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Magnitude, pattern and controls of carbon flux and carbon use efficiency in China's typical forests
Chen, Zhi1,2; Yu, Guirui1,2; Wang, Qiufeng1,2
2019
Source PublicationGLOBAL AND PLANETARY CHANGE
ISSN0921-8181
Volume172Pages:464-473
Corresponding AuthorChen, Zhi(chenz@igsnrr.ac.cn) ; Yu, Guirui(yugr@igsnrr.ac.cn)
AbstractForest 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.
KeywordCarbon flux Carbon use efficiency Spatial variation Climate regulation Forest age
DOI10.1016/j.gloplacha.2018.11.004
WOS KeywordTERRESTRIAL ECOSYSTEMS ; SUBTROPICAL FOREST ; SPATIAL VARIATION ; BOREAL FOREST ; EXCHANGE ; RESPIRATION ; TEMPERATURE ; CLIMATE ; BALANCE ; PRECIPITATION
Indexed BySCI
Language英语
Funding ProjectNational 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
Funding OrganizationNational 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
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000456222800034
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/50644
Collection中国科学院地理科学与资源研究所
Corresponding AuthorChen, Zhi; Yu, Guirui
Affiliation1.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
Recommended Citation
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.
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