<正>利用统计回归方法，将林网区与少林区和浅水面无林区进行分组分析，在对比过程中消除气候特征量自身随时空的变化和部分非线性因素，综合分析林网化的区域性气候效应，得出：防护林体系可以显著地减小区域内的风速，明显地减少区域内的蒸发量，且防护林在有叶期和无叶期对区域性的气候影响程度是不同的。

In this paper,the effects of protective shelterbelt system on regional climate are revealed by using the method of statistic regression,in which the differences of climatic factors in their yearly variation and spacial distribution,and somnonlinear factors are excluded.The results indicate that protective shelter system can evidently reduce regional wind velocity and evaporation,and its effects are different in the falling and growing Periods of leaves.