伊犁河流域降水和气温的若干特征

SOME CHARACTERISTICS OF PRECIPITATION AND AIR TEMPERATURE IN THE YILI RIVER BASIN

本文详细分析了天山山区伊犁河流域中低山区降水和气温的变化规律。结果表明，夏季中低山带的降水和气温与其对应高度的关系较好，且梯度值较大；不同年份降水量越大，降水梯度值亦越大。在此基础上结合邻近地区高山区观测资料，获取了伊犁河流域高山区的降水和气温。

The paper analyzes in detail the varied pattern on precipitation and air temperature in the selected low and high mountainous areas in the Yili River basin, Tianshan Mountains.The results show that the precipitation and air temperature in the low and high mountainous areas are well related to elevation in summer, and their gradient values are high. The more the precipitation is, the higher the gradient value is for various years. Temperature lapse rate is big in summer and small in winter. Precipitation gradient is different from the different tributaries in the basin, among which the Kunes River has the biggest precipitation gradient and the Tekes River has the smallest one. Precipitation gradient is also different from different seasons, in which it is the smallest and negative in winter, the correlation is not so good, and it is the biggest and positive in summer, the correlation is good. Monthly precipitation amount and gradient are different from different years. Based on the above results and the measured data in the adjacent alpine area of the Yili River basin are calculated in the study.