Journal of the Korean association of regional geographers (한국지역지리학회지)
- Volume 10 Issue 1
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- Pages.192-205
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- 2004
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- 1226-7392(pISSN)
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- 2586-1468(eISSN)
The Change of Water Balance due to Urbanization in Gwangju River Basin
도시화에 수반되는 광주천 유역의 물수지 변화
- Yang, Hea-Kun (Honam Culture Research Center, Chonnam National Univ.) ;
- Kim, Jong-Il (Gwangju Jeonnam Development Institute)
- Published : 2004.03.30
Abstract
The purpose of this paper is to analyze the factors, which have influence upon changes of hydrological environment in time series, and evaluate water balance changes caused by urbanization. The results of the analysis and evaluation are as follow: At first, the river runoff at Gwangju River Basin keep base flow of river by storage capacity recharged in June to September and show peak in August and minimum flow in May. The groundwater recharge by urbanization accounted for 46.1% of rainfall at early-urban stage, and decreased to 36.5% and 29.9% in the 1960's and the 1990's respectively, and is likely to decrease to 27.8% in the 2010's. On the other hand, the overland flow was 9.6% of rainfall in the 1960's and 16.2% in the 1990's, and is likely to increase to 18.3% in the 2010's. When such a phenomenon is kept continuously, distorted water balance shall be worsened to create not only frequent occurrence of urban flood but also decreased base flow of Gwangju River to accelerate dry stream phenomenon. The time series study on urban redevelopment and environment maintenance describes distorted phenomenon to supply the information for nature-friendly land use, and examines relations between human activities and natural environment.
수문환경 변화에 영향을 미치는 요인을 시계열적으로 분석하고, 도시화에 수반되는 물수지 변화를 평가하였다. 그 결과를 요약하면, 다음과 같이 기술할 수 있다. 먼저, 광주천 유역의 하천유출 특성은 6월
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