Impacts of Diffuse Radiation on Light Use Efficiency across Terrestrial Ecosystems Based on Eddy Covariance Observation in China
Huang, K; Wang, SQ; Zhou, L; Wang, HM; Zhang, JH; Yan, JH; Zhao, L; Wang, YF; Shi, PL
2014
Source PublicationPLOS ONE
ISSN1932-6203
Volume9Issue:11Pages:-
AbstractEcosystem light use efficiency (LUE) is a key factor of production models for gross primary production (GPP) predictions. Previous studies revealed that ecosystem LUE could be significantly enhanced by an increase on diffuse radiation. Under large spatial heterogeneity and increasing annual diffuse radiation in China, eddy covariance flux data at 6 sites across different ecosystems from 2003 to 2007 were used to investigate the impacts of diffuse radiation indicated by the cloudiness index (CI) on ecosystem LUE in grassland and forest ecosystems. Our results showed that the ecosystem LUE at the six sites was significantly correlated with the cloudiness variation (0.24 <= R-2 <= 0.85), especially at the Changbaishan temperate forest ecosystem (R-2 = 0.85). Meanwhile, the CI values appeared more frequently between 0.8 and 1.0 in two subtropical forest ecosystems (Qianyanzhou and Dinghushan) and were much larger than those in temperate ecosystems. Besides, cloudiness thresholds which were favorable for enhancing ecosystem carbon sequestration existed at the three forest sites, respectively. Our research confirmed that the ecosystem LUE at the six sites in China was positively responsive to the diffuse radiation, and the cloudiness index could be used as an environmental regulator for LUE modeling in regional GPP prediction.
SubtypeJournal
Subject AreaScience & Technology - Other Topics
WOS Subject ExtendedMultidisciplinary Sciences
WOS KeywordGROSS PRIMARY PRODUCTION ; LEYMUS-CHINENSIS STEPPE ; WATER-USE EFFICIENCY ; NET ECOSYSTEM ; PRIMARY PRODUCTIVITY ; CARBON-DIOXIDE ; CO2 EXCHANGE ; GRASSLAND ECOSYSTEMS ; FOREST ECOSYSTEMS ; SOLAR-RADIATION
Indexed BySCI
Language英语
WOS IDWOS:000347709300008
PublisherPUBLIC LIBRARY SCIENCE
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44490
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Huang, K,Wang, SQ,Zhou, L,et al. Impacts of Diffuse Radiation on Light Use Efficiency across Terrestrial Ecosystems Based on Eddy Covariance Observation in China[J]. PLOS ONE,2014,9(11):-.
APA Huang, K.,Wang, SQ.,Zhou, L.,Wang, HM.,Zhang, JH.,...&Shi, PL.(2014).Impacts of Diffuse Radiation on Light Use Efficiency across Terrestrial Ecosystems Based on Eddy Covariance Observation in China.PLOS ONE,9(11),-.
MLA Huang, K,et al."Impacts of Diffuse Radiation on Light Use Efficiency across Terrestrial Ecosystems Based on Eddy Covariance Observation in China".PLOS ONE 9.11(2014):-.
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