气候变化领域集成服务门户(CCPortal): Soil carbon storage capacity of drylands under altered fire regimes

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DOI	10.1038/s41558-023-01800-7
	Soil carbon storage capacity of drylands under altered fire regimes
	Pellegrini, Adam F. A.; Reich, Peter B.; Hobbie, Sarah E.; Coetsee, Corli; Wigley, Benjamin; February, Edmund; Georgiou, Katerina; Terrer, Cesar; Brookshire, E. N. J.; Ahlstrom, Anders; Nieradzik, Lars; Sitch, Stephen; Melton, Joe R.; Forrest, Matthew; Li, Fang; Hantson, Stijn; Burton, Chantelle; Yue, Chao; Ciais, Philippe; Jackson, Robert B.
发表日期	2023
ISSN	1758-678X
EISSN	1758-6798
卷号	13 期号:10
英文摘要	The determinants of fire-driven changes in soil organic carbon (SOC) across broad environmental gradients remains unclear, especially in global drylands. Here we combined datasets and field sampling of fire-manipulation experiments to evaluate where and why fire changes SOC and compared our statistical model to simulations from ecosystem models. Drier ecosystems experienced larger relative changes in SOC than humid ecosystems-in some cases exceeding losses from plant biomass pools-primarily explained by high fire-driven declines in tree biomass inputs in dry ecosystems. Many ecosystem models underestimated the SOC changes in drier ecosystems. Upscaling our statistical model predicted that soils in savannah-grassland regions may have gained 0.64 PgC due to net-declines in burned area over the past approximately two decades. Consequently, ongoing declines in fire frequencies have probably created an extensive carbon sink in the soils of global drylands that may have been underestimated by ecosystem models. Fire impacts soil organic carbon stocks, in addition to aboveground biomass, yet changes are not well constrained. This study shows that more soil carbon is lost from drier ecosystems than humid ones and that the carbon sink is increasing in savannah-grassland regions with declining burned area.
英文关键词	ORGANIC-MATTER; NUTRIENT-AVAILABILITY; ECOSYSTEM CARBON; TEMPERATE SOILS; FREQUENT FIRE; PINE FOREST; TREE COVER; OAK FOREST; SAVANNA; NITROGEN
WOS研究方向	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001157223900008
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282540
作者单位	University of Cambridge; University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; University of Minnesota System; University of Minnesota Twin Cities; Western Sydney University; University of Minnesota System; University of Minnesota Twin Cities; Nelson Mandela University; University of Cape Town; United States Department of Energy (DOE); Lawrence Livermore National Laboratory; Massachusetts Institute of Technology (MIT); Montana State University System; Montana State University Bozeman; Lund University; University of Exeter; Environment & Climate Change Canada; Senckenberg Biodiversitat & Klima- Forschungszentrum (BiK-F); Senckenberg Gesellschaft fur Naturforschung (SGN); Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Universidad del Rosario; Met Office - UK; Hadley Centre; Northwest A&F University - China; Universite Paris Cite; Universite Paris Saclay; CEA; Centre National de la Recherche Scientifique (CNRS); Stanford University;...
推荐引用方式 GB/T 7714	Pellegrini, Adam F. A.,Reich, Peter B.,Hobbie, Sarah E.,et al. Soil carbon storage capacity of drylands under altered fire regimes[J],2023,13(10).
APA	Pellegrini, Adam F. A..,Reich, Peter B..,Hobbie, Sarah E..,Coetsee, Corli.,Wigley, Benjamin.,...&Jackson, Robert B..(2023).Soil carbon storage capacity of drylands under altered fire regimes.Nature Climate Change,13(10).
MLA	Pellegrini, Adam F. A.,et al."Soil carbon storage capacity of drylands under altered fire regimes".Nature Climate Change 13.10(2023).