气候变化领域集成服务门户(CCPortal): Contribution of disturbance to increasing seasonal amplitude of atmospheric CO2

CCPortal

DOI	10.1126/science.284.5422.1973
	Contribution of disturbance to increasing seasonal amplitude of atmospheric CO2
	Zimov S.A.; Davidov S.P.; Zimova G.M.; Davidova A.I.; Chapin III F.S.; Chapin M.C.; Reynolds J.F.
发表日期	1999
ISSN	0036-8075
起始页码	1973
结束页码	1976
卷号	284 期号:5422
英文摘要	Recent increases in the seasonal amplitude of atmospheric carbon dioxide (C02) at high latitudes suggest a widespread biospheric response to high- latitude warming. The seasonal amplitude of net ecosystem carbon exchange by northern Siberian ecosystems is shown to be greater in disturbed than undisturbed sites, due to increased summer influx and increased winter efflux. Increased disturbance could therefore contribute significantly to the amplified seasonal cycle of atmospheric carbon dioxide at high latitudes. Warm temperatures reduced summer carbon influx, suggesting that high-latitude warming, if it occurred, would be unlikely to increase seasonal amplitude of carbon exchange.Recent increases in the seasonal amplitude of atmospheric carbon dioxide (CO2) at high latitudes suggest a widespread biospheric response to high-latitude warming. The seasonal amplitude of net ecosystem carbon exchange by northern Siberian ecosystems is shown to be greater in disturbed than undisturbed sites, due to increased summer influx and increased winter efflux. Increased disturbance could therefore contribute significantly to the amplified seasonal cycle of atmospheric carbon dioxide at high latitudes. Warm temperatures reduced summer carbon influx, suggesting that high-latitude warming, if it occurred, would be unlikely to increase seasonal amplitude of carbon exchange.
英文关键词	Ecosystems; Global warming; Atmospheric carbon dioxide; Carbon dioxide; carbon dioxide; atmospheric chemistry; carbon dioxide enrichment; seasonality; agriculture; air temperature; article; atmosphere; biosphere; carbon dioxide measurement; ecosystem; greenhouse effect; priority journal; season; summer; winter; Russian Federation
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/246185
作者单位	North-East Scientific Station, Pacific Institute for Geography, Russian Academy of Sciences, Yakutia, 678830 Cherskii, Russian Federation; Institute of Arctic Biology, University of Alaska, Fairbanks, AK 99775-7000, United States; Department of Botany, Duke University, Durham, NC 27708-0340, United States
推荐引用方式 GB/T 7714	Zimov S.A.,Davidov S.P.,Zimova G.M.,et al. Contribution of disturbance to increasing seasonal amplitude of atmospheric CO2[J],1999,284(5422).
APA	Zimov S.A..,Davidov S.P..,Zimova G.M..,Davidova A.I..,Chapin III F.S..,...&Reynolds J.F..(1999).Contribution of disturbance to increasing seasonal amplitude of atmospheric CO2.Science,284(5422).
MLA	Zimov S.A.,et al."Contribution of disturbance to increasing seasonal amplitude of atmospheric CO2".Science 284.5422(1999).