Journal of the Korean Association of Geographic Information Studies (한국지리정보학회지)

The Korean Association of Geographic Information Studies (한국지리정보학회)
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Assessment of Flooding Vulnerability Based on GIS in Urban Area - Focused on Changwon City -

GIS 기반의 도시지역 침수 취약성 평가 - 창원시를 대상으로 -

  • Song, Bong-Geun (Bureau of Ecological Conservation Research, National Institute of Ecology) ;
  • Lee, Taek-Soon (Dept. of Environmental Engineering, Changwon National University) ;
  • Park, Kyung-Hun (Dept. of Environmental Engineering, Changwon National University)
  • 송봉근 (국립생태원 생태보전연구본부) ;
  • 이택순 (창원대학교 환경공학과) ;
  • 박경훈 (창원대학교 환경공학과)
  • Received : 2014.10.03
  • Accepted : 2014.12.10
  • Published : 2014.12.31
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Abstract

The purpose of this study is to evaluate flooding vulnerability considering spatial characteristics focused on Changwon-si, Gyeongsangnam-do. Assessment Factors are water cycle area ratio, surface runoff, and precipitation. And construction of assessment factors and vulnerability was analyzed by GIS program. Water cycle ratio and surface runoff were vulnerable in urban area. Precipitation was often distributed in agriculture of the northern region. Results of flooding vulnerability were low in agriculture and forest of the northern region. In contrast, urban area was high because there has covered impervious land cover. Analytical results of flooding vulnerability density using hotspot spatial cluster analysis were high in urban area. And these areas were situated in down stream so flooding were generated. Therefore, flooding vulnerability assessment of this study can help for selecting construction sites of pervious land cover and rainwater management facilities in urban and environmental planning.

본 연구는 경상남도 창원시를 대상으로 도시 침수문제를 개선하기 위해 GIS 분석을 활용하여 침수 취약성을 평가하였다. 평가 요인은 물순환 면적률과 표면 유출특성, 강우량 분포이며, GIS 프로그램을 활용하여 평가요인에 대한 정보 구축과 침수 취약성 평가를 분석하였다. 물순환 면적률과 표면 유출특성은 도시지역에서 취약하였다. 강우량 분포는 북쪽의 농촌지역에서 많았다. 침수 취약성 평가 결과 북쪽의 농업지역과 산림지역에서 낮았다. 반대로 도시지역은 불투수 재질로 포장되어 있어 취약성이 높았다. Hotspot 공간군집분석을 이용하여 침수 취약지역의 밀집도를 분석한 결과는 도시지역에서 매우 높은 밀집도를 보였다. 그리고 이들 지역은 대부분 하천의 하류에 위치해 있어 실제 침수가 빈번히 발생하는 것으로 확인되었다. 따라서 본 연구의 침수 취약성 평가는 도시 및 환경계획 차원에서 침수 피해를 예방하기 위해 투수성 포장재질의 조성과 빗물관리 시설의 설치위치를 선정하는데 효율적인 자료로 활용 가능할 것으로 판단된다.

Keywords

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