Magnitude, pattern and controls of carbon flux and carbon use efficiency in China's typical forests

doi:10.1016/j.gloplacha.2018.11.004

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 生态系统研究网络观测与模拟重点实验室 > CERN水分分中心

	Magnitude, pattern and controls of carbon flux and carbon use efficiency in China's typical forests
	Chen, Zhi 1,2; Yu, Guirui 1,2; Wang, Qiufeng 1,2
刊名	GLOBAL AND PLANETARY CHANGE
	2019
卷号	172 页码:464-473
关键词	Carbon flux Carbon use efficiency Spatial variation Climate regulation Forest age
ISSN号	0921-8181
DOI	10.1016/j.gloplacha.2018.11.004
通讯作者	Chen, Zhi(chenz@igsnrr.ac.cn) ; Yu, Guirui(yugr@igsnrr.ac.cn)
英文摘要	Forest carbon exchange and use efficiency (the capacity of transferring gross primary production to net ecosystem production) play an important role in regulating the atmospheric carbon balance and thus affecting the climate. Here, we conducted a synthesis of eddy covariance fluxes measurement across China's typical forests to examine the magnitude, pattern and controls of forest carbon fluxes and carbon use efficiency. The results showed that China's forests had strong carbon sink capacity and high carbon use efficiency. The average annual gross primary production (GPP), ecosystem respiration (RE) and net ecosystem production (NEP) of forests was 1541 +/- 92, 1155 +/- 91 and 382 +/- 37g C M-2 a(-1), and the average NEP:GPP, RE:GPP and NEP:RE was 0.25 +/- 0.02, 0.74 +/- 0.02 and 0.36 +/- 0.04, respectively. Both carbon fluxes and use efficiency significantly varied with biomes, presenting higher values in subtropical and temperate forests than tropical and boreal forests. GPP and RE geographically decreased linearly with latitude increasing, while the NEP and its ratios to GPP and RE peaked at the mid-latitude. Large variances of carbon fluxes and use efficiency were mainly attributable to the regulation of mean annual temperature (MAT). MAT explained 40-54% of the variation in carbon fluxes, and 21-47% of variation in carbon use efficiency. Our result also indicated that carbon use efficiency was affected by stand age that presented an apparent decreasing trend from young to old-growth forests. The results advance our understanding about the variances and controls of carbon exchange and use efficiency and are valuable for regional carbon budget assessment.
资助项目	National Natural Science Foundation of China[31600347] ; National Natural Science Foundation of China[41671045] ; National Key Research and Development Program of China[2016YFA0600104] ; National Key Research and Development Program of China[2016YFA0600103] ; Science and Technology Service Network Initiative of the Chinese Academy of Sciences
WOS关键词	TERRESTRIAL ECOSYSTEMS ; SUBTROPICAL FOREST ; SPATIAL VARIATION ; BOREAL FOREST ; EXCHANGE ; RESPIRATION ; TEMPERATURE ; CLIMATE ; BALANCE ; PRECIPITATION
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000456222800034
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Science and Technology Service Network Initiative of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/50643]
专题	地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
通讯作者	Chen, Zhi; Yu, Guirui
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Synth Res Ctr Chinese Ecosyst Res Network, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zhi,Yu, Guirui,Wang, Qiufeng. Magnitude, pattern and controls of carbon flux and carbon use efficiency in China's typical forests[J]. GLOBAL AND PLANETARY CHANGE,2019,172:464-473.
APA	Chen, Zhi,Yu, Guirui,&Wang, Qiufeng.(2019).Magnitude, pattern and controls of carbon flux and carbon use efficiency in China's typical forests.GLOBAL AND PLANETARY CHANGE,172,464-473.
MLA	Chen, Zhi,et al."Magnitude, pattern and controls of carbon flux and carbon use efficiency in China's typical forests".GLOBAL AND PLANETARY CHANGE 172(2019):464-473.