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A Study on the Peak Discharge and Soil Loss Variation due to the New Town Development - In the Case of Namak New Town Development Area -  

Woo, Chang-Ho (Dept. of Landscape Architecture, Mokpo National University)
Cho, Nam-Yul (Graduate School, Mokpo National University)
Publication Information
Journal of Environmental Impact Assessment / v.11, no.4, 2002 , pp. 271-280 More about this Journal
Abstract
The purpose of this study is to explore the hydrological impacts and soil loss variation due to the land use change of Namak New Town development area. The analysis of hydrological effects and soil loss variation has been carried out using GIS in this study. In order to estimate the peak runoff volume, the Rational Method which is the most popular technique to predict runoff amounts is used. To estimate the soil loss in the study area, Universal Soil Loss Equation(USLE), which is one of the most comprehensive and useful technique to predict soil erosion is adopted. The result of this study has shown that the peak runoff volume and the total soil loss increase according to the land use change. The peak runoff volume and the total soil loss have been increased about 2 times and about 48 times more than that of pre development. The increasing of the peak runoff volume can be effective erosion, flooding and so on. A careful city planning is the first essential step to minimize the environmental impacts and to construct the ecological city.
Keywords
GIS; Rational method; Peak runoff volume; USLE; Soil loss;
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