中文摘要：

利用岱海湖区的气象观测资料,对岱海湖区的气候变化特征进行了初步分析。结果表明：近43年来,岱海湖区气温呈现出明显的升高趋势,其中20世纪90年代上升幅度为最大,高出多年平均水平0.63℃;而湖区的降水量和蒸发量则呈现出减少趋势,其变化倾向率分别为-9.64mm/10 a和-12.98 mm/10 a;结合大气干旱指数的计算结果,对岱海湖区的气候变化特征进行了阶段性划分,其中20世纪60年代和70年代为相对冷湿期,80年代是冷湿向暖干发展的过渡期,而90年代以后湖区则呈现出明显的暖干化趋势。

英文摘要：

Climatic change were analyzed by using the observed meteorological data in the region of lake Daihai in 1960 -2002. The results indicated that temperature showed an obvious trend of increase in recent 43 years, especially in 1990 -2002, the increasing trend of temperature was extremely obvious, and the average temperature from1990 to 2002 was higher than that from 1960 to 2002, with an increase amplitude of 0.63℃ ; but the precipitation and evaporation had a decreasing trend, and its changing rate was by -9.64mm/10a and -12.98 mm/10a respectively. Based on analysis of main climatic factors and results of calculation about atmospheric drought index, the changing period of 1960 -2002 was divided into several stages in the region of lake Daihai. The stage from 1960s to 1970s was relative cold -wet period; however, there was an obvious warm-dry trend from 1990 to 2002; and 1980s was a transitional stage from cold -wet period to warm -dry period.