57 uppsatser · sida 3 av 4
… following direct injection of liquid solutions into the xylem of 40 year old Norway spruce. The field site is located at Flakaliden (64°07?N, 19°27?E), approximately 60 km northwest of Umeå, Sweden. A total of 18 trees were selected for treatment, equally divided between three …
a comparative and kinetic study of thermal decomposition for Norway spruce stump, poplar and fuel tree chips
… models including one-step and three-pseudo-component models. The focus was on Norway spruce stump. Two other types of biomass, poplar and fuel tree chips were also included in the study for comparison. The study has demonstrated that fuel properties, including heating values and …
… has been a growing interest in factors influencing wind damage in above all Norway spruce (Picea Abies) stands. Although many other interesting areas still need to be examined. In 2005 there where a lot of stands that suffered different degrees of damage, a lot of these stands …
utbud, efterfrågan och lönsamhet
… of these households buys Christmas trees. 80 % of these Christmas trees are Norway Spruce (Picea abies), which is the most common Spruce in Sweden. Every year over 170 000 Christmas trees are imported to Sweden. The main import comes from Denmark. The thesis is based on a …
… 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 relevance of storm damage standpoint, according to the results were; the …
… For example, Kolström (1992) in Finland and Solberg and Haight (1992) in Norway. There are some advantages of stage structured models compared to single-tree models. Single-tree models can be very complex and include many variables, which can be a problem when using the models …
skogshistoria på Ängsön-Marskär i Stockholms södra skärgård
… and has also been cultivated. Today large Scots pines grow here as well as Norway spruces, many of which are storm damaged. Level two consists of the forest areas situated higher than five meters and lower than ten meters above sea level. The land use in this zone has differed …
en studie av 21 drabbade objekt i södra Sverige
… The average age on the stands was 55 years. The most common type of forest was Norway spruce stands Pice Abies. The average siteindex was G29. The most frequent type of ground vegetation was ground whiteout vegetation. The average track size had a depth of 23 cm and a length of …
beskrivning av en gallringsmodell för granskog som tillämpas på Trolleholms Gods
When Norway spruce is planted with large initial spacing and grows on highly productive sites in southern Sweden, a high proportion of the stems gets broad annual rings. The thinning programme carried out at the estate of Trolleholm aims to extract stems with too broad ring …
… The criteria for the studied stands were that they had to be dominated by Norway spruce and be in a severe status of ”conflict”. The aim of the interview was to get an overview of the situation today, and also analyse trends in terms of conflict stands. The reason for including …
… assortments are as follows: sawlogs from Scots pine (named TT), sawlogs from Norway spruce (GT), coniferous pulpwood (BM), hardwood pulpwood (LM) and the total volumes from each stand (TOT). The thesis consists of four separate studies. Study 1 is the main evaluation of the …
… exposition and different historical use. Abundance and regeneration of Norway spruce (Picea abies (L.) Karst.) were high in north sloping stands. The volume of dead wood was generally high in all stands, but the proportion of dead wood with large (> 25 cm) diameters and within …
… and nitrous oxide. The emissions were measured from the soil surface in a Norway spruce forest located in the southern part of Sweden. The study was conducted during May and June in 2008. The greenhouse gas emissions were measured from five different parcels, of which 3 were …
… both field experiments included 1- year old conventional seedlings of Norway spruce (Picea abies L.). The results for the first field experiment showed an overall survival rate of 85 %. All of the reference seedlings were alive, while 5 % were deadly damaged by the pine weevil …
This project investigated how elevation and vegetation type influences variation in plant litter phenolic content and protein precipitation capacity among and within common plant species for two different vegetation types, heath and meadow, in a subarctic ecosystem in the Abisko …
