Evapotranspiration and its dominant controls along an elevation gradient in the Qinghai Lake watershed, northeast Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Ma, Yu-Jun2,3,4; Li, Xiao-Yan3,4; Liu, Lei1; Yang, Xiao-Fan3,4; Wu, Xiu-Chen3,4; Wang, Pei3,4; Lin, Henry5; Zhang, Guang-Hui3; Miao, Chi-Yuan3 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2019-08-01 |
| 卷号 | 575页码:257-268 |
| 关键词 | Solar radiation Air temperature Soil moisture content Evapotranspiration Qinghai Lake watershed |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2019.05.019 |
| 通讯作者 | Ma, Yu-Jun(myj3648@163.com) |
| 英文摘要 | Evapotranspiration (ET) and its dominant controls show obvious elevational pattern on the Qinghai-Tibet Plateau, due to heterogeneous environmental conditions regulated by altitude. To understand better how and why ET varies at different altitudes in the Qinghai Lake watershed, this study measured and retrieved soil moisture, solar radiation, and ET data between 3300 m and 4700 m, and further investigated the influence of water and energy conditions on ET. Results showed that, the mean annual terrestrial ET was 343 and 360 mm in this watershed in 2014 and 2015, respectively. The higher ET mainly appeared in the midstream of Shaliu River and on the southern region of Qinghai Lake, while the sand land on the east of Qinghai Lake and the bare rock in the northwest of the watershed had the lowest values. The ET increased firstly and then decreased with the increase of altitude, and its peak value appeared at 3600-3700 m. The dominant controls for ET switched from water conditions to energy conditions with the increase of elevation. The maximum limited fraction [(predicted value - actual value)/predicted value x 100] of ET by water condition (soil moisture content) achieved 11.2% and 10.1% at 3300-3350 m in 2014 and 2015, and the corresponding mean area-weighted values were 7.3% and 5.4% at 3300-3650 m, respectively. The maximum limited fraction of ET by energy condition (shortwave radiation and air temperature) achieved 24.4% and 29.8% at 4650-4700 m in 2014 and 2015, and the corresponding mean area-weighted values were 10.8% and 11.9% at 3650-4700 m, respectively. Overall, the energy conditions were more influential factors limiting the ET in the entire watershed, and this conclusion is critical for the management of regional terrestrial ecosystem with future climate change. |
| WOS关键词 | SOIL-MOISTURE ; SURFACE-TEMPERATURE ; 3-TEMPERATURE MODEL ; CLIMATE-CHANGE ; ENERGY ; ECOSYSTEMS ; DYNAMICS ; PRECIPITATION ; RESPIRATION ; SENSITIVITY |
| 资助项目 | National Natural Science Foundation of China[NSFC 41730854] ; National Natural Science Foundation of China[41771026] ; National Key Research and Development Program of China[2016YFE0203400-01] ; PCSIRT of China[IRT_15R06] ; State Key Laboratory of Earth Surface Processes and Resource Ecology, China[2017-FX-04] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000488143000021 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; PCSIRT of China ; State Key Laboratory of Earth Surface Processes and Resource Ecology, China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/129703]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Ma, Yu-Jun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Sun Yat Sen Univ, Sch Geog & Planning, 135 Xingangxi Rd, Guangzhou 510275, Guangdong, Peoples R China 3.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 4.Beijing Normal Univ, Sch Nat Resources, Fac Geog Sci, Beijing 100875, Peoples R China 5.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA |
| 推荐引用方式 GB/T 7714 | Ma, Yu-Jun,Li, Xiao-Yan,Liu, Lei,et al. Evapotranspiration and its dominant controls along an elevation gradient in the Qinghai Lake watershed, northeast Qinghai-Tibet Plateau[J]. JOURNAL OF HYDROLOGY,2019,575:257-268. |
| APA | Ma, Yu-Jun.,Li, Xiao-Yan.,Liu, Lei.,Yang, Xiao-Fan.,Wu, Xiu-Chen.,...&Miao, Chi-Yuan.(2019).Evapotranspiration and its dominant controls along an elevation gradient in the Qinghai Lake watershed, northeast Qinghai-Tibet Plateau.JOURNAL OF HYDROLOGY,575,257-268. |
| MLA | Ma, Yu-Jun,et al."Evapotranspiration and its dominant controls along an elevation gradient in the Qinghai Lake watershed, northeast Qinghai-Tibet Plateau".JOURNAL OF HYDROLOGY 575(2019):257-268. |
入库方式： OAI收割
来源：地理科学与资源研究所
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