气候变化领域集成服务门户(CCPortal): Degradation increases peat greenhouse gas emissions in undrained tropical peat swamp forests

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DOI	10.1007/s10533-023-01110-2
	Degradation increases peat greenhouse gas emissions in undrained tropical peat swamp forests
	Swails, Erin; Frolking, Steve; Deng, Jia; Hergoualch, Kristell
发表日期	2024
ISSN	0168-2563
EISSN	1573-515X
起始页码	167
结束页码	1
卷号	167 期号:1
英文摘要	Tropical peat swamp degradation can modify net peat greenhouse gas (GHG) emissions even without drainage. However, current Intergovernmental Panel on Climate Change (IPCC) guidelines do not provide default emission factors (EF) for anthropogenically-degraded undrained organic soils. We reviewed published field measurements of peat GHG fluxes in undrained undegraded and degraded peat swamp forests in Southeast Asia (SEA) and Latin America and the Caribbean (LAC). Degradation without drainage shifted the peat from a net CO2 sink to a source in both SEA (- 2.9 +/- 1.8 to 4.1 +/- 2.0 Mg CO2-C ha-1 yr-1) and LAC (- 4.3 +/- 1.8 to 1.4 +/- 2.2 Mg CO2-C ha-1 yr-1). It raised peat CH4 emissions (kg C ha-1 yr-1) in SEA (22.1 +/- 13.6 to 32.7 +/- 7.8) but decreased them in LAC (218.3 +/- 54.2 to 165.0 +/- 4.5). Degradation increased peat N2O emissions (kg N ha-1 yr-1) in SEA forests (0.9 +/- 0.5 to 4.8 +/- 2.3) (limited N2O data). It shifted peat from a net GHG sink to a source in SEA (- 7.9 +/- 6.9 to 20.7 +/- 7.4 Mg CO2-equivalent ha-1 yr-1) and increased peat GHG emissions in LAC (9.8 +/- 9.0 to 24.3 +/- 8.2 Mg CO2-equivalent ha-1 yr-1). The large observed increase in net peat GHG emissions in undrained degraded forests compared to undegraded conditions calls for their inclusion as a new class in the IPCC guidelines. As current default IPCC EF for tropical organic soils are based only on data collected in SEA ombrotrophic peatlands, expanded geographic representation and refinement of peat GHG EF by nutrient status are also needed.
英文关键词	Soil; Land-use change; Emission factor; Southeast Asia; Latin America and the Caribbean
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS记录号	WOS:001137345200001
来源期刊	BIOGEOCHEMISTRY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302445
作者单位	CGIAR; Center for International Forestry Research (CIFOR); University System Of New Hampshire; University of New Hampshire
推荐引用方式 GB/T 7714	Swails, Erin,Frolking, Steve,Deng, Jia,et al. Degradation increases peat greenhouse gas emissions in undrained tropical peat swamp forests[J],2024,167(1).
APA	Swails, Erin,Frolking, Steve,Deng, Jia,&Hergoualch, Kristell.(2024).Degradation increases peat greenhouse gas emissions in undrained tropical peat swamp forests.BIOGEOCHEMISTRY,167(1).
MLA	Swails, Erin,et al."Degradation increases peat greenhouse gas emissions in undrained tropical peat swamp forests".BIOGEOCHEMISTRY 167.1(2024).