| 密云水库上游森林枯落物持水阻水特性研究(英文) |
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| 引用本文： | 秦永胜,余新晓,王示永.密云水库上游森林枯落物持水阻水特性研究(英文)[J].中国林学,2000(1). |
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| 作者姓名： | 秦永胜 余新晓 王示永 |
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| 作者单位： | 北京林业大学水土保持学院!北京100083 |
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| 摘 要： | 采用室内试验的方法 ,分不同坡度、不同单位面积生物量干重研究了三种森林植被枯落物 (油松、刺槐、荆条 )的持水阻水特性 .试验结果表明 ,相对于固定雨强的人工降雨过程 ,枯落物的截持降雨过程具有三阶段特征 :即吸水上升阶段、相对稳定的截持降雨阶段、降雨停止后的排水阶段 .在整个人工降雨过程中 ,枯落物的透过雨强明显小于控制雨强 .SPSS曲线回归分析表明三种枯落物糙率系数与单位面积枯落物干重显著相关且随着枯落物干重的增加而增大 ,并符合三次多项式关系
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| 关 键 词： | 枯落物 截留过程 糙率系数 密云水库 |
Water Interception and Retarding Characteristics of Forest Litters in the Upper Streams of Miyun Reservoir, Beijing\+* |
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| Qin Yongsheng\ Yu Xinxiao\ Wang Shiyong.Water Interception and Retarding Characteristics of Forest Litters in the Upper Streams of Miyun Reservoir, Beijing\+*[J].Forestry Studies in China,2000(1). |
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| Authors: | Qin Yongsheng\ Yu Xinxiao\ Wang Shiyong |
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| Institution: | Qin Yongsheng\ Yu Xinxiao\ Wang Shiyong |
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| Abstract: | Laboratory experiments were adopted to study the characteristics of three kinds of forest litters( Pinus tabulaeformis, Robinia pseudoacacia and Vitex negundo var. heterophylla )in intercepting rainfall and retarding surface runoff under different conditions. The results showed that forest litter interception process experienced three stages:firstly,rising and sopping stage;secondly, almost stable interception stage;thirdly, declining or drainage stage. Roughness coefficient of forest floor increased as litter weight of per unit area increased. Regressive analysis showed that the roughness coefficients of three kinds of forests litter significantly correlated with biomass weight of per unit area and fitted cubic multinomial. |
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| Keywords: | forest litter interception process roughness coefficient Miyun Reservoir in Beijing |
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