An analysis of the state of the forest and some management alternatives for the Östad estate : carried out by students at the Swedish University of Agricultural Sciences as part of a secondary course in Forest Management Planning 1997
This report contains strategic and tactical plans for Ostad foundations forest estate. The plans are produced by means of the Forest Management Planning Package (Jonsson et al., 1993, see Remarks) and Arc View, a Geographical Information System (GIS). The Ostad estate is located 40 kilometers east of Gothenburg at lake Mjorn (58° N, 12°30'E). It comprises a total area of about 4600 hectares, of which roughly 3500 hectares are productive forest land. The dominant soil type is sandy moraine. The average site quality is moderate for southern Sweden conditions (the site quality is 8. 1 m3/ha/yr). More detailed data about the forest is found in chapter 4. The landscape has high scenic values, and is at many places broken by hills, steep cliffs and lakes. Large parts of the forest were intensively cut during the 1950-1960' sand efforts have been made during the last decades to increase the stocking. Close to the manor is a peninsula (about 160 hectares large), named Djurgarden, with former pasture land which now is afforested, to a large extent by valuable hardwood. The Ostad estate and foundation has an interesting history. From 1774, when the estate was donated by a wealthy merchant, N. Sahlgren, and until the end of Second World War, it served as a home and educational institution for youngsters from poor family conditions. Later it was the site for a forestry college. Since about 15 years the aim of the foundation is to support forestry and agricultural education and research, by providing both land for experimental activity and monetary funds. The estate is also famous for being once the home manor (in the 1750's) of J. Alstromer, the man who "brought the potato to Sweden". The planning has been carried out by students at the faculty of forestry from SLU Umea, during the course Forest Management Planning (SPLB 1). The forest inventory was done from Sept. 24 to Oct. 3 1997 and the data was processed and analyzed from Dec. 1997 to Jan. 16 1998. The report presents nine alternative harvesting plans on the strategic and tactical level. The alternatives differ with respect to interest rates and (future) price lists. Which alternative is to be considered as the optimal management plan is in the hands of the decision-makers for the Ostad foundation. The planner is not supposed to take a standpoint on the interest rate or price development. The purpose of the FMPP is to develop a strategic forestry plan for the estate analyzed. The FMPP contains the most important components for goal formulation, inventory, forecasts and optimization. The strategic result can then be used in the following tactical planning with help of statistical methods. The tactical plans are produced using GIS. The goal of the tactical plan is to fulfil the results of the strategic plan, with regards to the cutting level and economical results for the next 5 to 10 years. In the tactical planning other important factors are considered, such as co-ordination of the forestry activities, nature-conservation values and landscape-planning.
forest management; forest resources; planning; geographical information systems; forest inventories; optimization methods; economic analysis; forecasting; sweden
Arbetsrapport / Sveriges lantbruksuniversitet, Institutionen för skoglig resurshushållning
Publisher: Institutionen för skoglig resurshushållning, Sveriges lantbruksuniversitet
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