{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/23497"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/23497","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Analysis of forest management strategies in Cote d'Ivoire: An economic model","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.","abstract_html":"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.","abstract_has_math":false,"creators":["Ayemou, Afla Odile"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Agriculture, Forestry and Wildlife","degree_department":null,"school":null,"contributors":["Schmidt, Stephen C."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":null,"date_issued":"10000-01-01","date_published":"10000-01-01","updated_at":"2026-07-22T22:25:22Z","subjects":["Agriculture, Forestry and Wildlife","Economics, Agricultural"],"languages":["eng"],"rights":["Copyright 1989 Ayemou, Afla Odile"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI8924761","(UMI)AAI8924761"],"render_values":[{"text":"AAI8924761","href":null,"code":true},{"text":"(UMI)AAI8924761","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/23497","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Schmidt, Stephen C."]},{"key":"dc:creator","label":"Author","values":["Ayemou, Afla Odile"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["10000-01-01","1989","2011-05-07T14:16:22Z"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Agriculture, Forestry and Wildlife","Economics, Agricultural"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Agriculture, Forestry and Wildlife","Economics, Agricultural"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1989 Ayemou, Afla Odile"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI8924761","(UMI)AAI8924761","http://hdl.handle.net/2142/23497"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["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.","Made available in DSpace on 2011-05-07T14:16:22Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 8924761.pdf: 5840171 bytes, checksum: 72b12ee622b8f85c70f98f100ba3a2ea (MD5) Previous issue date: 1989","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:04:53Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:31:02-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Analysis of forest management strategies in Cote d'Ivoire: An economic model"]}]}],"canonical_facts":{"dc:contributor":["Schmidt, Stephen C."],"dc:creator":["Ayemou, Afla Odile"],"dc:date":["10000-01-01","1989","2011-05-07T14:16:22Z"],"dc:description":["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.","Made available in DSpace on 2011-05-07T14:16:22Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 8924761.pdf: 5840171 bytes, checksum: 72b12ee622b8f85c70f98f100ba3a2ea (MD5) Previous issue date: 1989","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:04:53Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:31:02-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["AAI8924761","(UMI)AAI8924761","http://hdl.handle.net/2142/23497"],"dc:language":["eng"],"dc:rights":["Copyright 1989 Ayemou, Afla Odile"],"dc:subject":["Agriculture, Forestry and Wildlife","Economics, Agricultural"],"dc:title":["Analysis of forest management strategies in Cote d'Ivoire: An economic model"],"dc:type":["text"],"thesis:degree_discipline":["Agriculture, Forestry and Wildlife","Economics, Agricultural"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:22Z"}