新疆艾比湖流域近40年来气候变化特征分析

Analysis on Characteristics of Climate Changes in Aibi Lake Area in Xinjiang in Recent 40 Years

本文通过艾比湖流域分布的5个气象台站有关气温、降水、蒸发的多年数据,分析了近40a来艾比湖流域的气候变化特征。结果表明:近40a来年平均气温及春、夏、秋、冬四季气温均呈上升趋势,其中以冬季最为明显;年平均降水量及春、夏、冬季降水自90年代后出现增加趋势;年及四季蒸发量呈上升趋势,但90年代的年及各季蒸发量较80年代呈减少趋势,其中以夏季最为明显。该地区近10多年来气候发生了明显的变化,主要表现在气温升高,降水增多,蒸发量却有减少的趋势。

In this paper, the climate change trend in Aibi Lake area was studied through analysis on the measured data of 5 weather stations in the study area from 1961 to 2001. The results show that the annual mean and the four seasonal air temperature are increasing. Among them,this tendency is more significant in winter. The annual mean precipitation and precipitation in spring,summer and winter have been increased since 90s; annual evaporation and seasonal evaporation increased, but comparatively, it appears to decrease in 90s annual and seasonal, especially,in the summer. Climate has changed obviously in 1990s, the air temperature has raised and precipitation has increased, Nevertheless.the ability of evanoration has weakened.