气候变化领域集成服务门户(CCPortal): Net loss of biomass predicted for tropical biomes in a changing climate

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DOI	10.1038/s41558-023-01600-z
	Net loss of biomass predicted for tropical biomes in a changing climate
	Uribe, Maria del Rosario; Coe, Michael T.; Castanho, Andrea D. A.; Macedo, Marcia N.; Valle, Denis; Brando, Paulo M.
发表日期	2023
ISSN	1758-678X
EISSN	1758-6798
起始页码	274
结束页码	+
卷号	13 期号:3
英文摘要	Tropical ecosystems store over half of the world's aboveground live carbon as biomass, and water availability plays a key role in its distribution. Although precipitation and temperature are shifting across the tropics, their effect on biomass and carbon storage remains uncertain. Here we use empirical relationships between climate and aboveground biomass content to show that the contraction of humid regions, and expansion of those with intense dry periods, results in substantial carbon loss from the neotropics. Under a low emission scenario (Representative Concentration Pathway 4.5) this could cause a net reduction of aboveground live carbon of -14.4-23.9 PgC (6.8-12%) from 1950-2100. Under a high emissions scenario (Representative Concentration Pathway 8.5) net carbon losses could double across the tropics, to -28.2-39.7 PgC (13.3-20.1%). The contraction of humid regions in South America accounts for -40% of this change. Climate mitigation strategies could prevent half of the carbon losses and help maintain the natural tropical net carbon sink. Precipitation and temperature affect biomass and carbon storage in the tropics. This study shows that warming-driven contraction of humid regions and expansion of areas with dry periods could double carbon losses, with about one-third associated with decline of humid areas in South America.
英文关键词	CO2 FERTILIZATION; PRECIPITATION DECREASE; FOREST; CARBON; DEFORESTATION; SENSITIVITY; SAVANNA; AFRICAN; DIEBACK; DECLINE
WOS研究方向	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000926394000002
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/282488
作者单位	University of California System; University of California Irvine; Yale University; State University System of Florida; University of Florida
推荐引用方式 GB/T 7714	Uribe, Maria del Rosario,Coe, Michael T.,Castanho, Andrea D. A.,et al. Net loss of biomass predicted for tropical biomes in a changing climate[J],2023,13(3).
APA	Uribe, Maria del Rosario,Coe, Michael T.,Castanho, Andrea D. A.,Macedo, Marcia N.,Valle, Denis,&Brando, Paulo M..(2023).Net loss of biomass predicted for tropical biomes in a changing climate.Nature Climate Change,13(3).
MLA	Uribe, Maria del Rosario,et al."Net loss of biomass predicted for tropical biomes in a changing climate".Nature Climate Change 13.3(2023).