broad geographic scales remains unclear. Based on large-scale soil radiocarbon (∆14C) measurements on the Tibetan Plateau, we found that plant carbon input was the major contributor to topsoil carbon destabilisation despite the significant associations of topsoil ∆14C with climatic and mineral variables as well as SOM chemical composition. By contrast, mineral protection by iron–aluminium oxides and cations became more important in preserving SOM in deep soils. These regional observations were confirmed by a global synthesis derived from the International Soil Radiocarbon Database (ISRaD). Our findings illustrate different effects of plant carbon input on SOM persistence across soil layers, providing new insights for models to better predict multi-layer soil carbon dynamics under changing environments. © 2021 John Wiley & Sons Ltd.
关键词	Carbon cycle mineral-organic association plant–soil interaction radiocarbon soil carbon dynamics soil organic matter stabilisation
英文关键词	chemical composition; climate change; dietary mineral; persistence; radiocarbon dating; scale effect; soil carbon; soil organic matter; topsoil; China; Qinghai-Xizang Plateau; carbon; mineral; microbiology; plant; soil; Carbon; Minerals; Plants; Soil; Soil Microbiology
语种	英语
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/204353
作者单位	State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Institute of Ecology, College of Urban and Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Chen L.,Fang K.,Wei B.,et al. Soil carbon persistence governed by plant input and mineral protection at regional and global scales[J],2021,24(5).
APA	Chen L..,Fang K..,Wei B..,Qin S..,Feng X..,...&Yang Y..(2021).Soil carbon persistence governed by plant input and mineral protection at regional and global scales.Ecology Letters,24(5).
MLA	Chen L.,et al."Soil carbon persistence governed by plant input and mineral protection at regional and global scales".Ecology Letters 24.5(2021).