阿克苏河流域近30a气候变化特征

Features of Climate Change in Akesu River Basin During Past 30 Years

利用阿克苏河流域近30a来的气象资料,对影响该流域气候变化的温度、降水气象要素进行序列分析,得出如下结论:①阿克苏河流域近30a来气温在逐渐上升,但增温的幅度比较缓慢,年平均温度的倾向率为0.136℃.(10a)-1。最高气温、最低气温都有增温的趋势,其中最低气温增温明显。②流域内年降水量以5.62mm.(10a-)1趋势上升,增湿的速度较大。③运用SPSS软件对降水量、温度进行相关分析,发现降水与温度呈负相关,最低气温与年平均气温的相关系数达到0.504,通过了0.01的显著性水平检验,表明最低气温对年平均气温的影响较大。

This paper analyzes the relatively meteorological data of Akesu river basin 1971--2000, the results are as follows： ①The temperature raises gradually, however, the speed is slowly, the long--term warming rate of mean temperature is 0. 136℃ per ten years. The max--temperature and rain--temperature also have ascending trend. ② The long--term wetting rate of mean precipitation is 5.62ram per ten years, it shows that the speed of wetting is prominent. ③Temperature and precipitation is negative correlated test with SPSS software. The correlation quotiety of min -- temperature and mean temperature is 0. 504, which shows that min--temperature effect the change of annual mean temperature notable.