摘要
本文采用固定小区径流法,对常绿阔叶林及其皆伐迹地草坡地表径流进行了对比研究,结果表明:常绿阔叶林年径流量为9.79毫米,占大气降水量0.5％;较迹地草坡减少径流56.3％。径流的季节变化以夏、春、秋、冬依次递减;其中4—8月为径流高峰期,径流量占全年62.4—96.5％。常绿阔叶林对暴雨以下雨量级的削减作用显著;而对持续性大暴雨以上雨量级的削减作用不明显。
The surface runoff of evergreen broad-leaved forests and the grassland of clean felling slash was observed with 'fixed area runoff' method.The annual amount of surface runoff of the evergreen broad-leaved forests was 9.79mm, being 0.5% of precipitation, and it is 56.3% less than that of the grass of clean felling slash, of which, the summer's is the most, next is the spring's, and the winter's is the least. The peak value occured in Apr. to Aug. which was 62.4%-96.5% of the annual amount.The effect of the evergreen broad-leaved forests on reducing the surface runoff under rainstorm was remarkable, but on that of over rainstorm was not remarkable.
出处
《广西植物》
CAS
CSCD
北大核心
1991年第3期247-253,共7页
Guihaia
关键词
常绿阔叶林
地表径流
evergreen broad-leaved forests
the grassland of clean felling slash
surface runoff
the amount of surface runoff
