渭河谷地的气候干暖化与未来趋势

Drying and Warming of Climate and It's Tendency in the Weihe River Basin *

根据渭河谷地代表测站３２ａ气象实测资料，应用线性回归与趋势分析方法，分析了该区冬春变暖、秋春变干的干暖化特征．即５城市平均年增温０．００６４℃，年均减少降水０．１２４８ｍｍ；气候干暖化，尤其以冬春季增温明显，春秋季变干显著；预测该地区未来５ａ的气候仍以干暖化为特点，预计到２００１ａ可能增温０．２℃，年降水减少３０ｍｍ．

Based on observations of some typical meteorological stations of 32 years,the characteristis of warming and drying of climate that it becomes warm in winter and spring and becomes dry in autumn and spring is analysed with the relation analysis of linear regression and tendency.The result shows that the temperature is becoming high with a rate of 0 0064℃ and the precipitation is reducing about 0 1248mm average year in the five cities.And the main process of warming and drying of climate is that during winter and spring the temperature is becoming high and during autumn and spring the precipitation reducing obviously.According to the forecasting study,the climate will be drying and warming continuously within coming five years.And from now to 2001,it will have increased 0 2℃ in temperature and have reduced about 30mm in precipitation.