Title: Effects of Forest Variety on Runoff and Sediment in the Three-Gorge Region of Yangtze River
Abstract: In accordance with the characteristics of forest variety,precipitation,runoff and sediment movement of Three-Gorge region of Yangtze River,the properties of runoff and sediment movement is studied by the method of watershed comparison with itself,based on the observations on forest,runoff,sediment,etc of Wuduhe watershed in Three-Gorge region of Yangtze River.The influence of forest variety on annual runoff,scanty runoff,ratio of peak discharge to low flow and annual sediment delivery modulus is studied.The results show that annual runoff will increase by 3.75 mm and scanty runoff will decrease by 4.61 mm if forest cover decreases by 1%,and annual runoff will increase by 3.75 mm and scanty runoff will decrease by 4.87 mm if forest volume decreases by 10 000 m3.At the same time,ratio of peak discharge to low flow will increase by 0.83 and annual sediment delivery modulus will increase by 67.5 t/(km2·a) if forest cover decreases by 1%,and ratio of peak discharge to low flow will increase by 0.88 and annual sediment delivery modulus will increase by 71.3 t/(km2·a) if forest volume decreases by 10 000 m3.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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Cited By Count: 4
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