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《Journal of Anhui Agricultural Sciences》 2008-01
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Dynamic Analysis on the Climatic Change in Tibet Area for 40 Years

TAN Jun et al (College of Resources and Environment Science,Xinjiang University,Urumchi,Xinjiang 830046)  
The statistic was conducted on the daily average temperatures,daily highest and lowest temperatures,rainfall and sunlight hours of 26 basic sites and datum sites in Tibet area in 1961~2001.The distance average analysis on climatic factor change in Tibet area by trend regression method showed that there was increasing trend on the effective accumulative temperature equal to or higher than 10 ℃,the beginning and ending date and duration of effective accumulative temperature,daily highest and lowest temperatures,rainfall and sunlight hours.The periodicity analysis on their change trend by wavelet analysis indicated that the accumulative temperature had periodic change with 10-yearperiod,the rainfall had little periodic fluctuation with 3-year-period and the periodicity of sunlight change was not obvious.
【CateGory Index】: S162
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