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	Regional pattern and interannual variations in global terrestrial carbon uptake in response to changes in climate and atmospheric CO2
	Tao B.
	2005
关键词	net primary production satellite-observations primary productivity united-states land forests sink 20th-century respiration temperature
英文摘要	Atmospheric measurements indicate that the terrestrial carbon sink increased substantially from the 1980s to the 1990s, but which factors and regions were responsible for the increase are not well identified yet. Using process- and remote sensing-based ecosystem models, we show that changes in climate and atmospheric CO2 in the period 1981-2000 enhanced net ecosystem production (NEP) and caused major geographical changes in the global distribution of NEP. In the 1980s the Americas accounted for almost all of the global NEP, but in the 1990s NEP in Eurasia and Africa became higher than that of the Americas. The year-to-year variation in global NEP was up to 2.5 Pg C (1 Pg = 10(15) g), in which 1.4 Pg C was attributable to the El Nino Southern Oscillation cycle (ENSO). NEP clearly decreased in El Nino and increased in La Nina in South America and Africa, but the response in North America and Eurasia was mixed. The estimated NEP increases accounted for only 30% of the global terrestrial carbon sink but can explain almost all of the increase from the 1980s to the 1990s. Because a large part of the increase in NEP was driven by the long-term trend of climate and atmospheric CO2, the increase in the global terrestrial carbon sink from the 1980s to the 1990s was a continuation of the trend since the middle of the twentieth century, rather than merely a consequence of short-time climate variability.
出处	Tellus Series B-Chemical and Physical Meteorology
卷	57
期	3
页	210-217
收录类别	SCI
语种	英语
ISSN号	0280-6509
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24282]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Tao B.. Regional pattern and interannual variations in global terrestrial carbon uptake in response to changes in climate and atmospheric CO2. 2005.

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