阿勒泰地区的降水变化特征

The Character of Precipitation Change in Aletai Area

通过对阿勒泰地区近43年来降水资料的分析和研究,得出阿勒泰地区43年来降水变化的规律,并从时空角度揭示出阿勒泰降水量的变化存在区域性。结果表明:从80年代开始降水呈现上升趋势,90年代达最大;降水量的增多主要表现在冬季,其次是秋季和夏季;山麓丘陵、萨吾尔山区是降水量增加趋势较快的地区,平原地区的降水量增加趋势较慢。

The rule of the precipitation change of Aletai area were derived from the d ata in last 43years.Based on the spatial and temporal distribution o f precipitation conc tuded its area c haracters.Results that the precipi tation was increasing since 1980' s and come to maxima in 1990' s.There were increments in winter ,s econdary in summer and autumn,more increasing in mountains area compare wit h plains.