气候变化领域集成服务门户(CCPortal): Fire effects on the persistence of soil organic matter and long-term carbon storage

CCPortal

DOI	10.1038/s41561-021-00867-1
	Fire effects on the persistence of soil organic matter and long-term carbon storage
	Pellegrini A.F.A.; Harden J.; Georgiou K.; Hemes K.S.; Malhotra A.; Nolan C.J.; Jackson R.B.
发表日期	2022
ISSN	1752-0894
卷号	15 期号:1
英文摘要	One paradigm in biogeochemistry is that frequent disturbance tends to deplete carbon (C) in soil organic matter (SOM) by reducing biomass inputs and promoting losses. However, disturbance by fire has challenged this paradigm because soil C responses to frequent and/or intense fires are highly variable, despite observed declines in biomass inputs. Here, we review recent advances to illustrate that fire-driven changes in decomposition, mediated by altered SOM stability, are an important compensatory process offsetting declines in aboveground biomass pools. Fire alters the stability of SOM by affecting both the physicochemical properties of the SOM and the environmental drivers of decomposition, potentially offsetting C lost via combustion, but the mechanisms affecting the SOM stability differ across ecosystems. Thus, shifting our focus from a top-down view of fire impacting C cycling via changes in plant biomass to a bottom-up view of changes in decomposition may help to elucidate counterintuitive trends in the response of SOM to burning. Given that 70% of global topsoil C is in fire-prone regions, using fire to promote SOM stability may be an important nature-based climate solution to increase C storage. © 2021, Springer Nature Limited.
语种	英语
scopus关键词	aboveground biomass; biogeochemistry; carbon sequestration; carbon storage; decomposition; soil organic matter; topsoil
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250812
作者单位	Department of Plant Sciences, University of Cambridge, Cambridge, United Kingdom; Conservation Research Institute, University of Cambridge, Cambridge, United Kingdom; Department of Earth System Sciences, Stanford University, Stanford, CA, United States; Lawrence Livermore National Laboratory, Livermore, CA, United States; Woods Institute for the Environment, Stanford University, Stanford, CA, United States; Precourt Institute for Energy, Stanford University, Stanford, CA, United States
推荐引用方式 GB/T 7714	Pellegrini A.F.A.,Harden J.,Georgiou K.,et al. Fire effects on the persistence of soil organic matter and long-term carbon storage[J],2022,15(1).
APA	Pellegrini A.F.A..,Harden J..,Georgiou K..,Hemes K.S..,Malhotra A..,...&Jackson R.B..(2022).Fire effects on the persistence of soil organic matter and long-term carbon storage.Nature Geoscience,15(1).
MLA	Pellegrini A.F.A.,et al."Fire effects on the persistence of soil organic matter and long-term carbon storage".Nature Geoscience 15.1(2022).