A Model for the Forest Sector

Dynamic linear programming models have been extensively used at IIASA to examine the long-term consequences of various economic policies and scenarios. Applications have included energy supply prospects, alternative paths for regional development, and the planned improvement of agricultural production. This report develops the methodology further and presents an application to the study of forestry and the forest-based industries; the Finnish forestry sector is used as an illustrative example

Strategic Planning of the Forest Sector: Summary Report of a Nordic Meeting

Strategic planning of the forest sector in Nordic countries focuses on the major long-term problems and issues which are or will be confronting forestry and the forest industry. In this paper these problems and issues are described. Examples of strategic planning and the use of models and computers in the forest industry are given. It can be concluded that current forest sector modeling is of major importance for strategic planning of the forest industry in Nordic countries

Systems Analysis for the Forest Sector

This article is an overview of systems analysis in forestry and forest industries. The issues covered range from forest management and forest industrial strategy to international trade in forest products and structural change in the forest sector worldwide. The methodologies discussed include mathematical models of economies, statistics, and operations research

A Model for the Forest Sector

This paper describes a dynamic linear programming model for studying long-range development alternatives of forestry and forest based industries at a national and regional level. The Finnish forest sector is used as an object of implementation and for numerical examples. Our model is comprised of two subsystems, the forestry and the industrial subsystem, which are linked to each other through the wood supply. The forestry submodel describes the development of the volume and age distribution of different tree species within the nation or its subregions. In the industrial submodel we consider various production activities, such as saw mill industry, panel industry, pulp and paper industry, as well as further processing of primary products. For a single product, alternative technologies may be employed. Thus, the production process is described by a small Leontief model with substitution. Besides supply of wood and demand of wood products, production is restricted through labor availability, production capacity, and financial resources. The production activities are grouped into financial units and the investments are made within the financial resources of such units. Objective functions related to GNP, balance of payments, employment, wage income, stumpage earnings, and industrial profit have been formulated. Terminal conditions have been proposed to be determined through an optimal solution of a stationary model for the whole forest sector. The structure of the integrated forestry-forest industry model is given in the canonical form of dynamic linear programs for which special solution techniques may be employed. Two versions of the Finnish forest sector models have been implemented for the interactive mathematical programming system called SESAME, and a few numerical runs have been presented to illustrate possible use of the model

Systems Analysis in Forestry and Forest Industries

The purpose of this book is to present a variety of articles revealing the state of the art of applications of systems analysis techniques to problems of the forest sector. Such applications cover a vast range of issues in forestry and the forest industry. They include the dynamics of the forest ecosystem, optimal forest management, the roundwood market, forest industrial strategy, regional and national forest sector policy as well as international trade in forest products. Forest industrial applications at mill level, such as optimal paper trimming, cutting, and production scheduling, are however, excluded

Forest Sector Models

These proceedings of the NORTH AMERICAN CONFERENCE ON FOREST SECTOR MODELS represent not only individual contributions of some 40 researchers, but also significant progress of an unique international effort in forestry research: The Forest Sector Project of the International Institute for Applied Systems Analysis (IIASA). The project is a joint effort of researchers in over 15 nations to cooperatively develop models of their forest sectors that can be linked together to form an international model useful for projecting the development of resources, the progress of industry, and the flows of trade worldwide. Such linkage of models has never been attempted in forestry