Evapotranspiration and energy partitioning of a typical alpine wetland in the central Tibetan Plateau
文献类型：期刊论文
| 作者 | Wang, Kunxin1,2; Ma, Ning3; Zhang, Yinsheng2,4; Qiang, Yaohui1,2; Guo, Yanhong2 |
| 刊名 | ATMOSPHERIC RESEARCH
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 267页码:14 |
| ISSN号 | 0169-8095 |
| 关键词 | Alpine wetland Tibetan Plateau Evapotranspiration Energy flux |
| DOI | 10.1016/j.atmosres.2021.105931 |
| 通讯作者 | Ma, Ning(ningma@igsnrr.ac.cn) ; Zhang, Yinsheng(yszhang@itpcas.ac.cn) |
| 英文摘要 | The alpine wetlands in the Tibetan Plateau (TP) account for more than 30% of the wetlands in China. As an ecosystem that is particularly sensitive to the changing climate, the rapid warming of the TP may have a significant impact on the growth of vegetation in these cold wetlands. However, due to the lack of ground observations, it remains unclear how the land-atmosphere exchanges of water and energy develop in such special alpine ecosystems. This limits the understanding of how eco-hydrological processes respond to environmental changes. In this study, we used ground measured data to investigate the dynamics of energy partitioning and water budget over a typical wetland in the central TP over two hydrological years. The results demonstrate that the seasonal variations in land-atmosphere energy exchange were significant during the observation period. In the growing season, the available energy was mainly consumed by latent heat flux (LE), with the mean ratio of LE to net radiation (R-n) exhibiting values of 0.68 and 0.76 in 2019 and 2020, respectively. During the freezing period, the available energy was primarily consumed by sensible heat flux (H), with mean ratio of H to R-n values of 0.69 and 0.68 in 2019 and 2020, respectively. The total annual evapotranspiration (ET) (include sublimation) in 2019 and 2020 were 652.5 mm and 706.6 mm, respectively. Annual ET was found to be higher than precipitation (P), indicating that soil water was supplied via lateral flow from the melting of upstream glaciers and snow, supporting ET from the wetland. During the growing season, ET was mainly controlled by solar radiation but became more strongly coupled with soil water during the freezing period. Evaluations of four typical gridded ET products suggest that the Penman-Monteith-Leuning (PML) model showed the best performance with the highest Nash-Sutcliffe Efficiency (NSE) when compared with the ground-measured ET rates, indicating that this product may be appropriate for use in similar data-scarce regions. The land-atmosphere energy and water exchanges in the alpine wetland are important for an improved understanding of the hydrological cycle of the Asian Water Tower and could be used as a reference for further ET model parameterizations and validations. |
| WOS关键词 | SURFACE HEAT-FLUX ; TERRESTRIAL EVAPOTRANSPIRATION ; CLIMATE CHANGES ; WATER ; EVAPORATION ; CHINA ; ECOSYSTEM ; HYDROLOGY ; EXCHANGE ; BALANCE |
| 资助项目 | National Key Research and Development Program of China[2017YFA0603101] ; Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0201] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20060201] ; National Natural Science Foundation of China[41801047] ; National Natural Science Foundation of China[41830105] ; National Natural Science Foundation of China[41430748] ; National Natural Science Foundation of China[41801051] ; China-Pakistan Joint Research Center on Earth Sciences |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE INC |
| WOS记录号 | WOS:000772634400002 |
| 资助机构 | National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; China-Pakistan Joint Research Center on Earth Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/173478]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Ma, Ning; Zhang, Yinsheng |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resource, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 4.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad 45320, Pakistan |
| 推荐引用方式 GB/T 7714 | Wang, Kunxin,Ma, Ning,Zhang, Yinsheng,et al. Evapotranspiration and energy partitioning of a typical alpine wetland in the central Tibetan Plateau[J]. ATMOSPHERIC RESEARCH,2022,267:14. |
| APA | Wang, Kunxin,Ma, Ning,Zhang, Yinsheng,Qiang, Yaohui,&Guo, Yanhong.(2022).Evapotranspiration and energy partitioning of a typical alpine wetland in the central Tibetan Plateau.ATMOSPHERIC RESEARCH,267,14. |
| MLA | Wang, Kunxin,et al."Evapotranspiration and energy partitioning of a typical alpine wetland in the central Tibetan Plateau".ATMOSPHERIC RESEARCH 267(2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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