中文摘要：

根据柴达木盆地10个水文气象观测站点1956—2010年的逐月降水量资料，分析了柴达木盆地降水量变化趋势的时空特征，结果表明：柴达木盆地降水量主要经历了枯—枯—平—丰—平—丰的变化过程；柴达木盆地降水量上升趋势较显著，各站年降水量倾向率为1.26~25.50 mm/10 a；春、夏两季降水量的增加量大于秋、冬两季的，夏季降水量增加尤其明显；四季降水量占全年降水量的比例则是春季增大得较多，其他三季比例减小。

英文摘要：

According to the month by month data of ten observation stations from 1956 to 2010, this paper analyzed the spatial-temporal charaeteris- tics of precipitation change trend in the Qaidam Basin near 55 yrs. The results show that precipitation in the Qaidam Basin has passed through such a change process： dry-dry-normal-wet- normal-wet ; the precipitation increases significantly, the increate rate is about 1.26 -25.50 mm/10 a ; in- crement of precipitation in spring and summer is more than the increment in autumn and winter and this is especially obvious in summer. The pro- portion of spring precipitation to annual precipitation increases considerably, but this proportion in other seasons is decreased.