气候变化领域集成服务门户(CCPortal): Contribution of semi-arid forests to the climate system

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DOI	10.1126/science.1179998
	Contribution of semi-arid forests to the climate system
	Rotenberg E.; Yakir D.
发表日期	2010
ISSN	0036-8075
起始页码	451
结束页码	454
卷号	327 期号:5964
英文摘要	Forests both take up CO2 and enhance absorption of solar radiation, with contrasting effects on global temperature. Based on a 9-year study in the forests' dry timberline, we show that substantial carbon sequestration (cooling effect) is maintained in the large dry transition zone (precipitation from 200 to 600 millimeters) by shifts in peak photosynthetic activities from summer to early spring, and this is counteracted by longwave radiation (L) suppression (warming effect), doubling the forestation shortwave (S) albedo effect. Several decades of carbon accumulation are required to balance the twofold S + L effect. Desertification over the past several decades, however, contributed negative forcing at Earth's surface equivalent to ∼20% of the global anthropogenic CO2 effect over the same period, moderating warming trends.
英文关键词	carbon; carbon dioxide; carbon; absorption; anthropogenic effect; carbon dioxide; carbon sequestration; desertification; dry forest; global warming; precipitation (climatology); semiarid region; solar radiation; transition zone; treeline; warming; article; astronomy; carbon sequestration; ecosystem; forest; greenhouse effect; photosynthesis; priority journal; semiarid climate; solar radiation; spring; summer; climate; ecosystem; environmental protection; geography; growth, development and aging; Israel; metabolism; season; temperature; tree; Carbon; Carbon Dioxide; Climatic Processes; Conservation of Natural Resources; Ecosystem; Geography; Israel; Photosynthesis; Seasons; Temperature; Trees
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/245293
作者单位	Environmental Sciences and Energy Research, Weizmann Institute of Science, Rehovot 76100, Israel
推荐引用方式 GB/T 7714	Rotenberg E.,Yakir D.. Contribution of semi-arid forests to the climate system[J],2010,327(5964).
APA	Rotenberg E.,&Yakir D..(2010).Contribution of semi-arid forests to the climate system.Science,327(5964).
MLA	Rotenberg E.,et al."Contribution of semi-arid forests to the climate system".Science 327.5964(2010).