Karin Öhman

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Mathematical programming and computers have been used for several decades to solve complex and long term forest management planning problems. The ever increasing demand on the forest ecosystem to produce wood and other goods and services poses a corresponding demand on a forest decision support system. As a response to meet new requirements the development(More)
Changing and competing land use, where we make use of a growing share of resources, potentially undermines the capacity of forests to provide multiple functions such as timber, biodiversity, recreation and pasture lands. The governance challenge is thus to manage trade-offs between human needs and, at the same time, maintain the capacities of forests to(More)
Forest planning in Sweden today translates not only into planning of timber production, but also for the provision of other functions and services. Multi-criteria decision analysis (MCDA) methods provide a way to take also non-monetary values into account in planning. The purpose of this study was to gain experience on how to use a forest decision support(More)
Half of the productive forest area in Sweden is owned by small-scale private forest owners. However, there is a lack of comprehensive information that would allow categorizing small-scale private forest owners according to their management strategy. In this study, we surveyed small-scale private forest owners in Sweden to determine the proportions who(More)
Traditionally, the main focus of forest management planning has been the production of timber. However, forests are today regarded as a source for a wide range of commodities and services, such as biodiversity and recreation to name a few. This results in planning situations that often involve several stakeholders or social groups where a multiplicity of(More)
Johanna Lundström*, Karin Öhman, Karin Perhans, Mikael Rönnqvist and Lena Gustafsson Department of Ecology, Swedish University of Agricultural Sciences, PO Box 7044, SE-750 07 Uppsala, Sweden; Department of Forest Resource Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden, Department of Finance and Management Science, Norwegian(More)
In this study, we assessed the effect of a diverse ownership structure with different management strategies within and between owner categories in long-term projections of economic, ecological and social forest sustainability indicators, representing important ecosystem services, for two contrasting Swedish municipalities. This was done by comparing two(More)
Swedish moose (Alces alces) management has over the years transformed from a situation similar to what Hardin (1968) defined as a tragedy of the commons – i.e. where open access and unrestricted demands lead to overexploitation – into a situation characterized by an abundance of moose. While high numbers of moose are preferred by hunters, they damage(More)
Many forest planning situations are complex; multiple criteria of different natures have to be considered and several stakeholders or social groups may be involved. An approach that is increasingly used in these complex situations is the combination of multiple criteria decision analysis (MCDA) and participatory planning. A crucial part of MCDA processes(More)
Öhman, K. 2001. Forest planning with consideration to spatial relationships. Doctor’s dissertation. ISSN 1401-6230, ISBN 91-576-6082-4. This thesis deals with approaches that can be used to consider spatial relationships in long term forest planning. In the thesis the optimization approach is used, i.e. variables in some way describing the spatial(More)