För att garantera att skogen avverkas på ett uthålligt sätt tar Holmen med hjälp av Heureka PlanWise ca vart tionde år fram en strategisk plan (avverkningsberäkning) för att se hur stora volymer som går att avverka uthålligt. Till grund för avverkningsberäkningen ligger en inventering av skogsinnehavet. Inventeringen syftar till att säkerställa skogens aktuella status. Den avverkningsnivå som tas fram ligger fast fram till dess att nästa inventering genomförs. Varje år upprättas med hjälp av PlanWise en taktisk plan som tar fram vilka bestånd som ska slutavverkas de kommande 15 åren samt vilka bestånd som ska gallras under de kommande 10 åren. Den taktiska planen är uppdelad i femårsperioder.

When a decision is to be made on what long term strategic forest management plan to use, consideration must often be taken to multiple objectives. Such decisions are very complex and a promising approach to handle them is by Multiple Criteria Decision Analyses (MCDA). The study is based on the problem that the MCDA that have been implemented into forest management planning have only had capacity to compare and evaluate a limited number of management plans; which means that there is a risk the most suitable plan is missed. The aim with this study was to test the applicability of combining the MCDA tools: the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) and the Analytic Hierarchy Process (AHP) for including consideration to multi-objectives into strategic forest management planning. The study was based on the process of creating and selecting a management plan, using Heureka PlanWise, suitable for all the major objectives found in the forest holdings of a municipality in northern Sweden.

Forestry in Sweden is currently conducted in a manner aiming at equating the production objectives and the biodiversity. To ensure that biodiversity is maintained, patches that are considered to be valuable now or in the future is saved in final fellings. How the tree retention areas will grow into the future forest stands is yet unknown.The purpose of this study was to visualize how different scenarios of natural consideration taken at final felling will evolve in a long term perspective, for two rotation periods. Projections of the forest conditions were executed with the decision support system Heureka and its applications PlanStart and PlanWise. The information about the projected forests was then used for the visualizations which were created in the software Visual Nature Studio.

The purpose of this study was to analyze the two thinning models: Bergvik Skog´s thinning model, which is based on total stems and dominant height, And Swedish forest agency´s thinning model which is based on basal area, habitat index, dominant height and recommended number of stems at final felling in Heureka´s StandWise and PlanWise. The data we chosen for our study were taken from the Swedish National Forest Inventory and we were creating a simulated stand based on a great number of sample plots in Region three from The Swedish National Forest Inventory. We had chosen to create one stand with low habitat index (T20) and one with high habitat index (T24). Our purpose were to come as close as possible to a natural stand in central Sweden. We performed the thinning in StandWise and analyzed the data I Excel files. Our thinning optimizing´s were performed and analyzed in PlanWise. There wasn´t any big differences between the thinning on the lower habitat index.

Markägarnas anledningar till att äga skog kan vara många. Med skogsägandet kommer en del frågor och val som markägarna bör ta ställning till, däribland vilka nyttor som ägaren vill tillgodogöra sig? Vad är målet med skogsägandet? För att hjälpa markägare att finna skötselalternativ som stämmer med målbilden kan konsekvensanalyser över olika handlingsalternativ utföras med ett dataprogram som heter Heureka PlanWise. De data som krävs för att utföra dessa analyser är en skogsbruksplan med skogliga data som beskriver skogstillståndet. Detta examensarbete syftar till att med hjälp av Heureka PlanWise ta fram olika skötselstrategier som svarar mot vanliga mål som markägare har. Dessa inställningar skall kunna användas av inspektorer på Norrskog för att ta fram en skötselstrategi åt markägare eller att kunna visa på olika sätt att sköta skogen utifrån olika mål. Arbetet utgick från fem skötselstrategier: ? Bästa förvaltning av skogskapitalet ? Gynnande av biologisk mångfald ? Öka virkesförrådet ? Jämn avverkningsnivå ? Öka tillväxten För att ta reda på vilka skötselstrategier som är av intresse för Norrskogs medlemmar och hur markägarna ställer sig till denna typ av konsekvensanalyser genomfördes fem djupintervjuer.

SCA is the largest private owned forest owner in Sweden, with an ownership of 2 million hectares of productive forestland. To manage the planning of such large areas and to fit the traditional organization structure of a Swedish forest company, the planning approach is subdivided into three stages; strategic, tactical and operational. The strategic part, based on a statistic sample of stands, returns a harvest level estimate which should then be implemented at actual sites in the tactical part. This procedure can lead to incompatible solutions as the strategic solution is not necessarily possible to translate into actual sites in the tactical plan. The geographic aspect is important in tactical planning due to the large costs for moving equipment and maintenance of a large number of forest roads.

SCA is the largest private owned forest owner in Sweden, with an ownership of 2 million hectares of productive forestland. To manage the planning of such large areas and to fit the traditional organization structure of a Swedish forest company, the planning approach is subdivided into three stages; strategic, tactical and operational. The strategic part, based on a statistic sample of stands, returns a harvest level estimate which should then be implemented at actual sites in the tactical part. This procedure can lead to incompatible solutions as the strategic solution is not necessarily possible to translate into actual sites in the tactical plan. The geographic aspect is important in tactical planning due to the large costs for moving equipment and maintenance of a large number of forest roads.

Large areas of Lodgepole pine (Pinus contorta var. latifolia) were planted in the 1970s - and '80s. The purpose of the fast-growing species was to increase growth and with short rotation periods allow a rapidly increased harvest level. Today a large proportion of the young forests owned by Holmen Skog, Iggesund are covered by Lodgepole pine and an active forest management is required to spread the harvested volume over time which is desirable by a market perspective. The purpose of this essay is to investigate the possibility of spreading the harvested volume of Lodgepole pine over time.

A common goal in practical forest management is to maximize the yield, measured in economical terms. When a forest stand is thinned a so called inoptimality loss can arise due to non-optimal decisions. This means that the selected management schedule results in a lower net present value than the optimal one which lowers the profitability for the forest owner. Holmen Skog uses the term tract which means an aggregation of stands made before a management action. A tract should be delineated in different tract parts in connection with pre-thinning planning if there is different bearing capacity within the tract, different thinning grades should be used or if the tract contains a weaker part that should not be thinned.

Syftet med dessa simuleringar är att klargöra hur olika skördeintensiteter påverkar kollagret över tiden och därmed klimatet genom varierande grader av biomassauttag. I arbetet redovisas simuleringar på fastighetsnivå som gjorts i Heureka-PlanWise för en granskog med boniteten G30. Bakgrunden till detta är den pågående klimatdebatten, där oron ökar för ett förändrat klimat, orsakat av en allt högre halt växthusgaser i atmosfären. EU har ambitionen att förändra energimixen och ge förnybara energikällor en större plats. Bland annat har EU som mål att 20 % av energiförbrukningen år 2020 ska komma från förnybara energikällor. Resultatet visar att kollagret sjunker med ett ökat uttag av biomassa.

This thesis analyzes the effects of different fertilization strategies on forest management at Holmen Skog in Umeå district. Harvesting volumes, net present values and fertilization intensity are presented for each fertilization scenario. The planning reserve (percentage area older than minimum final felling age) was also analyzed in this study.The thesis covers the analysis of five different fertilization scenarios, varying in fertilization intensity, from no fertilization at all, to fertilization at every harvesting operation (thinning or final felling). A sub-study was also carried out so the reader in detail can see how the different fertilization scenarios affect individual forest stands of different nature. The analysis has been done with the planning tool PlanWise, which is an application of the Heureka analysis and planning system.

This thesis analyzes the effects of different fertilization strategies on forest management at Holmen Skog in Umeå district. Harvesting volumes, net present values and fertilization intensity are presented for each fertilization scenario. The planning reserve (percentage area older than minimum final felling age) was also analyzed in this study.The thesis covers the analysis of five different fertilization scenarios, varying in fertilization intensity, from no fertilization at all, to fertilization at every harvesting operation (thinning or final felling). A sub-study was also carried out so the reader in detail can see how the different fertilization scenarios affect individual forest stands of different nature. The analysis has been done with the planning tool PlanWise, which is an application of the Heureka analysis and planning system.

Generellt har gallring blivit mer och mer lönsamt och markägaren kan få ett netto vid en tidigare tidpunkt än slutavverkningen samtidigt som man kan göra ett kvalitetsurval. Syftet med denna studie är att se hur lönsamheten ser ut när gallring tillämpas på en fastighet i Norrbottens fjällnära skogar. Särskilt med tanke på den låga tillväxten och det tranportavdrag som industrierna har på massavedspriset. Indata för denna studie är en grön skogsbruksplan från en privatägd fastighet i Arjeplogs kommun. Planen har optimerats i PlanWise, ett beslutsstödjande system, som optimerar var, när och hur skötselåtgärder tillämpas för att få det högsta nuvärdet på fastigheten över en planeringshorisont utefter vad användaren har satt upp för restriktioner. I denna studie har 4 olika simuleringar gjorts. ? Gallring med transportavdrag ? Ingen gallring med transportavdrag ? Gallring utan transportavdrag ? Ingen gallring utan transportavdrag Genom att utesluta gallring ökar man fastighetens nettonuvärde med 10,8 % vid 1,5 % ränta jämfört med om man gallrar, samtidigt ökar nettot med 12,2 %.

Det pågår en ständig debatt mellan olika parter i samhället angående betesskador orsakade av klövvilt. Huvudmålet med dagens viltförvaltning är att anpassa klövviltstammarna efter fodertillgången i landskapet. Syftet med studien var därför att kvantifiera fodermängden för klövvilt i skogslandskapet, undersöka hur olika skötselåtgärder påverkar foderutbudet och analysera kostaderna för dessa. Studien begränsades till ett sammanhängande område i Holmen Skogs distrikt Egen skog. Med hjälp av beslutsstödsprogrammet Heureka PlanVis har foderutfallet för ett antal olika foderskapande skötselåtgärder tagits fram. I de flesta simuleringar var målet att maximera nuvärdet, men det alternativ som skapade absolut mest foder var när målet istället sattes till att maximera biomassan i skogslandskapet.

This study was conducted on behalf of SCA forest AB, Västerbottens forest administration. Timber procurement from non-industrial private forest owners has become an increasingly important part of SCA:s wood supply. The objectives of this study was to report the current forest conditions in the private forests in the county of Västerbotten, analyse the potential for procurement of wood from private forest owners, and provide a basis for decisions on future strategies for timber procurement from private owners.Material and data have been collected from different sources, mainly from Swedish National Forest Inventory and SKA-VB08. This material was the basis for the analysis and calculations performed with the Heureka application PlanWise. This study area was divided into six different analytical areas (Coastal south, Coastal middle, Lycksele, Inland south, Inland north, Skellefteå), where each area of analysis is represented by a number of municipalities.In this study, two scenarios were specified; one describing the current forest management with current harvesting levels and the effects of these assumptions, the second to illuminate what potential there is for future timber harvesting.