57年来本溪冷凉山区温度降水变化对蒸发的影响

Influence of the Evaporation on the Temperature and Precipitation in Benxi Cold Mountainous Area from 1953 to 2009

利用草河口1953～2009年月平均气温、降水量、小型蒸发资料,采用线性倾向率、Mann-Kendall(简称M-K)方法对蒸发量进行了趋势分析和突变检测。结果表明,冷凉山区年蒸发量呈现波动性增加趋势,其线性倾向率为30.16 mm/10a;四季的蒸发量均呈增加趋势;年蒸发量随着温度升高呈增加趋势,随着降水增加而呈减少趋势;蒸发最大值出现在5月份,最小值出现在1月份。

Based on the monthly average temperatures,precipitation and small evaporation data in Caohekou from 1953 to 2009,the method of liner tendency rate and Mann-Kendall(i.e.M-K) are used to conduct mutation test the of evaporation.The result shows that annual evaporation has a volatile increase tendency in cold mountainous area and the linear tendency rate is 30.16 mm/10a of linear tendency rate.The evaporation of four seasons tends to increase.The annual evaporation increases along with temperature increment.Th...