Weibull 직경분포모델을 이용한 편백림의 경험적 임분수확표 개발 (Development of Empirical Stand Yield Table by Using Weibull Diameter Distribution Model for Chamaecyparis obtusa Forests)

서지정보

· 발행기관 : 한국환경과학회
· 수록지 정보 : 한국환경과학회지 / 33권 / 12호 / 873 ~ 881페이지
· 저자명 : 정수영, 이광수, 송정은, 홍성희, 김우용, 강희산, 손영모

초록

This study was conducted to produce an empirical stand yield table for Chamaecyparis obtusa forests in Korea. The data used in the analysis were based on the National Forest Inventory (NFI) data to reflect actual forest growth, and few already collected data were used. The stand yield table was based on the Weibull diameter distribution model, which was applied to present the number of trees and volume distribution according to site index, age, and diameter class. All types of growth equations, such as basal area, breast at height diameter, and height, used in this model showed a high fitness index (0.45– 0.93) within a significance level of 5%. Chapman-Richards (C-R) and Schumacher models were applied to the estimation equation of the site index, indicating Chamaecyparis obtusa forest productivity; the C-R model with excellent statistical values was selected as the optimal equation. In addition, tree-stem curves and parameters developed by the National Institute of Forest Science were applied to estimate stand volume, and the empirical stand yield table for Chamaecyparis obtusa forest was derived using these growth equations and analysis procedures. The newly developed stand yield table showed a relatively high volume when compared with the old stand yield table. This result was considered to be attributable to the tree-stem curve equation, unlike previous results. The newly developed stand yield table will provide basic information, such as forest management, carbon storage, and absorption calculations, for Chamaecyparis obtusa forests in the future, thus contributing to forest policy planning.

영어초록

This study was conducted to produce an empirical stand yield table for Chamaecyparis obtusa forests in Korea. The data used in the analysis were based on the National Forest Inventory (NFI) data to reflect actual forest growth, and few already collected data were used. The stand yield table was based on the Weibull diameter distribution model, which was applied to present the number of trees and volume distribution according to site index, age, and diameter class. All types of growth equations, such as basal area, breast at height diameter, and height, used in this model showed a high fitness index (0.45– 0.93) within a significance level of 5%. Chapman-Richards (C-R) and Schumacher models were applied to the estimation equation of the site index, indicating Chamaecyparis obtusa forest productivity; the C-R model with excellent statistical values was selected as the optimal equation. In addition, tree-stem curves and parameters developed by the National Institute of Forest Science were applied to estimate stand volume, and the empirical stand yield table for Chamaecyparis obtusa forest was derived using these growth equations and analysis procedures. The newly developed stand yield table showed a relatively high volume when compared with the old stand yield table. This result was considered to be attributable to the tree-stem curve equation, unlike previous results. The newly developed stand yield table will provide basic information, such as forest management, carbon storage, and absorption calculations, for Chamaecyparis obtusa forests in the future, thus contributing to forest policy planning.

참고자료

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