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… tree species are Scots? pine Pinus sylvestris and Norway spruce Picea abies. 24 stands of 4 different stand categories were inventoried (nature reserves/voluntary set aside areas, >65 years old, 20-64 years old, 8-19 years old) and three different dead wood types were sampled …
Resultat från 3 olika bestånd i Västra Götaland. Åldern på bestånden är 30, 50 och 50 år. Varje provyta var 100 m2. Bestånden har vuxit utan gallring och gödsling och skötts enligt en metod som kallas Hyssnametoden. Syftet med studien var att beskriva, följa upp och utvärdera …
en studie av 21 drabbade objekt i södra Sverige
… 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 7.1 meters. The results of the …
är produktionen hållbar?
… aim of this report was to investigate the hypothesis that Norway spruce (Picea abies L. Karst), planted on poor ”Scots pine” stands will not have sustained growth during the whole rotation, due to water deficit in the closed stands. In order to investigate this hypothesis, data …
en studie åt Holmen Skog AB
… Lycksele och för de olika trädslagen tall (Pinus sylvestris) och gran (Picea abies). Huvudsyftet med kalibreringen har varit att skatta värdet på SIH givet att man vet värdet på SIS och andra ståndorts- och beståndsegenskaper. Eftersom SIS i sig är en funktion av …
In southern Sweden, beech (Fagus silvatica) and spruce (Picea abies) are two species with similar demands on soil properties. With increased global warming and high acid deposition the future may bring larger areas were the two species are overlapping, competing for the same …
… in the sparse shelter. Below the shelters and on one open area spruce (Picea abies) were planted in 1990. Due to heavy gracing a fence was built spring 1993. Beech (Fagus sylvatica), douglas fir (Psedotsuga menziesii) and pine (Pinus sylvestris) and spruce were planted in the …
The aim of this work is to demonstrate how the net present value (NPV) at the time of the first thinning depends on the spacing after pre-commercial thinning, and show how net value from first thinning in same stand is influenced. This study is performed with models based on …
… severe damage earlier than normal and instead regenerate with spruce (Picea abies) if the site index is good? - Is it profitable to cross-cut damaged stands differently? This exam work was done as an assignment to Bergvik Skog. It was performed as an inventory and a following …
… the tree species Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.). Another question of issue was if there were differences in the growth response between trees of different sizes. It is within the framework of the National Board of Forestry’s …
… stands where over-represented on land that former hold Norway spruce (Picea abies). Two different definitions were used. The analysis revealed that some of the districts in the three analysed regions showed a larger amount of diseased stands than others. These differences may …
… since the middle ages. The use of shelter wood cutting in Norway spruce (Picea abies (L.) Karst.) forests in Sweden met a revival in the early 1990s as an alternative for the dominating clear-cutting system when silvicultural costs increased dramatically for the latter …
… The aim of this report was to investigate how often Norway spruce (Picea abies L. Karst), is planted on poor Scotch pine (Pinus Silvestries) sites and if it affects the yield of Norway spruce? In order to investigate this, data from 29 stands witch had a lower site index than …
… 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 late decay …
… to pine weevils in Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) and to compare the effect of MJ between pine and spruce. In addition a complementary greenhouse experiment was conducted with the same aims as above and to determine the amount of resin ducts and …
