【摘要】 艾比湖为西北内陆封闭湖泊,湖泊面积变化反映了区域气候环境的变化。通过艾比湖历史时期及近期湖面波动特征研究,对近期湖泊的演化趋势进行了分析。研究认为,近50年来艾比湖湖面经历了两次大幅度变化,20世纪60年代湖泊面积的大幅度萎缩与21世纪初湖泊面积的大范围扩张。近期艾比湖湖面扩展与流域降水增加密切相关,而20世纪60年代湖泊面积的萎缩主要受流域农业灌溉耗水等人类活动的影响。从气候历史演化的角度(没有人类活动作用)分析,类似目前的气候条件,艾比湖湖面以较稳定地保持在1000～1500km2内较为客观。更多还原

【Abstract】 The Aibi Lake is a closed lake in inland of Northwest China. The enlarging and shrinking of surface area of the lake reflect the variations of the regional climate and environment. According to the historical and recent characteristics of fluctuation of lake surface of the Aibi Lake, the trend of the recent lake evolution was studied. The results showed that there were two steep changes in the lake surface during the last 50 years, i.e., an extreme shrinking in the 1960s and a large-scale enlarging in 2000.The recent enlarging of the surface area is closely related to the precipitation in the catchment and the shrinking is primarily due to the human activities such as water demand on the agricultural irrigating in the catchment. On the basis of the historical evolvement of the climate (not including human activities), the surface area of the lake steadily fluctuates between 1 000 and 1 500 km~2 in the weather condition like these days.更多还原