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Spatiotemporal Variations of Reference Evapotranspiration and Its Determining Climatic Factors in the Taihang Mountains, China

文献类型：期刊论文

作者Kang, Tingting1,3; Li, Zeng2; Gao, Yanchun1
刊名WATER
出版日期2021-11-01
卷号13期号:21页码:22
关键词reference evapotranspiration multiple breakpoints sensitivity analysis vertical gradients dominant climatic factor mountainous area
DOI10.3390/w13213145
通讯作者Gao, Yanchun(gaoyanc@igsnrr.ac.cn)
英文摘要Reference evapotranspiration (ETo) is an effective measure of atmospheric water demand of the land surface. In-depth investigations of the relationship between ETo and primary climatic factors can facilitate the adaptable agriculture and optimize water management, especially in the ecologically fragile Taihang Mountains (THM). This work assessed the spatiotemporal dynamics of ETo and its driving climatic factors from 1973 to 2016 in THM. Results showed: (1) Annual ETo slightly increased during 1973-2016; relative humidity (RH) decreased more slowly, the temperature increased more rapidly, and wind speed (WS) decreased more rapidly at higher elevation than those at lower elevations; (2) two breakpoints occurred in ETo series at 1990 and 1997, and an "evaporation paradox " existed in 1973-1990; (3) ETo at higher elevations had greater sensitivity to changes in RH and lower sensitivity to changes in Tmax and WS. Sensitivity of ETo to minimum air temperature (Tmin) at middle elevations was lowest among three elevation bands; (4) RH and sunshine duration (SD) were the dominant climatic factors of ETo for most periods and stations. This study helps us understand the impact of climate change on ETo in mountainous areas and confirms reference evapotranspiration in high-elevation areas is particularly sensitive to climate change.

WOS关键词REFERENCE CROP EVAPOTRANSPIRATION ; YELLOW-RIVER BASIN ; POTENTIAL EVAPOTRANSPIRATION ; PAN EVAPORATION ; PENMAN-MONTEITH ; LOESS PLATEAU ; SENSITIVITY COEFFICIENTS ; VEGETATION RESTORATION ; METEOROLOGICAL FACTORS ; ELEVATIONAL GRADIENTS
资助项目National Key Project for Basic Research (973)[2015CB452705] ; National Key Project for Research and Development[2016YFC0501605]
WOS研究方向Environmental Sciences & Ecology ; Water Resources
语种英语
出版者MDPI
WOS记录号WOS:000718534600001
资助机构National Key Project for Basic Research (973) ; National Key Project for Research and Development
源URL[http://ir.igsnrr.ac.cn/handle/311030/167880]  
专题中国科学院地理科学与资源研究所
通讯作者Gao, Yanchun
作者单位1.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Guangdong Univ Technol, Key Lab City Cluster Environm Safety & Green Dev, Inst Environm & Ecol Engn, Guangzhou 510006, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Kang, Tingting,Li, Zeng,Gao, Yanchun. Spatiotemporal Variations of Reference Evapotranspiration and Its Determining Climatic Factors in the Taihang Mountains, China[J]. WATER,2021,13(21):22.
APA Kang, Tingting,Li, Zeng,&Gao, Yanchun.(2021).Spatiotemporal Variations of Reference Evapotranspiration and Its Determining Climatic Factors in the Taihang Mountains, China.WATER,13(21),22.
MLA Kang, Tingting,et al."Spatiotemporal Variations of Reference Evapotranspiration and Its Determining Climatic Factors in the Taihang Mountains, China".WATER 13.21(2021):22.

入库方式： OAI收割

来源：地理科学与资源研究所

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