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Seasonal dynamics of water use efficiency of typical forest and grassland ecosystems in China
Zhu, XianJin(朱先进); Yu, GR; Wang, QF; Hu, ZM; Han, SJ; Yan, JH; Wang, YF; Zhao, L
2014
Source PublicationJOURNAL OF FOREST RESEARCH
Volume19Issue:1Pages:70-76
Corresponding AuthorYu, GR
Abstract

We selected four sites of ChinaFLUX representing four major ecosystem types in China-Changbaishan temperate broad-leaved Korean pine mixed forest (CBS), Dinghushan subtropical evergreen broadleaved forest (DHS), Inner Mongolia temperate steppe (NM), and Haibei alpine shrub-meadow (HBGC)-to study the seasonal dynamics of ecosystem water use efficiency (WUE = GPP/ET, where GPP is gross primary productivity and ET is evapotranspiration) and factors affecting it. Our seasonal dynamics results indicated single-peak variation of WUE in CBS, NM, and HBGC, which were affected by air temperature (Ta) and leaf area index (LAI), through their effects on the partitioning of evapotranspiration (ET) into transpiration (T) (i.e., T/ET). In DHS, WUE was higher at the beginning and the end of the year, and minimum in summer. Ta and soil water content affected the seasonal dynamics of WUE through their effects on GPP/T. Our results indicate that seasonal dynamics of WUE were different because factors affecting the seasonal dynamics and their mechanism were different among the key ecosystems.

KeywordEcosystems In chIna Eddy Covariance Seasonal Dynamics Water Use Efficiency
Indexed BySCI
Funding OrganizationNational Key Research and Development Program 2010CB833504;National Natural Science Foundation of China 30800151 31061140359 30590381 40971027
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/28805
Collection研究生部
生态系统网络观测与模拟院重点实验室_生态系统综合研究中心
Recommended Citation
GB/T 7714
Zhu, XianJin,Yu, GR,Wang, QF,et al. Seasonal dynamics of water use efficiency of typical forest and grassland ecosystems in China[J]. JOURNAL OF FOREST RESEARCH,2014,19(1):70-76.
APA Zhu, XianJin.,Yu, GR.,Wang, QF.,Hu, ZM.,Han, SJ.,...&Zhao, L.(2014).Seasonal dynamics of water use efficiency of typical forest and grassland ecosystems in China.JOURNAL OF FOREST RESEARCH,19(1),70-76.
MLA Zhu, XianJin,et al."Seasonal dynamics of water use efficiency of typical forest and grassland ecosystems in China".JOURNAL OF FOREST RESEARCH 19.1(2014):70-76.
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