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Changing characteristics of potential evapotranspiration,air temperature and precipitation in Ebinur Lake basin from 1957 to 2013

Reziw anguli Maimaitiyiming;YANG Jianjun;LIU Wei;School of Resource and Environmental Science,Xinjiang University;Key Laboratory of Oasis Ecology of Ministry of Education;  
Meteorological data(average atmosphere pressure,average temperature,average maximum temperature,average minimum temperature,average relative humidity,average wind speed,percentage of sunshine and precipitation) from 1957- 2013 were collected from six weather stations in Ebinur Lake basin.Monthly and annual potential evapotranspiration were calculated by Penman-Monteith model.The linear regression,cumulative anomaly and Mann-Kendall test were used to analyze the characteristics of potential evapotranspiration,temperature and precipitation changes.The results show that the annual average potential evapotranspiration had decreased with a rate of 25.05 mm ·(10a)~(-1) during 1957-2013;the average potential evapotranspiration during the later seven years decreased 77.36 mm as compared with that in the former 50 years.Annual average temperature had increased with a rate of 0.33 ℃ ·(10a)~(-1) during 1957-2013;the average temperature during the later seven years increased 1.0 ℃ as compared with that in the former 50 years.Annual precipitation had increased too,with an increasing rate of 7.97 mm ·(10a)~(-1),and average precipitation during the later seven years increased 32.45 mm as compared with that in the former 50 years.
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