重庆地区森林水文作用的初步研究  

A Preliminary Study on the Forest Hydrology Effect in Chongqing Area, Southwestern China

作　　者：马良清 张毓锐 

机构地区：[1]重庆市林业局,重庆市农机水电局

出　　处：《北京林业大学学报》1998年第1期14-19,共6页Journal of Beijing Forestry University

摘　　要：对重庆地区森林水文作用初步研究表明：该地区常绿阔叶林下黄棕壤和腐殖质黄壤，其非毛管孔隙持水量一般都达到或超过多年最大日降水量（１４０～２３０ｍｍ），而马尾松林下的黄壤和柏木林下的紫色土则一般低于多年最大日降水量．径流的洪枯比值、径流的Ｃｖ值、泥沙含量等随森林覆盖率的增大而减小，径流系数则与森林覆盖率成正相关．说明该地区森林对降水、径流的月际分布以及泥沙含量都有明显的调节作用．The preliminary research on the forest hydrology effect in the Chongqing area reveals that:in the yellowbrown soil and the humus yellow soil under the evergreen broadleaved forests, the water retention capability of noncapillary pore generally equals to or surpass the maximum daily precipitaiton (around 140 to 230 mm); but in the yellow soil under the Pinus massonia forest and the purple soil under the Cupressus funebris forest, the water retention is lower than the maximum daily precipitation over the years.The ratio of flood to low runoff , the Cv value of runoff and the sediment decreased with the rising of the forest coverage. The runoff coefficient has the positive corelation with the forest cover rate. These results show that the forest plays an important regulation role on the monthly distribution of precipitation, the monthly distribution of runoff and the sediment amount.

关 键 词：森林水文 水源涵养林 径流系数 重庆 

分 类 号：S715.7[农业科学—林学]