한국농림기상학회지, 제 9권 제3호(2007) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 9, No. 3, (2007), pp. 179~187
DOI: 10.5532/KJAFM.2007.9.3.179
ⓒ Author(s) 2014. CC Attribution 3.0 License.


기후대별 입지환경 인자에 의한 소나무류의 지위지수
추정식 및 적지 구명

신만용(1), 원형규(2), 이승우(2), 이윤영(2)
(1)국민대학교 산림자원학과, (2)국립산림과학원 임지보전과

(2007년 05월 11일 접수; 2007년 05월 22일 수락)

Site Index Equations and Estimation of Productive Areas for Major
Pine Species by Climatic Zones Using Environmental Factors

Man Yong Shin(1), Hyung Kyu Won(2), Seung Woo Lee(2), Yoon Young Lee(2)
(1)Department of Forst Resources, Kookmin University, Seoul 136-702, Korea
(2)Division of Forest Soil Conservation, Korea Forest Research Institute, Seoul 130-712, Korea

(Received May 11, 2007; Accepted May 22, 2007)

ABSTRACT
This study was conducted to develop site index equations for some pine species by climatic zones based on the relationships between site index and environmental factors. The selected pine species were Pinus densiflora Sieb. et. Zucc., Pinus densiflora for, erecta, and Pinus thunbergii. A total of 28 environmental factors were obtained from a digital forest site map. The influence of 28 environmental factors on site index was evaluated by multiple regression analysis. Four to eight environmental factors were selected in the final site index equation for pine species by climatic zones. The site index equations developed in this study was then verified by three evaluation statistics such as model’s estimation bias, model’s precision and mean square error type of measure. We concluded that the site index equations for the pine species by climatic Bones were capable of estimating forest site productivity. Based on these site index equations, the amount of productive areas for the species by climatic zones was estimated by applying the GIS technique to digital forest maps.

Keyword: Forest site productivity, Environmental and soil factors, Multiple regression, Evaluation statistics, Productive area

MAIN

적요

본 연구는 산림입지 자료를 이용하여 주요 소나무 수종의 기후대별 산림생산력을 추정하기 위해 수행하였다. 이를 위해 강원지방소나무, 중부지방소나무, 그리고 해송의 3개 소나무 수종을 대상으로 입지환경인자에 의한 기후대별 지위지수 추정식을 만들고, 적지 판정 기준에 따라 수종별 적지면적을 산출하였다. 기후대는 수종분포에 따라 온대북부, 온대중부, 온대남부, 그리고 난대의 4개 지역으로 구분하였다.
이를 위해 전국의 산림입지 자료를 기후대별·수종별로 분류한 후, 지위지수 추정식 산출에 필요한 추정자료와 통계 검증에 필요한 검증자료로 분류하였다. 산림입지 자료에 포함된 임령 및 수고에 근거하여 기준 임령을 30년으로 하는 기후대별·수종별 지위지수를 추정하였다. 이를 통해 입지환경 인자에 의한 기준임령 30년에서의 기후대별·수종별 지위지수 추정식을 도출하였으며, 검증자료를 사용하여 통계적 검증을 실시한 후 검증 결과에 따라 최종 기후대별·수종별 지위지수 추정식을 산출하였다. 본 연구에서 산출된 기후대별 소나무 수종의 지위지수 추정식은 4~8개의 입지환경 인자에 의해 산림생산력을 비교적 잘 추정하는 것으로 판명되었다.
이와 같은 방법으로 도출된 지위지수 추정식을 산림입지 자료에 적용하여 기후대별·수종별 산림생산력을 추정하고, 이에 근거하여 적지를 판정한 후 적지 면적을 산출하였다. 수종별 적지 면적은 강원지방소나무는 온대북부와 온대중부에서 약 24만ha로 추정되었으며,중부지방소나무는 전체 기후대에 걸쳐 약 49만ha가 적지인 것으로 분석되었다. 온대북부를 제외한 지역에 분포하고 있는 해송의 경우에도 전체 산림면적의 약 4%인 23만ha가 적지인 것으로 판명되었다.

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