117 uppsatser · sida 5 av 8
… strip roads, and the average width of the strip road was 4.3 m. The number of damaged residual trees correspond to 2% of the total number of residual trees. The total time consumption including harvest and forwarding work (100 m forwarding distance) was 13.9 E0-hour/ha. The …
… third fertilization, the economical effect will be limited due to that the damage will occur at atree height where the quality is of less importance.With the amounts and interval that are used in commercial forestry today, the risk of substantialgrowth disturbance is low in …
har skogen återhämtat sig?
The fungus Gremmeniella abietina causes damage to conifers that can lead to tree death. In 1999 and 2001 the pathogen caused severe attacks in Sweden, where about 500 000 ha of pine forest were affected. Trees of all ages were attacked, but mainly forests between 30-60 years …
forage production, utilization by ungulates and browsing on adjacent forest
… potential methods for controlling the ungulate foraging and reducing browsing damage by providing other attractive food resources. However, quantitative estimates of potential biomass production of various gamefield crops and browsing pressure on the surrounding forest have been …
… the compared sites; however, there were a significantly higher proportion of damaged trees inside the enclosure. The ground cover variables showed a higher amount of bare soil, plant litter and wood-rush (Luzula sp.) inside the enclosure whilst grass was more frequent in the …
preparing for the unpredictable
… of the Swedish economy. These supply chains are highly susceptible to storms damage. In late 2013 Sweden was hit by multiple storms. This leads to the possibility to research how supply chains react to the shocks that storms cause. The aim of this thesis is to research the costs …
… development of the forests. Thinning quality often means a minimization of damages on soil, stems and roots during the cutting. One way to reach a high quality is to set up goals that will be followed up after the cutting is made. Self-checking gives information of the machine …
… was in average 1588 per hectare. The proportion of potential timber trees (not damaged) was in average 21 %, which corresponds to approximately 330 stems/hectare. Many of the stands were regenerated with seedling containers, which had been sawn with several seeds resulting in …
Ungulates are causing conflicts between stakeholders due to browsing damage on forests and agricultural crops. At the same time there is a big demand of keeping high ungulate densities for sports hunting and recreational purposes. Movement patterns of ungulates are strongly …
… Karl Hedin claims that his sawmills has not noticed any significant moose damages in the timber. The purpose with the study is to find out the causes to the moose explosion and what it has led to in today’s forests. A questionnaire has been sent out to sawmills in the region …
… delivered to for further refinement. Factors investigated were the type of damage metal objects caused in these two sawmills and the economical signification of these damages. Even the harvesting and managing of Fortifikationsverket´s timber in areas where trees contained …
indikation, frekvens och utförande
… Karl Hedin claims that his sawmills has not noticed any significant moose damages in the timber. The purpose with the study is to find out the causes to the moose explosion and what it has led to in today’s forests. A questionnaire has been sent out to sawmills in the region …
… Karl Hedin claims that his sawmills has not noticed any significant moose damages in the timber. The purpose with the study is to find out the causes to the moose explosion and what it has led to in today’s forests. A questionnaire has been sent out to sawmills in the region …
Mechanical harvesting may result in timber damages leading to reduced saw log quality. The initiator of this study was VIDA ? a privately owned concern operating in the value-adding process industry of forest raw materials. The aim of this study was to examine the type and …
… the analyses that tested the stand factors that influence the amount of storm damage to the greatest extent showed that the storm sensitivity of Norway spruce stands were largely due to previous management actions. The factors that could be controlled by thinning and had …
