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利用 1 95 5 - 1 997年陕西渭北旱塬地区 5个县、市的年平均气温、年降水量和季平均气温、季降水量资料 ,对近 43年来陕西渭北地区降水量与气温间的相关性进行了分析研究 .结果表明 ,本区全年、夏季、春季降水量与全年及夏季、春季的平均气温之间有极显著的相关性 ,温度越高 ,降水量越少 ,二者之间的关系可以用二次多项式回归方程量化表示 .冬季降水量与冬季平均气温之间有显著相关性 ,降水随温度升高呈指数式减少
Using the annual average temperature, annual precipitation, seasonal mean temperature and seasonal precipitation data of 5 counties and cities in Weibei arid plain area of Shaanxi from 1995 to 1997, we analyzed the correlation between precipitation and temperature in Shaanxi province The results show that there is a significant correlation between annual precipitation in summer and spring and annual mean temperature in summer and spring, the higher the temperature is, the less precipitation is, The relationship between the two can be quantified by quadratic polynomial regression equation.The winter precipitation is significantly correlated with the winter mean temperature, and the precipitation decreases exponentially with increasing temperature