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	Thermal adaptation of net ecosystem exchange
	Chen J.; Yuan W.; Liu H.; Luo Y.
	2011
关键词	carbon-dioxide exchange long-term measurements oak-dominated forest scots pine forest sub-alpine forest soil respiration deciduous forest interannual variability temperate forest european forests
英文摘要	Thermal adaptation of gross primary production and ecosystem respiration has been well documented over broad thermal gradients. However, no study has examined their interaction as a function of temperature, i.e. the thermal responses of net ecosystem exchange of carbon (NEE). In this study, we constructed temperature response curves of NEE against temperature using 380 site-years of eddy covariance data at 72 forest, grassland and shrubland ecosystems located at latitudes ranging from similar to 29 degrees N to 64 degrees N. The response curves were used to define two critical temperatures: transition temperature (T(b)) at which ecosystem transfer from carbon source to sink and optimal temperature (T(o)) at which carbon uptake is maximized. T(b) was strongly correlated with annual mean air temperature. T(o) was strongly correlated with mean temperature during the net carbon uptake period across the study ecosystems. Our results imply that the net ecosystem exchange of carbon adapts to the temperature across the geographical range due to intrinsic connections between vegetation primary production and ecosystem respiration.
出处	Biogeosciences
卷	8
期	6
页	1453-1463
收录类别	SCI
语种	英语
ISSN号	1726-4170
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/22486]
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	Chen J.,Yuan W.,Liu H.,et al. Thermal adaptation of net ecosystem exchange. 2011.

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