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中文摘要：
利用青海湖区1958-2005年8个降水观测点月资料，整理出5条（A～E）年、季降水序列，应用气候诊断方法分析了降水的年代际变化及其突变特征．结果表明：5条序列年、季降水量的年际变化趋势大多数年代比较一致，并且E序列代表青海湖区降水量比较可靠．多数序列表现出20世纪60年代春季多雨，70年代秋季多雨，80年代春夏秋季多雨，90年代冬春夏季多雨的季节变化特征以及60-70年代少雨、80年代多雨和90年代少雨的年代际变化特征比较明显，多数序列年度和冬、夏季降水量增多的趋势与新疆、河西中西部、柴达木盆地相同．春季降水量在80年代初发生了一次气候突变，年度和其它季节没有发生突变．
英文摘要：
Based on monthly precipitation data of eight meteorological stations in 1958-2005 around the Qinghai Lake, five annual and seasonal precipitation series are calculated, and then the inter-dec adal change regulation of precipitation and its abrupt changing characteristics are revealed with the climatic diagnosis method. In this paper, the trend of five annual and seasonal precipitations appears almost synchronous, and E series is dependable representative of precipitation around the Qinghai Lake. The periods of spring in the 1960s, autumn in the 1970s, spring, summer and autumn in the 1980s and winter, spring and summer in the 1990s were precipitation-dominant. The inter-annual precipitation had prominent periods in the 1960s- 1970s, the 1980s and the 1990s. The inter-annual, winter and summer increasing trends of precipitation were similar to those in Xinjiang Region, Hexi Corridor, and Qaidam basin. Five precipitation series in spring had an abrupt change in the 1980s, but annual precipitation and precipitation in other seasons had not obvious change
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