470 uppsatser · sida 3 av 32
The competition for Norway spruce pulp wood in Central Sweden increases, forcing the supply-structure of Holmen to face two important challenges. Firstly, it is of the outmost strategically importance to secure the long-term supply of Norway spruce pulp wood to the industries …
… for the management of forestry which has been to find out: 1. How much dead wood is present in Håltjärnsbäcken. 2. Find out about the existence of dead wood varies in Håltjärnsbäcken de-pending on where in the catchment is located, that is, seek out where there is any difference …
tillväxt, mortalitet och strukturell förändring 6-18 år efter avverkning
Today green tree retention, together with leaving dead wood, is a common practice with the aim to reduce negative impacts on biodiversity and environment due to clear-felling. To better understand whether this conservation practice also makes a long-term difference, it is …
En studie om uppvärmning med pellets och flis
… boiler as a heating system. The aim of this thesis is to investigate whether wood chips or pellets is, from a sustainability standpoint, a suitable heating method for the guest house. A literature review and a field study are carried out to create an information base. The …
The purpose with this study is to find out how much dead wood we can expect us to find in a Russian reference river and compare with studies from Swedish streams. Dead wood are an important structure for the biodiversity in forest streams, studies have shown that population of …
At SIA TallOil's pellets factory in Latvia wood shavings and saw dust are dried with flue gases from a gas burner. TallOil wants to replace the gas with a biofuel that is available at the pellet plant. The reason for this is the unstable gas market in Europe in combination with …
- en fallstudie av Moelven
The purpose of this study is to explain how the value of sawn wood changes when sawn wood are cut in 30 respective 60 cm lengths. The raw material into the saw mill will mainly be bucked in 30 cm and 60 cm modules. There will also be two alternatives where the timber will be …
substrate preferences and amounts of dead wood
Dead wood is important for many species. The amount of coarse dead wood (diameter >10 cm) is much lower in managed forest than in unmanaged forests. Stumps constitute the largest proportion of the volume of coarse dead wood in managed forests. Since stump harvest for biofuel may …
kvaliteter och kunduppfattningar
Today there is a widespread opinion that the woodmarket and the forest industry are dominated by a traditional way of thinking and not adapted to the customers of today; a lot of products are produced purely on routine. Also, there is a demand for improving the quality of sawn …
två fallstudier
… The study is based on two case companies and their relations with wood-suppliers. - Case company 1 is a relatively new established and still growing company. The business concept is based on few articles and the main focus is private customers and small firms. They are satisfied …
… productivity in first thinning of birch stands, when either energy- or pulpwood was harvested. The systems total profitability was also compared by including forwarding and chipping costs. A Gremo 950 HPVR harvester was used and the same driver was used under the entire study …
… where measured in the surrounding forest. In those circles the amount of dead wood was measured along with the number of tress with traces of woodpeckers, insect holes, occurrence of lichen and tree living fungus was counted and documented. The number indicated a nature value …
… methods that have beeninvestigated is a fencing system made completely out of wood so called ”German wood fence”.Browsing of game in forest regeneration areas is often a big problem and some kind of protection ofthe plants is often necessary. There is several ways of building …
… methods that have beeninvestigated is a fencing system made completely out of wood so called ”German wood fence”.Browsing of game in forest regeneration areas is often a big problem and some kind of protection ofthe plants is often necessary. There is several ways of building …
… profitability at road side was analysed, and one as a pulp producer, when the wood cost at mill gate was calculated. When the profitability at road side was analysed, KPI´s such as NPV, IRR, B:C ratio and payback period were used. The wood cost was calculated both as EUR per m3 …
