Elevation-dependent changes in reference evapotranspiration due to climate change
文献类型：期刊论文
| 作者 | Sun Juying1,3; Wang Genxu2; Sun Xiangyang2; Lin Shan1,3; Hu Zhaoyong2; Huang Kewei1,3 |
| 刊名 | HYDROLOGICAL PROCESSES
 |
| 出版日期 | 2020 |
| 页码 | 114082 |
| 关键词 | climate change contribution analysis elevation‐ dependency reference evapotranspiration sensitivity |
| ISSN号 | 0885-6087 |
| DOI | 10.1016/j.envpol.2020.114082 |
| 产权排序 | 1 |
| 通讯作者 | Wang, Genxu(wanggx@scu.edu.cn) |
| 文献子类 | Article;Early Access |
| 英文摘要 | The Food and Agriculture Organizations' (FAO) Penman-Monteith reference evapotranspiration (ET0) is a crucial index in the research of water and energy balance. Temporal and spatial variations in ET0 from 1981-2017 were investigated in the Hengduan Mountains, China(.) The results showed a change point around the year 2000 in ET0 series. ET0 decreased and increased significantly by +3.200 mm/year (p < 0.01) from 1981-2000 and by +4.109 mm/year (p < 0.01) from 2001-2017, respectively. The contribution analysis shows that the positive significant contribution of air temperature (TA) was offset by negative effects of decreases in downward shortwave radiation (R-s) and wind speed (WS) and an increase in actual vapour pressure (e(a)), causing the decrease in ET0 from 1981 to 2000. WS was the largest contributing factor for the decrease in ET0 from 1981 to 2000 during spring, winter and annually, while R-s and e(a) were the largest negative contributors in summer and autumn, respectively. An increase in TA was responsible for the increase in ET0 in all seasons except winter and the annual scale in 2001-2017. The sensitivity analysis shows that ET0 was most sensitive to TA, and WS was the least sensitive variable. The trends of ET0 increased with elevation;we denote this as the elevation-dependence of ET0 changes. The elevation-dependence was also noted for the trends of WS and e(a), with higher elevations showing larger changes in WS and lower changes in e(a). Besides, the sensitivities of TA, R-s and e(a) decreased with elevation, while that of WS increased slightly with elevation. A comprehensive investigation into the trends of climatic drivers and their sensitivities revealed complex trends of the contributions of climatic variables on ET0 with elevation, with no uniform trend existed in seasons. The results will contribute to our understanding of the response of ET0 to climate change in a mountainous area, and provide a guideline for the water resources management under climate change. |
| 电子版国际标准刊号 | 1873-6424 |
| WOS关键词 | REFERENCE CROP EVAPOTRANSPIRATION ; ECOLOGICAL WATER REQUIREMENT ; RIVER-BASIN ; TIBETAN PLATEAU ; YELLOW-RIVER ; PAN EVAPORATION ; GROWING-SEASON ; WIND-SPEED ; TRENDS ; CHINA |
| 资助项目 | National Natural Science Foundation of China[41790431] ; Chinese Academy of Sciences[XDA23090201] |
| WOS研究方向 | Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000528537600032 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of China ; Chinese Academy of Sciences |
| 源URL | [http://ir.imde.ac.cn/handle/131551/50763]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Wang Genxu |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing, China; 2.State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu, China 3.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China; |
| 推荐引用方式 GB/T 7714 | Sun Juying,Wang Genxu,Sun Xiangyang,et al. Elevation-dependent changes in reference evapotranspiration due to climate change[J]. HYDROLOGICAL PROCESSES,2020:114082. |
| APA | Sun Juying,Wang Genxu,Sun Xiangyang,Lin Shan,Hu Zhaoyong,&Huang Kewei.(2020).Elevation-dependent changes in reference evapotranspiration due to climate change.HYDROLOGICAL PROCESSES,114082. |
| MLA | Sun Juying,et al."Elevation-dependent changes in reference evapotranspiration due to climate change".HYDROLOGICAL PROCESSES (2020):114082. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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