摘要
1982—1989年,采用定位对比对不同植被类型的地表径流量及动态进行了观测研究。结果表明:1.不同植被类型的地表径流差异很大,草坡>针叶林>阔叶林或针阔混交林;区内各植被类型的径流系数较小,平均为0.78％,但各类型间差异很大,可达57倍强。2.地表径流的季节动态,主要受降水的季节分配规律制约;而不同植被类型的地表径流量主要受植被的树冠群体或植物群体、枯枝落叶层和土壤层的综合效能所决定。这种综合效能呈现阔叶混交林或针阔混交林大于针叶林、针叶林大于草坡地的规律。文中还建立了不同植被类型地表径流深与林外降雨量的回归模型。
From 1982 to 1989, we have studied the surface runoff amount and dynamics of various vegetation types in Guangxi by location comparative method.The results indicated that 1. There are great differences of surface runoffs among vegetative types. The surface runoff of grasshill was greater than that of coniferous forest, which was greater than that of broad-leaved forest or the mixed forest of coniferous forest and broad-leaved forest. The surface runoff coefficients in various vegetation in Guangxi, which have great differences, were Small, averaging 0.78％. The maximum could be 57 times greater than the minimum. 2. Seasonal dynamics of surface runoff was mainly restricted by seasonal distribution of rainfall, and the surface runoff of various vegetations was mainly dependent on the comprehensive effects of crown or plant community, litter layer and soil layer. THe study also showed a pattern of the comprehensive effects that mixed broad-leaved forest or the mixed forest of coniferous forest and broad-leaved forest > grasshill. In this paper, a regression model of surface runoff of yarious vegetation types to precipitation outside of the forest was estabished.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1991年第5期490-497,共8页
Scientia Silvae Sinicae
关键词
植被类型
地表径流量
季节动态
Vegetation type
Surface runoff
Season dynamics
Analysis of correlation
