鄂尔多斯盆地降水量分布特征分析

Distribution characters of precipitation in Ordos Basin

应用鄂尔多斯盆地5个代表站1981-2000降水量资料,对该地区降水分布进行分析,分析结果表明:降水特征由西北向东南递增,降水量年内分配比较集中,连续最大4个月占全年降水量的75%以上,连续最小4个月降水量占全年5%以下,盆地北边最大月降水量趋势基本保持平稳,盆地南边最大月降水量变化趋势与年降水量变化趋势基本吻合。

We analyzed the precipitation distribution in Ordos Basin using five representation station from 1980 to 2000. The result indicated the precipitation in the.basin increased from the northwest to southwest, precipitation was concentrated comparatively, precipitation of the four max and rain continuous monthes took up 75 % and 5 % separately. The max monthly precipitation of the north basin is relative stable. The tendency of the max monthy precipitation and annual precipitation was basic uniform