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[1]LUO Nana,Batur·Bake,WU Yanfeng.Correlation Analysis of Potential Evapotranspiration and Key Climatic Factors in Shihezi City[J].Research of Soil and Water Conservation,2016,23(05):251-255,260.

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Correlation Analysis of Potential Evapotranspiration and Key Climatic Factors in Shihezi City

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 05 Page number: 251-255,260 Column: Public date: 2016-10-28

Title:: Correlation Analysis of Potential Evapotranspiration and Key Climatic Factors in Shihezi City

Author(s):: LUO Nana, Batur·Bake, WU Yanfeng; College of Grassland and Environmental Science, Xinjiang Agricultural University, Urumqi 830052, China

Keywords:: reference crop evapotranspiration; Penman-Monteith; sensitivity analysis; contribution analysis

CLC:: S161.4;S311

DOI:: -

Abstract:: Based on data obtained from four meteorological stations during the period from 1961 to 2012 in Shihezi City, the reference evapotranspiration (ET₀) was calculated using Penman-Monteith model recommended by FAO. Then, the contribution of meteorological factors to ET₀ was investigated by sensitive analysis and contribution analysis. The results showed that average of ET₀ presented increasing trend (1.19 mm/a) during the past 52 years and mutated in 2004 in Shihezi City. The meteorological factors have different sensitivity coefficients and contribution rates to variability of ET₀. Among which, the contribution rate of average temperature is low, but sensitivity coefficients are the highest. Change in the average temperature becomes the largest contribution to ET₀. The sensitivity coefficients and contribution rate presented some differences before and after the mutation of meteorological factors. Contributions of the maximum temperature and the minimum temperature are relatively great after mutations, but the sensitivity coefficients are low, the average temperature as the leading factor increased significantly. The average temperature is the driving force of the variability of ET₀, especially more significant after mutation.

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