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

The Korean Association of Geographic Information Studies (한국지리정보학회)
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Application of InVEST Water Yield Model for Assessing Forest Water Provisioning Ecosystem Service

산림의 수자원 공급 생태계서비스 평가를 위한 InVEST Water Yield 모형의 적용

  • Song, Chol-Ho (Dept. of Environmental Science and Ecological Engineering, Korea University) ;
  • Lee, Woo-Kyun (Dept. of Environmental Science and Ecological Engineering, Korea University) ;
  • Choi, Hyun-Ah (Dept. of Environmental Science and Ecological Engineering, Korea University) ;
  • Jeon, Seong-Woo (Dept. of Environmental Science and Ecological Engineering, Korea University) ;
  • Kim, Jae-Uk (Environmental Information Center, Korea Environment Institute) ;
  • Kim, Joon-Soon (Dept. of Forest Management, Kangwon National University) ;
  • Kim, Jung-Taek (Dept. of Forest Management, Kangwon National University)
  • 송철호 (고려대학교 환경생태공학과) ;
  • 이우균 (고려대학교 환경생태공학과) ;
  • 최현아 (고려대학교 환경생태공학과) ;
  • 전성우 (고려대학교 환경생태공학과) ;
  • 김재욱 (한국환경정책.평가연구원 국토환경정보센터) ;
  • 김준순 (강원대학교 산림경영학과) ;
  • 김정택 (강원대학교 산림경영학과)
  • Received : 2014.12.07
  • Accepted : 2015.02.24
  • Published : 2015.03.31
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Abstract

InVEST Water Yield model developed by Natural Capital Project was applied for South Korea to assess domestic forest ecosystem's water provisioning services. The InVEST Water Yield model required 8 input dataset, including six spatial map data and two derived by coefficients. By running the model with relatively easy acquired and modified data, the result of domestic forest ecosystem's water provisioning services was 9,409,622,083 ton using the standard of the year 2011. The result showed similar patterns and distribution of rainfall in 2011, but showed difference when compared with existing researches spatially driven in nationwide statistical analysis results. This difference is assumed to occur with different model mechanism in spatial implementation and statistical analysis. So given that the model is currently still developing, applications should be taken on qualitative perspectives rather than on quantitative perspectives. Additionally, for advancing the application of InVEST water yield model, quantification of suitable input data and comparison using multi-modeling is required.

본 연구에서는 Natural Capital Project에서 개발 된 InVEST Water Yield 모형을 통해 국내 산림의 수자원 공급 서비스를 평가하고 적용성을 검토 해 보았다. InVEST Water Yield 모형은 총 8가지의 필수 입력자료를 요구하며, 그 중 6가지는 공간자료로, 2가지는 계수로 설정되었다. 국내에서 쉽게 활용 및 보정 가능한 자료를 이용한 모형 구동 결과, 우리나라 산림생태계의 수자원 공급서비스 총량인 수원함량은 2011년을 기준으로 9,409,622,083톤으로 나타났다. 이 결과는 해당년도 강우량의 분포와 비슷한 경향을 보였으며, 대상지에서 공간분석을 통해 이뤄진 기존 연구 및 통계적으로 분석된 전국 규모의 연구 결과와 비교 시 차이를 보였다. 이러한 차이는 모형의 기작 특성에 따른 통계적 방식과 공간적 구현 방식에서의 차이로 인해 발생하는 것으로 파악되었다. 따라서 InVEST 모형의 활용은 현 시점에도 개발이 지속되고 있는 상황임을 감안해야 하며, 정량적인 평가보다는 정성적인 평가에 중점을 두어야 할 것이다. 또한 향후 모형의 고도화를 위해서는 우리나라에 맞는 입력자료의 작성 및 멀티모델링을 통한 비교를 통해 정확성을 향상시켜야 한다.

Keywords

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