294 uppsatser · sida 2 av 20
en ekonomisk analys av olika gödslingsstrategier för ett skogsinnehav i norra Sverige
… context and the results show how the different programs affect annual cut volume and NPV (net present value). The programs included in the study are based on the theory that fertilization should be carried out ten years before thinning or clear cutting because then the invested …
Different methods for shelterwood cutting have been used in differ-ent parts of Europe 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 …
effekter av fröegenskaper och skärm/hygge på plantbildning, överlevnad och tillväxt de två första åren efter sådd
… 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, during the …
… 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 matter …
en jämförande studie utförd på uppdrag av Stora Enso Skog
… 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 assessed …
… 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 characteristics …
Information för platschefer
An investigation of the heat impact of laser cutting on the material properties when producing tensile and impact test specimens of different steel types of varying thickness has been performed. The purpose of the thesis project was to provide recommendations regarding how much …
Teknisk Fysik med Materialvetenskap
An investigation of the heat impact of laser cutting on the material properties when producing tensile and impact test specimens of different steel types of varying thickness has been performed. The purpose of the thesis project was to provide recommendations regarding how much …
… the actual particle size of the maize silage and the theoretical length of cut. The measure of theoretical length of cut were stated by the farmers and not measured by us. Particle size of maize silage was determined using the New Penn State Forage Particle Separator. SLU Skara …
… turned out to be the major limitation of the results. The three covers were cut grass, cut clover and cloth of fibre. Where the parcels were covered with clover or grass the plants visually seemed more healthy and vigorous than the other plants. This is probably due to the fact …
… data and GSD-Marktäckedata have been complemented with information about cut forest from the Swedish Forest Agency and roads from the Swedish Road Administration. Vegetation data has also been completed with power line area from the forest phase layer and GSD-Marktäckedata with …
föryngringsresultat 7-10 år efter avverkning
… regeneration results with planting of spruce after soil scarification in clear-cut areas. Totally 17 harvesting sites have been inventoried and 15 of those included natural regenera-tion in birch shelterwoods, and two were subjects to soil scarification and planting of spruce …
det operativa traktvalets påverkan på den säsongsmässiga uthålligheten i ett bolagsdistrikts traktbank
… variation in soil humidity, there is a lack of stands that are possible to cut during spring and autumn in some geographical regions. For Holmen Skog this sometimes means that a large proportion of the contracted private forest is cut during the winter when the ground is frozen …
… 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 backscatter …
… at early and late spring and the number of ears. Ten ears from each site were cut at three different occasions, starting from the time of blooming, with 200 day degrees between each cut. The dry weight of the collected ears was quantified. In addition, ear length, number of …
