지방자치단체 경사도 규제 기준과 지형 특성의 비교 분석 : 조례 기준과 DEM 기반 지형자료를 중심으로 = Spatial Characteristics of Local Government Slope Regulation Standards : Comparing Ordinance Criteria with DEM-Based Terrain Data

국문 초록 (Abstract)

본 연구는 전국 시·군·구의 「도시·군계획조례」를 전수 조사하여 경사도 규제 기준의 수치적 특성과 지역별 차이를 분석하고, 각 지자체의 기준값을 수치표고모형(DEM, Digital Elevation Model)에서 산출한 평균 경사값과 비교하였다. 나아가 기준 경사값을 초과하는 토지의 면적 비율과 개발가용지 중 기준 초과 면적의 비중을 정량적으로 산정하여, 경사도 규제가 입지 가능성과개발 여건에 미치는 영향을 평가하였다. 이를 통해 지역별 지형특성과 경사도 규제 기준 간 정합성을 검토하고, 경사도 규제의공간적 영향을 평가하고자 하였다.

다국어 초록 (Multilingual Abstract)

This study investigated the entire set of slope regulation standards stipulated in the Ordinance on Urban or Gun Planning of local governments nationwide and compared them with digital elevation model (DEM)-based topographic data to analyze the conformity between institutional standards and topographic reality. The practical constraints of slope regulation on potentially developable spaces were quantitatively evaluated, targeting development-use areas excluding urban and water areas. As a result of the analysis, the slope standards were set at 10° to 30° for each local government, and even with the same standard, the spatial impact of the regulation varied significantly depending on the region's topographic characteristics. It was found that in flat areas, the effect of slope regulation on development sites is limited. In contrast, in areas with mountainous terrain, a large share of development sites are included in the regulation. This study suggests that gradient regulation should be designed differently to reflect the region's topographic characteristics and spatial structure rather than a uniform development restriction standard, and provides basic data for setting reasonable gradient standards in the future.