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http://dx.doi.org/10.14578/jkfs.2021.110.4.665

Optimal Forest Management for Improving Economic and Public Functions in Mt.Gari Leading Forest Management Zone  

Kim, Dayoung (Department of Agriculture, Forestry and Bioresources, Seoul National University)
Han, Hee (Division of Forest Policy and Economics, National Institute of Forest Science)
Chung, Joosang (Department of Agriculture, Forestry and Bioresources, Seoul National University)
Publication Information
Journal of Korean Society of Forest Science / v.110, no.4, 2021 , pp. 665-677 More about this Journal
Abstract
This study analyzed the optimization method of forest management to enhance economic and public functions, as well as the interrelationship among timber production, carbon storage, and water conservation functions in Mt.Gari leading forest management zone. For these purposes, a forest management planning model was developed using Multi-Objective Linear Programming. The model had an objective function to maximize the total NPV (Net Present Value) of weighted timber production, carbon storage, water conservation, and constraints to limit the rate of change in timber production, percentage of each age-class and tree species area, percentage of conifers and broad-leaved trees area in each management zone, minimum timber production and timber sales amount. Based on the description of forest inventory and the comprehensive plan of Mt.Gari, we analyzed stand information and management constraints of the study area. We compared management alternatives using different weights in the objective function. Therefore, the total NPV was maximized in the alternative considering the three functions in equal proportion, rather than the alternatives of maximizing only one function. When all three functions were considered simultaneously, timber production offset the carbon storage and water conservation, and carbon storage and water conservation interacted synergistically. However, when considering only two of the three functions, all combinations of functions demonstrated tradeoffs with one other. Therefore, we discovered that by considering all three functions equally, rather than only one or two functions, the economic and public values of the study area can be maximized.
Keywords
optimal forest management plan; economic and public functions; multi-objective linear programming; net present value; Mt.Gari leading forest management zone;
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