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2026 Vol.13, Issue 1 Preview Page

Original Article

Evaluation of Water Yield in Jirisan National Park Using the InVEST

InVEST 모형을 이용한 지라산국립공원의 담수공급량 평가

Jong-Seo Won1
,
Hyungjin Cho2
,
Seungnam Jin3
,
Jin Jang4*
원 종서1
,
조 형진2
,
진 승남3
,
장 진4*
1Junior Researcher, Corp. ECOnGEO, Incheon 22329, Korea
2President, Corp. ECOnGEO, Incheon 22329, Korea
3Senior Researcher, Corp. ECOnGEO, Incheon 22329, Korea
4Senior Researcher, National Park Research Institute, Korea National Park Service, Wonju 26441, Korea
1(주)에코앤지오 선임연구원
2(주)에코앤지오 대표이사
3(주)에코앤지오 책임연구원
4국립공원공단 국립공원연구원 책임연구원
*Corresponding Author
31 March 2026. pp. 75-82
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Abstract

This study quantifies freshwater supply ecosystem services in Jirisan National Park and analyzes their spatial patterns using the InVEST Water Yield model. The model was parameterized using spatial datasets including precipitation, land cover, soil depth, and a Digital Elevation Model (DEM). Reference evapotranspiration (ET0) was sourced from the Global Aridity Index and Potential Evapotranspiration Climate Database v2 (WorldClim-based). The Z parameter was set to 22, derived from the regional average of 110 annual precipitation days (≥1 mm). Analysis revealed a total annual water yield of 521.74 million m3, equating to an estimated economic value of 27.5 billion KRW based on the 2025 K-water dam water tariff (52.7 KRW/m3). Water yield demonstrated a positive correlation with both elevation (r=0.330) and precipitation (r=0.314). Notably, non-forest areas (1296.3 mm) exhibited a higher mean water yield per unit area than forest areas (1083.3 mm). Analysis of Special-Purpose Districts indicated that the ‘Nature conservation district in a park’ provided the highest mean water yield per unit area (1,145.7 mm). However, the ‘Natural environment district in a park’ contributed the largest total water volume (333.06 million m3) due to its extensive area. These findings provide foundational data to support policies for water resource conservation and ecosystem service management within the national park.

Keywords
Economic valuation
Ecosystem services
Freshwater supply
InVEST
Jirisan National Park

본 연구는 InVEST Water Yield 모델을 사용하여 지리산 국립공원의 담수공급 생태계서비스를 정량적으로 평가하고, 그 공간적 분포 특성을 분석하는 것을 목적으로 한다. 기준증발산량(ET0) 자료는 WorldClim 기반의 Global Aridity Index and Potential Evapotranspiration Climate Database v2를 사용하였으며, 강수량, 토지피복, 토양 깊이, 수치표고모델(DEM) 등의 공간 데이터를 모델에 적용하였다. 강수분포 매개변수(Z)는 국내 연간 총 강수일수(1mm 이상) 평균(110일)을 기반으로 InVEST 매뉴얼에 따라 22로 설정하였다. 분석 결과, 지리산 국립공원의 연간 총 담수공급량은 약 5억 2,174만 m3로 산출되었으며, 이는 2025년 한국수자원공사 댐용수 단가(52.7원/m3) 기준 약 275억 원의 경제적 가치에 해당한다. 담수공급량은 고도(r=0.330) 및 강수량(r=0.314)과 양의 상관관계를 보였으며, 토지피복별로는 산림(1083.3 mm)보다 비산림(1296.3 mm) 지역의 평균 담수공급량이 높게 나타났다. 용도지구별 분석에서는 공원자연보존지구가 단위 면적당 평균 담수공급량(1,145.7 mm)이 가장 높았으나, 총 담수공급량은 면적이 가장 넓은 공원자연환경지구(약 3억 3,306만 m3)가 가장 많았다. 본 연구의 결과는 국립공원의 수자원 보전 및 생태계서비스 관리 정책을 위한 기초 자료로 활용될 수 있다.

키워드
경제적 가치
생태계서비스
담수공급
InVEST
지리산 국립공원
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 13
  • No :1
  • Pages :75-82
  • Received Date : 2025-11-05
  • Revised Date : 2026-03-29
  • Accepted Date : 2026-03-29
  • DOI :https://doi.org/10.17820/eri.2026.13.1.075
Journal Informaiton Ecology and Resilient Infrastructure Ecology and Resilient Infrastructure
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