In time of acreage configuration structure, this paper proves that it is feasible that the closing of karst drainage basin is reflected through the infiltration of precipitation that is calculated by even pervasive and the modulus of low flow.

• 在分析流域面积形态结构时 ,利用了流域多年平均降水入渗模数推求其枯水发生前月的降水入渗量 ,并证明用枯水发生前月的降水入渗量与枯水发生月月均径流模数来反映流域枯水期的闭合性是可行的。