【摘要】 黄土丘陵区油松林枯枝落叶层截留降雨量占同期大气降雨量的１０．０％。截留过程与蒸发过程均为一有限变化过程，它们相互影响，当某时段截留量与蒸发量相当，枯枝落叶层的含水量维持动态平衡。枯枝落叶层一次最大截留量３．１４ｍｍ，大于３ｍｍ的截留次数仅占降雨次数的３．４％。因截留而减少的降水量对林地水文的直接影响较小。更多还原

【Abstract】 The interception amount of litter layer in chinese pine forest in loess. hilly region makes up 10% of the atmospheric rainfall in the same time.Both interception process and evaporation proess are limited process in change and affected each other.When interception is equal to the evaporation in amount in a certain period of time, the water content of the litter is in dynamic equilibrium.The maximum interception amount in litter is 3.14mm,and the number of more than 3.0mm interception times only amounts to 3. 4% of all rainfall times. The decreasedprecipitation due to litter interception is of alittle effect on hydrological properties in woodland.更多还原