Exploring evapotranspiration changes in a typical endorheic basin through the integrated observatory network
文献类型：期刊论文
| 作者 | Xu, Ziwei1; Liu, Shaomin1; Zhu, Zhongli1; Zhou, Ji2; Shi, Wenjiao3,4 ; Xu, Tongren1; Yang, Xiaofan1; Zhang, Yuan1; He, Xinlei1
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| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2020-08-15 |
| 卷号 | 290页码:14 |
| 关键词 | Multiscale evapotranspiration Typical ecosystem Oasis-desert system Heihe river basin |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2020.108010 |
| 通讯作者 | Liu, Shaomin(smliu@bnu.edu.cn) |
| 英文摘要 | The Heihe River Basin (HRB), with unique landscapes and coexisting cold and arid regions, is the second largest endorheic basin in northwestern China. The Heihe integrated observatory network was established in 2007, which included multi-element, multiscale, distributed, and incorporating satellite-airborne-ground based observations via Internet of Things technology; these observations span the main land cover of the basin. This observatory provides a great opportunity to analyze the spatiotemporal variation in evapotranspiration (ET) in the HRB, and ET characteristics were investigated on three scales (typical ecosystems, oasis-desert systems, watershed) taking the HRB as a research object. The average annual ET in typical ecosystems is approximately 380-530 mm upstream (alpine meadow, Qinghai spruce, shrub), 640-1000 mm midstream (maize, wetland), 610-680 mm downstream (riparian forest), and 190 mm and 50 mm in midstream and downstream desert surfaces, respectively. The ET from plant surfaces is strongly controlled by available energy in upstream and midstream regions, while it is controlled by vapor pressure deficit (VPD) and surface conductance downstream. The ET in oasis and desert systems is characterized by three gradients: plant, residential area/barren land, and desert, with a maximum difference of annual ET more than 500 mm. This difference is primarily caused by variations of soil moisture among different underlying surfaces. For watershed ET, higher ET was observed upstream, and it decreased from midstream to downstream, with the highest values in the oasis. The annual ET in the main plant surfaces was approximately 500-700 mm, 600-800 mm, and 600-700 mm in the up-, mid-, and downstream regions, respectively, while the ET was approximately 100-250 mm and 50-200 mm in desert and barren or sparsely vegetation surfaces in the mid-and downstream regions, respectively. The spatiotemporal variations of ET were primarily influenced by land cover, soil moisture, vegetation condition and available energy. The results improve our understanding of the spatiotemporal variations in ET in the HRB and apply to comparable endorheic basins with similar climatic and landscape conditions. |
| WOS关键词 | ENERGY-BALANCE CLOSURE ; LAND-SURFACE EVAPORATION ; CARBON-DIOXIDE EXCHANGE ; EDDY-COVARIANCE ; HEIHE RIVER ; TERRESTRIAL EVAPOTRANSPIRATION ; UPSCALING EVAPOTRANSPIRATION ; INTERANNUAL VARIABILITY ; RANDOM FOREST ; FLUX TOWERS |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20100101] ; National Natural Science Foundation of China[41771364] ; State Key Laboratory of Earth Surface Processes and Resource Ecology[2017-FX-04] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000540172000011 |
| 出版者 | ELSEVIER |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; State Key Laboratory of Earth Surface Processes and Resource Ecology |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/162226]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Shaomin |
| 作者单位 | 1.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, 19 Xinjiekouwai St, Beijing 100875, Peoples R China 2.Univ Elect Sci & Technol China, Ctr Informat Geosci, Sch Resources & Environm, Chengdu 611731, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Ziwei,Liu, Shaomin,Zhu, Zhongli,et al. Exploring evapotranspiration changes in a typical endorheic basin through the integrated observatory network[J]. AGRICULTURAL AND FOREST METEOROLOGY,2020,290:14. |
| APA | Xu, Ziwei.,Liu, Shaomin.,Zhu, Zhongli.,Zhou, Ji.,Shi, Wenjiao.,...&He, Xinlei.(2020).Exploring evapotranspiration changes in a typical endorheic basin through the integrated observatory network.AGRICULTURAL AND FOREST METEOROLOGY,290,14. |
| MLA | Xu, Ziwei,et al."Exploring evapotranspiration changes in a typical endorheic basin through the integrated observatory network".AGRICULTURAL AND FOREST METEOROLOGY 290(2020):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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