Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Mapping Species-Specific Optimal Plantation Sites Based on Environmental Variables in Namwon City, Korea

환경요인을 이용한 남원시의 적지적수도 제작

  • Moon, Ga Hyun (Department of Forest, Environment, and System, Kookmin University) ;
  • Kim, Yong Suk (Division of Forest Soil and Water Conservation, Korea Forest Research Institute) ;
  • Lim, Joo Hoon (Division of Forest Soil and Water Conservation, Korea Forest Research Institute) ;
  • Shin, Man Yong (Department of Forest, Environment, and System, Kookmin University)
  • 문가현 (국민대학교 산림환경시스템학과) ;
  • 김용석 (국립산림과학원 산림수토보전과) ;
  • 임주훈 (국립산림과학원 산림수토보전과) ;
  • 신만용 (국민대학교 산림환경시스템학과)
  • Received : 2015.03.31
  • Accepted : 2015.06.17
  • Published : 2015.06.30
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Abstract

This study was conducted to develop a large scale map of species-specific plantation sites based on selected environmental variables such as topography, soil, and climatic factors in Namwon city. Site index equations by tree species were first regressed to 27 environmental variables that could influence the productivity of forest sites using digital forest site maps, digital climate maps, and the 5th National Forest Inventory data. Site index equations by tree species were all evaluated to estimate site productivity using 4-5 environmental variables, and the models' reliability was confirmed based on evaluation statistics. The determination coefficients of site index equations by species ranged from 0.42 to 0.76. With the site index equations, the site conditions appropriate for productive sites by species were considered to assess spatial distribution of productive areas for each species. The final map for optimal plantation in Namwon city was produced based on both site index equations and site conditions appropriate for productive sites by each species using GIS technique. Field survey was conducted to evaluate the suitability of selected species on the map of species-specific plantation sites. Results showed that the plantation map provides relatively reasonable spatial distribution of productive areas for selected species. It was revealed, however, that the sites evaluated as 'not suitable' for any tree species should be revised and complemented with additional information, especially with the site conditions appropriate for productive sites by species of interest. The outcomes of this study are expected to provide information for making customized species-specific plantation maps.

본 연구는 전라북도 남원시의 맞춤형 조림지도인 적지적수도를 제작하기 위해 수행하였다. 이를 위해 남원시에 분포하는 주요 수종별 지위지수 추정식을 개발하고, 수종별로 적지에 적합한 입지조건을 반영한 생육범위를 고려하여 각 수종의 적지분포를 공간적으로 평가하였다. 남원시에 분포하는 주요 8개 수종별 지위지수 추정식은 각각 4-5개의 환경인자 조합이 관여하는 것으로 분석되었으며, 전체 27개의 환경인자 중에서 15개가 수종별 지위지수 추정에 사용되었다. 특히 사면위치($X_7$)와 경사형태($X_8$), B층 건습도($X_{11}$), 연최저 기온($X_{15}$), 온량지수($X_{16}$) 비생장기간 5개월 동안의 총강수량($X_{23}$), 월평균 상대습도($X_{24}$), 그리고 생장기간 초기 3개월 동안의 월평균 상대습도($X_{25}$)가 수종별 지위지수 추정식에 많이 포함되는 것으로 판명되었다. 이상과 같은 방법으로 남원시의 적지적수도를 제작한 후, 적합성 검증을 위해 현지 확인 조사를 수행하였다. 현지 확인 결과 본 연구에서 제작한 적지적수도는 사용 가능한 자료의 한계에도 불구하고 수종별 적지분포를 비교적 무난하게 표현하고 있는 것으로 평가되었다. 하지만 부적지로 평가된 일부 지역의 경우 수정 및 보완이 필요한 것으로 나타났다.

Keywords

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