三峡库区森林流域林地的地表糙率系数  

Surface roughness coefficient of forest watershed in the Three Gorges Region.

作　　者：杨海龙[1] 朱金兆[1] 齐实[1] 朱国平[1] 

机构地区：[1]北京林业大学水土保持学院

出　　处：《北京林业大学学报》2005年第1期38-41,共4页Journal of Beijing Forestry University

基　　金："十五"国家攻关专题 (2 0 0 1BA5 10B0 2 0 1) .

摘　　要：2 0 0 2— 2 0 0 3年期间 ,作者选择三峡库区响水溪流域 1 1块具有典型代表性的林地 ,在野外小区径流实验基础上 ,通过曼宁公式 ,对地表糙率系数进行了定量研究 .结果表明 ,地表糙率系数介于 0 0 1 82～ 0 2 5 75之间 ,其中板栗林地小区糙率系数值最小 ,杉木、马尾松、阔叶林混交林地小区糙率系数值最大 .大小依次排序为杉木、马尾松、阔叶林混交林 >尖杉、马尾松、阔叶林混交林 >石栎纯林 >柳杉纯林 >马尾松、阔叶林混交林 >柳杉、楠竹混交林>尖杉纯林 >荒草地 >楠竹林 >杉木纯林 >板栗林 .The surface roughness coefficients of 11 typical stands were quantified by using the Manning Formula for field experiments during the year 2002 and 2003 in Xiangshuixi watershed, Three Gorges Region, at Jiangjin City of Chongqing Municipality. The results show that the values of the surface roughness coefficient vary from 0.0182 to 0.2575. The minimum value is in the Castanea mollissima Bl. forest and the maximum value in the mixed forest of Cunninghamia lanceolata with Pinus massoniana and broad-leaved trees. The order of surface roughness coefficient of 11 stands from high to low is as follows: mixed forest of Cunninghamia lanceolata with Pinus massoniana and broad-leaved trees, mixed forest of Cephalotaxus fortunei Hook with Pinus massoniana and broad-leaved trees, pure forest of Lithocarpus glaber (Thunb.) Nakai, pure forest of Cryptpomeria fortunei Hooibrenk, mixed forest of Pinus massoniana and broad-leaved trees, mixed forest of C. fortunei Hooibrenk and Phyllostachys pubescens Maze, pure forest of Cephalotaxus fortunei Hook., wild land, Phyllostachys pubescens Maze forest, pure forest of Cunninghamia lanceolata and finally pure forest of Castanea mollissima Bl.

关 键 词：森林流域 枯落物 地表糙率系数 渗透 

分 类 号：S715.3[农业科学—林学]