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2025 Vol.25, Issue 2 Preview Page

Research Article

Constraining Effects of Elevation on Inter-Regional Accessibility Improvements: A County-Level Spatial Analysis

지역 간 접근성 개선에 미치는 지형고도의 제약적 영향: 시군 단위 공간 분석

허성은1 · 김찬성2 · 박종철3†

SeongEun Heo1 ⋅ Chansung Kim2 ⋅ Jongchul Park3†

1국립공주대학교 지리학과 석사과정
2한국교통연구원 철도정책·경제연구팀 선임연구위원
3국립공주대학교 지리학과 부교수
1M.A. Student, Department of Geography, Kongju National University
2Senior Research Fellow, Division for Railway Policy and Economics, Korea Transport Institute
3Associate Professor, Department of Geography, Kongju National University
31 August 2025. pp. 35~50
PDF Citation
Abstract
This study analyzed the constraining effect of elevation on transportation accessibility, an aspect often overlooked in previous accessibility studies. Using data from 247 South Korean municipalities in 2005 and 2019, this study measured accessibility measured by a gravity model and conducted a sensitivity analysis of the distance-decay parameter, geographically weighted regression, short-distance (within 50 km) and long-distance (over 100 km) accessibility analyses, and Local Moran’s I to examine spatiotemporal changes and the influence of elevation. The results show that, despite nationwide accessibility improvements over time, regional disparities persist. The elevation had a significant negative effect on accessibility, with its constraining influence more evident in short-distance travel. In contrast, infrastructure investment contributed to improving accessibility in highland areas for long-distance travel. Furthermore, distinct High-High cluster regions for short- and long-distance accessibility showed elevation’s impact on improvement varies with physical distance. These findings highlight that elevation poses a persistent topographic constraint. This study provides valuable insights for addressing topographic disadvantages and foundational policies for balanced national development.
Keywords
Transportation
Gravity model
Inter-regional accessibility
Elevation
Constraint
본 연구는 기존 접근성 연구에서 간과된 지형고도의 제약 효과를 분석하였다. 2005년과 2019년 전국 247개 시군구를 대상으로 중력 모델을 이용하여 접근성을 측정하고, 거리조락계수의 민감도 분석, 지리적 가중 회귀분석, 단거리(50km 이하) 접근성 변화 분석, 장거리(100km 이상) 접근성 변화 분석, Local Moran’s I 분석을 통해 접근성의 시공간적 변화와 지형고도의 영향을 파악하였다. 분석 결과, 전국적으로 접근성이 향상되었으나 지역 간 격차는 뚜렷했다. 지형고도는 접근성에 유의미한 음의 영향을 미치고 있었으며, 그 제약 효과는 단거리 이동에서 더욱 두드러졌다. 반면 장거리 이동에서는 인프라 투자에 따른 고지대의 접근성 개선 가능성이 확인되었다. 또한, 단거리와 장거리 접근성의 High-High 클러스터 지역이 서로 상이하여, 지형고도가 물리적 거리에 따라 접근성 개선에 미치는 영향이 다름을 보여주었다. 이러한 결과는 오랜 시간 지형고도가 접근성 향상의 물리적 제약 조건이었음을 보여준다. 본 연구의 결과는 지형적 제약을 해소하고 균형 있는 국토 발전을 위한 기초 자료로 활용될 것으로 기대된다.
키워드
교통
중력 모델
지역 간 접근성
지형고도
제약 조건
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Information
  • Publisher :The Korean Cartographic Association
  • Publisher(Ko) :한국지도학회
  • Journal Title :Journal of the Korean Cartographic Association
  • Journal Title(Ko) :한국지도학회지
  • Volume : 25
  • No :2
  • Pages :35~50
  • DOI :https://doi.org/10.16879/jkca.2025.25.2.035
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