Spatial variations and controls of carbon use efficiency in China's terrestrial ecosystems

doi:10.1038/s41598-019-56115-5

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

	Spatial variations and controls of carbon use efficiency in China's terrestrial ecosystems
	Chen, Zhi 1,2,3; Yu, Guirui 1,2,3
刊名	SCIENTIFIC REPORTS
	2019-12-20
卷号	9 页码:10
ISSN号	2045-2322
DOI	10.1038/s41598-019-56115-5
通讯作者	Chen, Zhi(chenz@igsnrr.ac.cn)
英文摘要	Carbon use efficiency (CUE), one of the most important eco-physiological parameters, represents the capacity of plants to transform carbon into new biomass. Understanding the variations and controls of CUE is crucial for regional carbon assessment. Here, we used 15-years of continuous remote sensing data to examine the variations of CUE across broad geographic and climatic gradients in China. The results showed that the vegetation CUE was averaged to 0.54 +/- 0.11 with minor interannual variation. However, the CUE greatly varied with geographic gradients and ecosystem types. Forests have a lower CUE than grasslands and croplands. Evergreen needleleaf forests have a higher CUE than other forest types. Climate factors (mean annual temperature (MAT), precipitation (MAP) and the index of water availability (IWA)) dominantly regulated the spatial variations of CUE. The CUE exhibited a linear decrease with enhanced MAT and MAP and a parabolic response to the IWA. Furthermore, the responses of CUE to environmental change varied with individual ecosystem type. In contrast, precipitation exerted strong control on CUE in grassland, while in forest and cropland, the CUE was mainly controlled by the available water. This study identifies the variations and response of CUE to environmental drivers in China, which will be valuable for the regional assessment of carbon cycling dynamics under future climate change.
资助项目	National Key Research and Development Program of China[2016YFA0600103] ; National Key Research and Development Program of China[2016YFA0600104] ; National Natural Science Foundation of China[31600347] ; National Natural Science Foundation of China[41671045] ; International Partnership Program of Chinese Academy of Sciences[121311KYSB20170004]
WOS关键词	NET PRIMARY PRODUCTION ; PRIMARY PRODUCTIVITY ; EDDY COVARIANCE ; FOREST ECOSYSTEMS ; CONSTANT FRACTION ; CLIMATE DRIVERS ; GLOBAL PATTERNS ; DIOXIDE UPTAKE ; RESPIRATION ; GROSS
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000508868500041
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/131588]
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
作者单位	1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Synth Res Ctr Chinese Ecosyst Res Network, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zhi,Yu, Guirui. Spatial variations and controls of carbon use efficiency in China's terrestrial ecosystems[J]. SCIENTIFIC REPORTS,2019,9:10.
APA	Chen, Zhi,&Yu, Guirui.(2019).Spatial variations and controls of carbon use efficiency in China's terrestrial ecosystems.SCIENTIFIC REPORTS,9,10.
MLA	Chen, Zhi,et al."Spatial variations and controls of carbon use efficiency in China's terrestrial ecosystems".SCIENTIFIC REPORTS 9(2019):10.