气候变化领域集成服务门户(CCPortal): Tropical forests are a net carbon source based on aboveground measurements of gain and loss

CCPortal

DOI	10.1126/science.aam5962
	Tropical forests are a net carbon source based on aboveground measurements of gain and loss
	Baccini A.; Walker W.; Carvalho L.; Farina M.; Sulla-Menashe D.; Houghton R.A.
发表日期	2017
ISSN	0036-8075
起始页码	230
结束页码	234
卷号	358 期号:6360
英文摘要	The carbon balance of tropical ecosystems remains uncertain, with top-down atmospheric studies suggesting an overall sink and bottom-up ecological approaches indicating a modest net source. Here we use 12 years (2003 to 2014) of MODIS pantropical satellite data to quantify net annual changes in the aboveground carbon density of tropical woody live vegetation, providing direct, measurement-based evidence that the world’s tropical forests are a net carbon source of 425.2 ± 92.0 teragrams of carbon per year (Tg C year–1). This net release of carbon consists of losses of 861.7 ± 80.2 Tg C year–1 and gains of 436.5 ± 31.0 Tg C year–1. Gains result from forest growth; losses result from deforestation and from reductions in carbon density within standing forests (degradation or disturbance), with the latter accounting for 68.9% of overall losses. © 2017, American Association for the Advancement of Science. All rights reserved.
英文关键词	carbon; carbon; annual variation; bottom-up approach; carbon balance; carbon sink; deforestation; growth; MODIS; satellite data; tropical forest; vegetation cover; woody plant; Article; biomass; carbon balance; carbon cycle; carbon sequestration; carbon sink; carbon source; carbon storage; climate change; deforestation; environmental policy; grid cell; land use; priority journal; tropical rain forest; vegetation; carbon cycle; forest; Carbon; Carbon Cycle; Forests
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/242920
作者单位	Woods Hole Research Center, 149 Woods Hole Road, Falmouth, MA 04523, United States; Department of Mathematics and Statistics, Boston University, Boston, MA, United States; Department of Earth and Environment, Boston University, Boston, MA, United States
推荐引用方式 GB/T 7714	Baccini A.,Walker W.,Carvalho L.,et al. Tropical forests are a net carbon source based on aboveground measurements of gain and loss[J],2017,358(6360).
APA	Baccini A.,Walker W.,Carvalho L.,Farina M.,Sulla-Menashe D.,&Houghton R.A..(2017).Tropical forests are a net carbon source based on aboveground measurements of gain and loss.Science,358(6360).
MLA	Baccini A.,et al."Tropical forests are a net carbon source based on aboveground measurements of gain and loss".Science 358.6360(2017).