Analysis of forest management strategies in Cote d'Ivoire: An economic model
Ayemou, Afla Odile
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https://hdl.handle.net/2142/23497
Description
Title
Analysis of forest management strategies in Cote d'Ivoire: An economic model
Author(s)
Ayemou, Afla Odile
Issue Date
1989
Doctoral Committee Chair(s)
Schmidt, Stephen C.
Department of Study
Agriculture, Forestry and Wildlife
Economics, Agricultural
Discipline
Agriculture, Forestry and Wildlife
Economics, Agricultural
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Agriculture, Forestry and Wildlife
Economics, Agricultural
Language
eng
Abstract
The Ivoirien forest industry has been characterized by a total lack of regulation, planning, and difficulty of reconciling timber removal and replenishment. One of the objectives of this study is to assess the long run timber supply from the natural forests in Cote d'Ivoire and the possibility of incorporating silvicultural activities into forest regulation. The current practice of charging arbitrary fees on volume of timber harvested and then channeling it through a separate management agency has proved inadequate in raising enough funds for management activities. Now the cost of management (reforestation, harvest control, etc..) has been made part of the cost structure of the logging firms.
A multiperiod linear programming model is used to optimize the net present value of timber harvested from the forests by a selected group of logging firms on a regional basis subject to available timber stock and species, the market demand, labor, prices, and other constraints. The model is then used to analyse various management scenarios including reforestation starting from a base case depicting current conditions in the industry.
The results of the base indicate that the industry does generate a high net present value at 5 percent discount rate over 25 years planning horizon. Several management scenarios aimed at controlling the timber stock ranging from ending inventory constraint where a specified amount of the stock is required to remain at the end of the planning horizon to harvest flow constraint where the volume harvested each period is controlled are analyzed. The results indicate that harvest flow constraint spreads harvest evenly while ending inventory constraint does not restrict periodic harvest.
The other important issue in the study is reforestation. While the timber supply from the natural forest is very uncertain in the future, forest plantations appear to be a secure means of future supply. A 348,750 hectares of natural forests produce 1.4 million M$\sp3$ over 25 years, whereas a 187,682 hectares of plantations could have produced 15.2 million M$\sb3$ of timber the same period still with a positive net present value and the added guarantee of a long term supply. The reforestation model with the current felling fees demonstrates the inadequacy of those fees to finance plantations.
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