<正>根据林冠截留降雨的物理现象，借鉴流域蓄满产流理论建立了一个林冠截留降雨新模型。结合两片林分的实测资料。介绍了该模型参数的确定方法，并且对模型进行了有效性验证。结果表明：计算值与观测值吻合，表明该模型可揭示林冠截留降雨的基本特征，如果已知模型参数，可以用于林冠截留降雨的预测计算。

Soil waterstable aggregate contents and chemical properties of bamboo (Phyllostachys heterocycla) and broadleaved mixed forest stands were studied in Jiangxi province. Researched stands can be divided into Type A(bamboo stands), Type B(5%~15% broadleaf trees), Type C(155%~25% broadleaf trees), Type D(25%~35% broadleaf trees) and Type E(35%~45% broadleaf trees). The results revealed that Type A had the lowest soil water-stable aggregate content, but highest soil structure destroy rate(average 37.27%), Type C had the lowest soil structure destroy rate(average 12.33%). The average contents of soil organic matter, total N, hydrolyzed N, available P, total K were highest in the soil of Type C stands, Type D had highest average contents of soil total P, available K, Type A had lowest average contents of soil total P, available K. It suggests that suitable mixed rate of bamboo and broadleaf trees is good for the maintenance of soil fertility.