近40年来渭干河-库车河三角洲绿洲气候变化特征分析

利用库车、沙雅、新和气象站1961～2000年日照、气温、降水和蒸发观测资料,分析渭干河-库车河三角洲绿洲近40年来日照、气温、降水和蒸发量年际变化、季节变化及特征.结果显示:近40年来年均日照总体呈减少趋势,减少倾向率为31.64 h/10a,减少幅度从大到小依次为冬、夏、秋和春季;近40年来年均气温总体呈增加趋势,增长倾向率约0.17℃/10a,年内冬、秋两季呈上升趋势,春、夏两季呈下降趋势;近40年来年降水量总体呈增长趋势,增长倾向率约10.16 mm/10a,年内除秋季外,夏、春、冬季降水均呈增长趋势;近40年来年蒸发量总体呈减少趋势,减少倾向率约149 mm/10a,年内蒸发量减少幅度从大到小依次为夏、春、秋和冬季.

Climatic Change Characteristics of Kuqa River-Weigan River Delta Oasis During Last 40 Years

Using the statistics of sunshine time,temperature,precipitation and evaporation from 1961 to 2000 in Kuqa,Shaya and Xinhe meteorological stations,this paper analyze the annual and seasonal changes of these metrological factors in Kuqa River-Weigan River Delta Oasis during the last 40 years by employing the methods of regression analysis,trendline analysis and 5-year moving average analysis.The result shows that,(1) During the last 40 years,the sunshine time on this oasis has a trend of decreasing,and the de...