DOI: 10.1111/ele.13723
论文题名: Soil carbon persistence governed by plant input and mineral protection at regional and global scales
作者: Chen L. ; Fang K. ; Wei B. ; Qin S. ; Feng X. ; Hu T. ; Ji C. ; Yang Y.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期: 5 起始页码: 1018
结束页码: 1028
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166794
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Chen L.,Fang K.,Wei B.,et al. Soil carbon persistence governed by plant input and mineral protection at regional and global scales[J]. Ecology Letters,2021-01-01,24(5)