136 uppsatser · sida 6 av 10
This study was conducted on a property with a thinning machine team. The purpose was to investigate in which machine, the harvester or the forwarder, that caused most damage to the trees in six different stands. Different factors, related to the damage frequency in the stands …
En litteraturanalys
… in the end of this century. Afaster growth will require greater and earlier thinning. This reduces the carbon storagein forests and reduces nutrient availability. An earlier beginning of growing season willenhance the risk of frost damage. A temperature that drops below freezing …
en simulering i Heureka
… alder (0%, 30%, 45%, 60%) with each three different management programs (no thinning, one thinning, two thinnings) were simulated. The results showed that 30% Alder, in the mixed stand, gave the highest total volume production regardless of the management program that was used …
… for forwarders and harvesters with multiple tree handling aggregate in thinning, by different tree volumes. To make this analyse a time study was performed where three entrepreneurs work has been analysed. Beside the analyse, of different quantity of assortments, has also been …
Med gallringseffekt menas att träden efter en gallring ökar sin diametertillväxt. Denna effekt har traditionellt tillskrivits den minskade konkurrensen om ljus och näringsämnen mellan träden. En alternativ förklaring till gallringeffekten är att vindpåverkan per träd blir högre …
I Sverige gallras årligen ca 360 000 ha skogsmark. Skogsbolagen efterfrågar effektivare skogsmaskiner för att minimera kostnaderna i skogsbruket. Två finska och en svensk studie pekar på produktivitetsökningar i storlekar upp till tio procent vid användandet av griptilt …
… long been a problem in order to effectively carry out stump treatment in both thinning and final felling. It is important that the stump treatment? equipment is configured as well as a sufficient amount of water is carried out on the harvester to get a cost? effective treatment …
… of this study was to estimate the removal of biomass in connection with thinning operations in young stands that are dominated by small diameter trees. The economy of such operations depends on the products generated as well as the performance of the harvesting systems …
En kvalitativ studie om HR-medarbetares och chefers upplevelse av att arbeta tillsammans
… filled out by librarians with responsibility for purchasing and / or thinning in libraries across Sweden. The analysis is done with an analytical schedule, that consists of a number of opposing ideal types taken from previous research on quality, purchasing, thinning or …
En idéanalys av folkbibliotekariers syn på skönlitterär kvalitet och hur den påverkar deras arbete
… filled out by librarians with responsibility for purchasing and / or thinning in libraries across Sweden. The analysis is done with an analytical schedule, that consists of a number of opposing ideal types taken from previous research on quality, purchasing, thinning or …
Topping is a precommercial thinning (PCT) method where secondary stems are cut higher above the ground compared to conventional PCT. The secondary stems continue to live for a period and are supposed to compete with the main stems and promote their quality. The objective of the …
ett exempel på medbestämmande planering
… grazing management, methods like grass cutting in open areas and cleaning and thinning in forest stands, have been proposed. The aim of the management is to keep up the variations of the landscape and create a mosaic of different kinds of forests and open areas. The management …
… than the living trees. This is probably due to strong competition during self-thinning. The diameter distribution for the dead trees, in the stands with large trees, are steadily increasing from diameter 40 cm and larger. This can be an indication that the mortality is not …
… is described, every step in the process with image enhancement, binarization, thinning and how to find the minutiae points. Also what false minutiae points are, how they arise, why they deteriorate the result, and how to handle them, is discussed. Finally a test of the system …
… of the gross volume. Inaccurate mapping of stands is a category wich contains thinning stands and will therefor be cut at later occasions. It represents 2 percent of the gross volume in Torsby region. The reason to that more wood are left within Torsby district might be that the …
