64 uppsatser · sida 1 av 5
Forestry is an important industry in Sweden, with clear-cut as the most commonly used method for harvesting. Here the long-term impact of clear-cut on lake water quality (dissolved organic carbon (DOC), nitrogen, phosphorus and pH) has been investigated, based on 23 lakes …
… in lakes and streams. The aim of this study was to investigate the effect of clear-cutting on the concentration of Hg and MeHg into draining streams. Increased Hg export is due to an increased mobilization of complexes associated with inorganic sulphides and/or dissolved organic …
… at final cut operations for consideration for the nature. It has not been clear how much wood volume that’s really left in the forest. There has also been suspects that wood is left in the forest for other reasons than of consideration for the nature. The purpose of this study …
… thinning, to be able to manage an undamaged ”repaired” stand? - Should you clear cut the stands with the most 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? …
… (= beetles depending on decaying wood) to gain substrate in boreal forests. Clear-cutting is an example of a man-made disturbance. Measures such as prescribed burning have been made to resemble natural disturbances. The aim of this study was to see which clear-cut …
förekomst, substratkrav och effekter av skogsbrukets naturvårdsåtgärder
… in northern Hälsingland, north central Sweden. Three stand-types, unburned clear-cut (24 areas), burned clear-cut (four areas) and forest (three areas) were investigated. Three unburned clear-cuts and one burned clear-cut were each investigated carefully with transects of a 2500 …
effekter av fröegenskaper och skärm/hygge på plantbildning, överlevnad och tillväxt de två första åren efter sådd
… emergence, survival and seedling height were made between: - Direct seeding on clear-cut and in shelterwood. - Different seed lots of pine and spruce. The results showed that: ” Direct seeding of spruce can be as functional as pine seeding, in both shelterwood and on clear-cuts …
en ekonomisk analys av olika gödslingsstrategier för ett skogsinnehav i norra Sverige
… theory that fertilization should be carried out ten years before thinning or clear cutting because then the invested capital is not bound longer then necessary and the fertilization effect has been utilized. Among the programs included in the study, fertilization ten years …
en jämförande studie utförd på uppdrag av Stora Enso Skog
… compared with spring plantings 2005 and so on. An equal distribution aimed at clear cut areas witch have been scarification with harrow and excavator. The clear cut areas should also have low site index. The planting areas were objective surveyed in grids. On every sample plot …
… Array type L-band Synthetic Aperture Radar (ALOS PALSAR) is investigated for clear-cut detection in boreal forests in northern Sweden (Lat. 64°14? N, Long. 19°50? E). Strong forest/non-forest contrast and temporal consistency were found for the Fine Beam Dual HV-polarized …
… (Pleurozium schreberi and Hylocomium splendens) along a chronosequence from clear-cut to mature forest, as well as the vegetation characteristics along the chronosequence. Measurements and samples were collected from 32 forest sites that were classified into four age classes …
Hur förändras ackumulationen i sjöar påverkade av avverkning jämfört med referenssjöar?
… well as the ratio DIC:CH4 differs between years and between lakes affected by clearcutting and untreated reference lakes. Water- and gas samples were collected from four boreal lakes (two affected by clearcutting and two untreated reference lakes) located in Västerbottens inland …
… 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. Shelterwood cutting systems involve some possible problems but also a lot of positive effects. Among the problems are …
Information för platschefer
… of, and that the currently used recommendation has to be adjusted. The study clearly shows that the thicker the material, the greater the heat affected zone, independently of the steel type, since the thicker material takes longer time to cut. The slower the cutting the longer …
Teknisk Fysik med Materialvetenskap
… of, and that the currently used recommendation has to be adjusted. The study clearly shows that the thicker the material, the greater the heat affected zone, independently of the steel type, since the thicker material takes longer time to cut. The slower the cutting the longer …
