[1]LI Yao-ming,WANG Yu-jie,CHU Xiao-yuan,et al.Effects of the Rainfall Factors on Surface Runoff of Typical Forest Vegetations in Three Gorges Region[J].Research of Soil and Water Conservation,2009,16(04):244-249.
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Effects of the Rainfall Factors on Surface Runoff of Typical Forest Vegetations in Three Gorges Region
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 04
Page number:
244-249
Column:
Public date:
2009-08-20
- Title:
- Effects of the Rainfall Factors on Surface Runoff of Typical Forest Vegetations in Three Gorges Region
- CLC:
- S715
- DOI:
- -
- Abstract:
- Based on locating observation in Jinyun Mountain region during 2004-2006, the relation between the rainfall factors and surface runoff of 4 typical forest vegetation types including coniferbroad leaved mixed forest, evergreen broad-leaved forest, phyllostachy pubescens forest and scrub was analyzed. Results showed the relation between surface runoff and rainfall, the maximum intensity of rainfall in 10 min is extremely significant, and rainfall intensity was significant, rainfall duration and rainfall of 3 days ago was not significant. The relation between surface runoff and rainfall is quadratic equation, and relation between surface runoff and the maximum intensity of rainfall in 10 min, rainfall intensity is linear function. Different types of forest vegetation showed up different response to the rainfall, in light rain conditions, each type of vegetation is good for rainfall storage, but in heavy rain conditions, every type of vegetation is much different in hydrological function, evergreen broad-leaved forest is the best and phyllostachy pubescens forest is the worst. By using principal component analysis, the factors that have restrictive impact on surface runoff are rainfall intensity comprehensive factor, rainfall duration and rainfall comprehensive factor and antecedent rainfall comprehensive factor. With selecting main constituent as variable making models, the degree of fitting is high. Using these models can carry out an accurate calculation and forecasting of surface runoff.
- References:
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