Vegetation greening and climate change promote an increase in evapotranspiration across Siberia
文献类型：期刊论文
| 作者 | Shi, Shangyu1,2; Wang, Ping1,2; Yu, Jingjie1,2 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2022-07-01 |
| 卷号 | 610页码:12 |
| ISSN号 | 0022-1694 |
| 关键词 | Evapotranspiration Vegetation greening Climate change Siberia |
| DOI | 10.1016/j.jhydrol.2022.127965 |
| 通讯作者 | Wang, Ping(wangping@igsnrr.ac.cn) ; Yu, Jingjie(yujj@igsnrr.ac.cn) |
| 英文摘要 | The greening of the Arctic and pan-Arctic regions in recent decades has been widely confirmed, while the details regarding the greening feedback effects involving the water and energy cycles are still vague. Evapotranspiration (ET), a vital process in the water and energy cycles, strongly corresponds to vegetation activities. Hence, in this study, we chose Siberia as the study area and, based on the Penman-Monteith-Leuning (PML) model, revealed the contribution of greening to ET. Moreover, the effects of the water vapour pressure deficit, surface net radiation (Rn) and wind speed (Um) on ET were evaluated. The results indicated that from 2000 to 2020, the annual ET in Siberia was 248.2 +/- 94.1 mm, and the trend was 0.54 +/- 1.38 mm/a. Greening was the major driver of ET variations; its contribution was 0.79 +/- 0.76 mm/a, and its relative contribution was 37%. Among the other analysed climate factors, ET was sensitive to R-n and U-m these factors contributed 0.51 +/- 0.85 mm/a and -0.38 +/- 0.54 mm/a, respectively, to ET variation, and their relative contributions were 33% and 19%, respectively. The effect of the water vapour pressure deficit was slight (0.29 +/- 0.22 mm/a, 11%), indicating that ET was hardly constrained by the water supply in Siberia. These results quantify the importance of greening on ET variations and highlight the important effects of R-n and U-m on ET in cold region terrestrial ecosystems. Furthermore, this study improves our understanding of the mechanism by which evapotranspiration varies and is valuable for predicting and evaluating the Arctic water cycle in "Arctic amplification".; |
| WOS关键词 | GLOBAL WATER CYCLE ; SAP FLOW ; PERMAFROST ; ENERGY ; TEMPERATURE ; EVAPORATION ; HYDROLOGY ; PATTERNS ; MOISTURE ; TRENDS |
| 资助项目 | National Natural Science Foundation of China[42061134017] ; National Natural Science Foundation of China[41877165] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000922399900005 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/189856]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Ping; Yu, Jingjie |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Shangyu,Wang, Ping,Yu, Jingjie. Vegetation greening and climate change promote an increase in evapotranspiration across Siberia[J]. JOURNAL OF HYDROLOGY,2022,610:12. |
| APA | Shi, Shangyu,Wang, Ping,&Yu, Jingjie.(2022).Vegetation greening and climate change promote an increase in evapotranspiration across Siberia.JOURNAL OF HYDROLOGY,610,12. |
| MLA | Shi, Shangyu,et al."Vegetation greening and climate change promote an increase in evapotranspiration across Siberia".JOURNAL OF HYDROLOGY 610(2022):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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