Effect on Surface Runoff Coefficient of Different Vegetation Types in Jinyun Mountain of Chongqing

ZHANG Hong-jiang; SUN Yan-hong; CHENG Yun; CHENG Jin-hua

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Effect on Surface Runoff Coefficient of Different Vegetation Types in Jinyun Mountain of Chongqing

更新时间：2024-11-07

- Effect on Surface Runoff Coefficient of Different Vegetation Types in Jinyun Mountain of Chongqing
- Vol. 20, Issue 6, Pages: 11-13(2006)
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  CLC： S157.1
- Published：2006
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ZHANG Hong-jiang, SUN Yan-hong, CHENG Yun, et al. Effect on Surface Runoff Coefficient of Different Vegetation Types in Jinyun Mountain of Chongqing[J]. 2006, 20(6): 11-13.
DOI：

ZHANG Hong-jiang, SUN Yan-hong, CHENG Yun, et al. Effect on Surface Runoff Coefficient of Different Vegetation Types in Jinyun Mountain of Chongqing[J]. 2006, 20(6): 11-13. DOI：

摘要

为探索影响地表径流系数因素的主次关系，利用灰色理论对重庆缙云山不同植被类型的草本层盖度、枯落物厚度、灌木层盖度和郁闭度影响地表径流的因素进行了灰关联分析。结果表明：所选取的植被状况参数对地表径流系数影响的大小顺序是：草本层盖度（0．7720）〉枯落物厚度（O．7445）〉灌木层盖度（0．6661）〉郁闭度（0．6142）；不同植被类型的植被状况对地表径流系数的影响，针阔混交林和常绿阔叶林的植被状况对地表径流系数的影响大，其灰关联度分别为0．6346和0．6185．而楠竹林对地表径流系数的影响最小，其灰关联度为0．5000。灰色关联法分析结果进一步证实了针阔混交林和常绿阔叶林具有良好的水文生态功能。

Abstract

To probe into the primary and secondary relation of factors influencing runoff coefficient

based on the grey system theory

a grey correlation analysis on factors which is herb layer coverage

litter layer thickness

shrub layer coverage and canopy density surface runoff was made

using the data measured in different vegetation types of Jinyun mountain

Chongqing.The results indicate that the effects on surface runoff coefficient by the parameters of vegetation status is herb layer coverage(0.772 0)> litter layer thickness(0.744 5) > shrub layer coverage(0.666 1)> canopy density(0.614 2).The mixed wood and broadleaf forest has better effect on surface runoff coefficient in different vegetation types

the grey correlation degree is 0.634 56

0.618 5 in turn.The bamboo forest has the smallest effect on surface runoff coefficient

the grey correlation degree is 0.500 0.It is prove the mixed wood and broadleaf forest has better hydrological and ecological function.

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