Exploring the contribution of environmental factors to evapotranspiration dynamics in the Three-River-Source region, China
文献类型：期刊论文
| 作者 | Zhao, Yan5; Chen, Yanan5; Wu, Chaoyang4; Li, Guo5; Ma, Mingguo5; Fan, Lei5; Zheng, Hui3; Song, Lisheng2; Tang, Xuguang1 |
| 刊名 | JOURNAL OF HYDROLOGY
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| 出版日期 | 2023-11-01 |
| 卷号 | 626页码:16 |
| ISSN号 | 0022-1694 |
| 关键词 | ET LAI Environmental drivers TRSR Global climate change |
| DOI | 10.1016/j.jhydrol.2023.130222 |
| 通讯作者 | Tang, Xuguang(xgtang@hznu.edu.cn) |
| 英文摘要 | Evapotranspiration (ET) exerts substantial effects on terrestrial ecosystem carbon and water cycles. A deep understanding of the spatial and temporal variability in ET and its dominant controls has crucial implications for future ecological management, especially for the ecologically-fragile Three-River-Source region (TRSR) in China. The study examined the performance of three ET products including Global Land Evaporation Amsterdam Model (GLEAM), Famine Early Warning Systems Network Land Data Assimilation System (FLDAS) and Global Land Surface Satellite (GLASS) based on eddy covariance-based flux observations. On this basis, ET dynamics in the TRSR from 1982 to 2018 were analyzed at two time scales using the GLASS ET product. Spatially, the pattern in ET showed a gradual upward trend from northwest to southeast. Meanwhile, ET in the majority of regions significantly enhanced, with multiannual mean ET and summer ET (June to August) increasing by 0.609 mm/yr and 0.765 mm/yr, respectively. Especially, ET in summer dominated the interannual dynamics of ET in the TRSR. The individual contributions of five environmental factors including Leaf Area Index (LAI), solar radiation (Rs), air temperature (Ta), precipitation (PRE) and vapour pressure deficit (VPD), to the variability in ET were isolated using ridge regression. Significant differences appeared when explaining ET over different time scales. Rs (33.05 %) and LAI (25.29 %) were the dominant control variables in shaping the interannual ET, with VPD contributing the least by 7.19 %. However, the long-term dynamics in summer ET were mainly controlled by LAI (35.73 %) and PRE (31.19 %), and Ta exerted the least effect by 5.73 %. All analyses will strengthen our understanding of the relationships between climate, vegetation and ET in the TRSR area, China. |
| WOS关键词 | WATER-USE EFFICIENCY ; CLIMATE-CHANGE ; HEADWATERS REGION ; TIBETAN PLATEAU ; TERRESTRIAL EVAPOTRANSPIRATION ; LAND EVAPOTRANSPIRATION ; CARBON-DIOXIDE ; VEGETATION ; TEMPERATURE ; EVAPORATION |
| 资助项目 | Special Project on National Science and Technology Basic Resources Investigation of China[2021FY100701] ; National Major Projects on High-Resolution Earth Observation System[21-Y20B01-9001-19/22] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001089764500001 |
| 资助机构 | Special Project on National Science and Technology Basic Resources Investigation of China ; National Major Projects on High-Resolution Earth Observation System |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/199048]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Tang, Xuguang |
| 作者单位 | 1.Hangzhou Normal Univ, Inst Remote Sensing & Geosci, Hangzhou 311121, Peoples R China 2.Anhui Normal Univ, Sch Geog & Tourism, Key Lab Earth Surface Proc & Reg Response Yangtze, Wuhu 241000, Peoples R China 3.Guangxi Normal Univ, Coll Environm & Resources, Guilin 541006, Peoples R China 4.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 5.Southwest Univ, Sch Geog Sci, Chongqing Jinfo Mt Karst Ecosyst Natl Observat & R, Chongqing 400715, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Yan,Chen, Yanan,Wu, Chaoyang,et al. Exploring the contribution of environmental factors to evapotranspiration dynamics in the Three-River-Source region, China[J]. JOURNAL OF HYDROLOGY,2023,626:16. |
| APA | Zhao, Yan.,Chen, Yanan.,Wu, Chaoyang.,Li, Guo.,Ma, Mingguo.,...&Tang, Xuguang.(2023).Exploring the contribution of environmental factors to evapotranspiration dynamics in the Three-River-Source region, China.JOURNAL OF HYDROLOGY,626,16. |
| MLA | Zhao, Yan,et al."Exploring the contribution of environmental factors to evapotranspiration dynamics in the Three-River-Source region, China".JOURNAL OF HYDROLOGY 626(2023):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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