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西江坪常绿阔叶林地表径流的研究
黄承标;   
广西农学院林学分院 南宁 530001
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。
关键词:  常绿阔叶林  皆伐迹地草坡  地表径流  径流量  
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