Arid
DOI10.1016/j.jhydrol.2016.11.021
Spatiotemporal variability of reference evapotranspiration and contributing climatic factors in China during 1961-2013
Wang, Zhaoli1; Xie, Peiwei1; Lai, Chengguang1,2; Chen, Xiaohong2; Wu, Xushu1; Zeng, Zhaoyang1; Li, Jun1
通讯作者Lai, Chengguang
来源期刊JOURNAL OF HYDROLOGY
ISSN0022-1694
EISSN1879-2707
出版年2017
卷号544页码:97-108
英文摘要

Reference evapotranspiration (ETo) is an important parameter for characterization of the hydrological cycle, and it is also important for agricultural, environmental and other studies. The ETo for 4189 grid points in China from 1961 to 2013 was calculated in this study utilizing the FAO Penman-Monteith method (P-M) based on an updated high-resolution (0.5 degrees x 0.5 degrees) gridded dataset. Five climatic variables including wind speed (WS), sunlight duration (SD), relative humidity (RH), maximum daily temperature (Tm) and minimum daily temperature (Tn), were selected to identify the contribution to variability,of ETo. The temporal evolution and spatial distribution of each climatic variable was also investigated. Results indicate that (1) ETo distribution in China differed significantly both in seasonal and spatial scale in general, and annual ETo significantly decreased 6.84 mm/decade (P < 0.05); a turning point occurred in 1982 for the temporal variability of ETo and the fluctuation periods of 2.4- and 3.4-years existed in the ETo series. (2) WS was the most influential climatic variable related to ETo variability with relative contribution of 32.31%, followed by Tm (26.65%), SD (19.70%), RH (14.33%) and Tn (7.02%); significant declines (P < 0.05) of WS and SD were indicated in the decrease of ETo while the increase of Tm and Tn and the decrease of RH contributed to enhancing ETo. (3) Relative contributions of climatic variables to ETo were temporally unstable and varied considerably in the nine agricultural regions and the whole China; spatial distribution for relative contribution of various climatic variables showed significant diversity among various agricultural regions. The results have the potential to provide a reference for agricultural production and management in China. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Reference evapotranspiration Spatiotemporal variability Climate change Penman-Monteith method China
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000392767000009
WOS关键词CHANGING PAN EVAPORATION ; SURFACE WIND-SPEED ; POTENTIAL EVAPOTRANSPIRATION ; RIVER-BASIN ; SPATIAL-DISTRIBUTION ; ARID REGION ; TRENDS ; PRECIPITATION ; SENSITIVITY ; PROVINCE
WOS类目Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Engineering ; Geology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/200561
作者单位1.South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou 510641, Guangdong, Peoples R China;
2.Sun Yat Sen Univ, Ctr Water Resources & Environm, Guangzhou, Guangdong, Peoples R China
推荐引用方式
GB/T 7714
Wang, Zhaoli,Xie, Peiwei,Lai, Chengguang,et al. Spatiotemporal variability of reference evapotranspiration and contributing climatic factors in China during 1961-2013[J],2017,544:97-108.
APA Wang, Zhaoli.,Xie, Peiwei.,Lai, Chengguang.,Chen, Xiaohong.,Wu, Xushu.,...&Li, Jun.(2017).Spatiotemporal variability of reference evapotranspiration and contributing climatic factors in China during 1961-2013.JOURNAL OF HYDROLOGY,544,97-108.
MLA Wang, Zhaoli,et al."Spatiotemporal variability of reference evapotranspiration and contributing climatic factors in China during 1961-2013".JOURNAL OF HYDROLOGY 544(2017):97-108.
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