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对北京九龙山油松林、侧柏林、阴坡灌木林、阳坡灌木林的林冠层、枯落物层及土壤层对降雨的调蓄功能进行了研究，结果表明：四种不同林地的林冠截持率为２２％～３２％，大暴雨下的截持率为７％～１０％；枯落物层的有效调蓄为０．４６～２．４２ｍｍ；５０ｃｍ土层的快速、慢速和变化调蓄量分别为３５～４８ｍｍ；５４～４８ｍｍ，２８～５２ｍｍ；四种林地调蓄功能的顺序从大到小为油松林、阴坡灌木林、阳坡灌木林、侧柏林。
The function of rainfall regulation on the canopy layer, the litter layer and the soil layer of Pinus tabulaeformis, Platycladus orientalis, shady shrub forest and sunny slope shrub forest in Jiulongshan Mountains in Beijing was studied. The results showed that the canopy cuttings of four different forests The holding rate is 22% ~ 32%, and the cut-off rate is 7% ~ 10% under heavy rainstorm. The effective storage of litter is 0.46 ~ 2.42mm. The fast, slow and change of 50cm soil layer The reserves are 35 ~ 48mm, 54 ~ 48mm and 28 ~ 52mm, respectively. The sequence of four kinds of woodland storage and management functions are as follows: Pinus tabulaeformis forest, shady shrub forest, sunny slope shrub forest and Platycladus orientalis forest.