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Approaches of climate factors affecting the spatial variation of annual gross primary productivity among terrestrial ecosystems in China
Zhu X. J.; Yu, G. R.; Wang, Q. F.; Gao, Y. N.; He, H. L.; Zheng, H.; Chen, Z.; Shi, P. L.; Zhao, L.; Li, Y. N.; Wang, Y. F.; Zhang, Y. P.; Yan, J. H.; Wang, H. M.; Zhao, F. H.; Zhang, J. H.
Source PublicationEcological Indicators
2016
Volume62
Pages174-181
KeywordGross primary productivity Eddy covariance Annual mean air temperature Annual precipitation Carbon cycle Terrestrial ecosystems Radiation use efficiency CO2 mass concentration carbon-dioxide exchange light use efficiency qinghai-tibetan plateau net primary production eddy covariance data alpine meadow co2 exchange grassland ecosystems forest ecosystem inner-mongolia
AbstractAnalyzing the approaches that climatic factors affect the spatial variation of annual gross primary productivity (GPP(yr)) would improve our understanding on its spatial pattern. Based on network eddy covariance measurements and published data in literature, we separated GPP(yr) into radiation use efficiency (RUE) and annual absorbed photosynthesis active radiation (APAR(yr)), where APAR(yr) can be regarded as the product of the fraction of absorbed annual photosynthesis active radiation (FPAR(yr)) and annual PAR (PAR(yr)). Given that PAR(yr) affects the spatial variation of GPP(yr) directly through itself, we investigated factors affecting the spatial variations of RUE and FPAR(yr), to reveal how climatic factors affect the spatial variation of GPP(yr). Results suggest that the spatial variation of RUE was directly affected by annual mean air temperature (MAT) and annual mean CO2 mass concentration (rho(cyr)). The increasing MAT and rho(cyr), directly enhanced RUE. The increasing annual precipitation (MAP) directly prompted FPAR(yr). Therefore, MAT and rho(cyr) affected the spatial variation of GPP(yr) through altering RUE while the effect of MAP was achieved through altering FPAR(yr). Our study could also provide an alternative way for regional GPP(yr) assessment. (C) 2015 Elsevier Ltd. All rights reserved.
Indexed BySCI
Language英语
ISSN1470-160X
DOI10.1016/j.ecolind.2015.11.028
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43449
Collection历年回溯文献
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Zhu X. J.,Yu, G. R.,Wang, Q. F.,et al. Approaches of climate factors affecting the spatial variation of annual gross primary productivity among terrestrial ecosystems in China. 2016.
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