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[1]Jiayinaguli·Wozhatihan,Batur·Bake,WU Yanfeng,et al.Spatiotemporal Characteristics of Potential Evapotranspiration in Tajikistan in the Past 100 Years[J].Research of Soil and Water Conservation,2015,22(01):280-285,291.

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Spatiotemporal Characteristics of Potential Evapotranspiration in Tajikistan in the Past 100 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 01 Page number: 280-285,291 Column: Public date: 2015-02-28

Title:: Spatiotemporal Characteristics of Potential Evapotranspiration in Tajikistan in the Past 100 Years

Author(s):: Jiayinaguli·Wozhatihan¹, Batur·Bake¹, WU Yanfeng¹, Rasulov H H²; 1. College of Grassland and Environmental Science, Xinjiang Agricultural University, Urumqi 830052, China;
2. Faculty of Hydrometeorology, Tajik Agrarian University, Dushanbe 734003, Tajikistan

Keywords:: potential evapotranspiration; spatial and temporal variation; Mann-Kendall method; wavelet analysis; Republic of Tajikistan

CLC:: P333.1

DOI:: -

Abstract:: Based on the monthly potential evapotranspiration data during 1901 to 2011 in Republic of Tajikistan, the spatiotemporal characteristics of precipitation variation were analyzed by using the linear trend analysis, wavelet analysis, Mann-Kendall method, and the Kriging interpolation. The results showed that: (1) from the temporal change perspective, the annual potential evapotranspiration declined significantly during the past 100 years, with a rate of -1.25 mm/10 a, peaked in the summer and decreased to a minimum in the winter. The potential evapotranspiration in spring and summer and annual potential evapotranspiration presented abrupt change except for fall and winter; the annual potential evapotranspiration and the potential evapotranspiration of spring, summer, autumn and winter had a 24 years, 24 years, 30 years, 7 years and 21 years periodicity, respectively. (2) from the spatial change perspective, the annual potential evapotranspiration had a decreasing trend from west to the east of Tajikistan, ranging from 653.19 to 1 324.12 mm.The potential evapotranspiration in 1901—1930 increased significantly in most regions of Tajikistan and the potential evapotranspiration 1991—2011 decreased significantly in most areas.

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