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[1]DONG Yu,HU Jiangling,WANG Jinjie,et al.Study of Temporal and Spatial Variation of the Reference Crop Evapotranspiration in Xinjiang Uygur Autonomous Region During the Period from 1961 to 2013[J].Research of Soil and Water Conservation,2016,23(03):304-308,313.

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Study of Temporal and Spatial Variation of the Reference Crop Evapotranspiration in Xinjiang Uygur Autonomous Region During the Period from 1961 to 2013

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 03 Page number: 304-308,313 Column: Public date: 2016-06-28

Title:: Study of Temporal and Spatial Variation of the Reference Crop Evapotranspiration in Xinjiang Uygur Autonomous Region During the Period from 1961 to 2013

Author(s):: DONG Yu^1,2, HU Jiangling^1,2, WANG Jinjie³, CHEN Xuegang^1,2; 1. Key Laboratory of Lake Environment and Resources in Arid Zone, Xinjiang Normal University, Urumqi 830054, China;
2. Institute of Geographic Science and Tourism, Xinjiang Normal University, Urumqi 830054, China;
3. College of Resources and Environment Science, Xinjiang University, Urumqi 830046, China

Keywords:: reference crop evapotranspiration; Penman-Monteith equation; temporal-spatial variability; Xinjiang Uygur Autonomous Region

CLC:: S161.4

DOI:: -

Abstract:: Study on characteristics of the spatial and temporal variation of reference crop evapotranspiration (ET₀) is a very important for hydrology and agriculture in Xinjiang Uygur Autonomous Region. Based on the meteorological data of 55 stations in Xinjiang during the period from 1961 to 2013, the annual and seasonal reference crop evapotranspiration was calculated using the Penman-Monteith model and the tempo-spatial change characteristics was analyzed. The multiple regression analysis was used to quantitatively analyse the dominant factor affecting the reference crop evapotranspiration. The results indicated that annual ET₀ presented the decreasing tendency, the tendency rate of annual ET₀ was -1.01 mm/a. ET₀ was higher before 1980s than after 1980s, and experienced the process from the decrease during 1990s, while it showed an increasing tendency since 2000. The decreasing tendency of ET₀ in summer and autumn was quite similar to that of annual ET₀, the decreasing tendency of ET₀ was not obvious in spring and winter. There was the marked geographical difference in ET₀ in different seasons. The wind speed and temperature were the dominant factors influencing ET₀. The wind speed is main reason for the annual, summer and autumn variations of the ET₀, temperature plays the major part in spring and winter variations of the ET₀.

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