A Canopy Interception Model and Its Application for Apple Tree in Semi-humid Ares

In this paper,the relationship between the canopy interception of apple tree,forest canopy peneration,trunk stem flow and rainfall was investigated based on the data of the surb of Beijing.The result showed that ①as significant correlation among forest canopy interception of apple,penetration flow,trunk flow and rainfall.Canopy interception showed a power function correlation with rainfall and a linear correlation with linear,respectively.When the rainfall is greater than 1 mm,the penetration will appear,and when the rainfall is greater than 1.5 mm,the trunk flow will appear.The average rainfall intercept rate by canopy of apple tree is 18.0%,the saturation interception of canopy is 7.5 mm.②Through the comparison between new model and representative canopy interception model.Obtain a new suitable model of canopy interception of apple tree.