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1284 Uppsatser om Forest property - Sida 39 av 86
Do grizzly bears use or avoid wellsites in west-central Alberta, Canada?
The purpose of this report is to make an evaluation of the self-monitoring for scarification which Stora Enso is using and this study deals with the effects and importance of scarification. A comparison is made in this study with the purpose to highlight any differences between some of the leading forestry companies and significant forest organizations in Sweden. The companies represented in this report are Korsnäs, Mellanskog, SCA, Sveaskog and Södra.
In the beginning of this study an interview form was set up together with Daniel Forsberg at Stora Enso. Stora Enso is the head object of this report and seven interviews were made within that company. At the other companies only three interviews were made within each one, with an exception to Mellanskog who wished four.
Kampen om soprummet : en explorativ studie av olika aktorsperspektiv på hushållsavfallets hantering
This thesis in social anthropology is based on a field study on the Internet exploring Tibetan identity. With a post-modern approach the thesis explores the possibility fora non-tibetan to create a Tibetan Internet identity and become a part of the Tibetan community that exist on the Internet..
Renens fejskador på tall- och contortaplanteringar inom Malå samebys höst- och vinterbetesområden :
The effects of Reindeer mechanical damages on the planted regeneration of Pinus sylvestris
and Pinus contorta.
Semi-domesticated reindeer can damage young trees. In late winter reindeer rub their antlers against young trees. The aim of this study was to quantify those damages. This study covered planted objects from three different areas in northeastern Sweden.
Skogsentreprenadföretagens lönsamhet :
During some time there has been a debate whether or not logging contractors? profitability can be considered poor. The contractors? situation is important for maintaining long term relationships and continuity in the forest industry. A thorough analytic picture is however missing.
Upphovsrättens sammanställningsskydd och sui generis-skyddet för databaser. En adekvat skyddsnivå på bekostnad av informationsfriheten?
Collections, compilations and databases currently stand under a solid intellectual property protection in Sweden. This legal protection is partly a product of the old Nordic ?catalogue-rule? seen in the former 49 § of the Swedish copyright act (upphovsrättslagen) but was further extended by the implementation of the EU directive on the legal protection of databases 96/9/EG and the new sui generis-right. Since major values are represented digitally combined with the fact that Internet serves as the main provider for information a strong legal protection for databases must be carefully crafted. When crafting this kind of legal protection the right to freedom of information is balanced against the database producers? interests of property protection as well as social and public interests such as increased innovation.
Texturbestämning genom fält-, pipett- och hydrometermetoder :
Texture is an important soil property and accurate particle size analysis of soil texture is therefore crucial. There are a number of well-established and newly developed methods available for determining soil texture. In order to compare the results of these methods, the differences between them must be determined.
The difficulties, problems and differences regarding texture class determination were examined through a study performed on forest soil samples. The study compared different methods (pipette, hydrometer and field methods) and two types of dispersing agents (sodium pyrophosphate and sodium hexametaphosphate (calgon)) commonly used for particle size analysis.
Död ved i gallrad skog och nyckelbiotoper : en jämförelse av habitatkvaliteter för vedlevande lavar och mossor
A high amount of dead wood is one of the most important prerequisites for high biodiversity on forest land in Sweden. Dead wood is most abundant in young forests, thinned forests, woodland key habitats and protected forest land. In old-growth forests most of the dead wood consists of logs and snags, whilst in managed forests a huge proportion of dead wood is made up of logging residues like stumps and FWD, fine woody debris (< 10 cm diameter). All these different types of dead wood may serve as substrates for epixylic bryophytes and lichens. However, few studies have been conducted on the relative importance of these different fractions of dead wood for the occurrence of bryophytes and lichens, especially when considering dead wood on thinned forest land.
Minskad utbredning av apollofjäril, Parnassius apollo, i södra Stockholms län : En studie av möjliga faktorer utifrån artens habitatkrav
The Apollo butterfly, Parnassius apollo, is categorized as Near Threatened (NT) in IUCN Red List. Today in Sweden it is found only in strongly fragmentized populations. In the county of Stockholm, P. apollo exists exclusively in some islands of the archipelago and with one mainland population in Stora Vika. This study has the purpose of expanding the knowledge of the local conditions for the butterfly in the south parts of the county of Stockholm and thereby contributes to a sustainable land management that can preserve the Apollo butterfly.A comparative study was done between areas where the butterfly today have: a stable population (Stora Vika, Utö and Ålö), has disappeared (Muskö and Yxlö) or is strongly declining (north part of Ornö).
Stamskador i gallringsbestånd
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, were checked out. For example: basal area per hectare, thinning strength, tree diameter and the rate of production.
The harvester drivers were also interviewed about how, when and why stem damages occur and how to minimize them.
The study stated that 4.3 percent of the trees were damaged. Out of these 88 percent was caused by the harvester and the rest, 12 percent, by the forwarder..
Den skogliga informationens roll i ett kundanpassat virkesflöde : en bakgrundsstudie samt simulering av inventeringsmetoders inverkan på noggrannhet i leveransprognoser till sågverk
This MSc thesis is divided into two parts. The first part deals with the need for information
from forest campartments selected for clear cutting, in connection with planning in an
integrated forest- and sawmill enterprise. A review of literature is followed by a case stud y,
where present conditions in a Swedish forest company are compared with current research in
the area. The seeond part consists of a simulation stud y, which aims at camparing the
accuracy of inventory estimates using different methods. The estimates are delivery forecasts,
covering one month consumptian of timber in a large sawmill.
The Tenant Way. Fastighetsbolags strategiska arbetssätt avseende kommersiella hyresgäster
Fastighetsbranschen står inför en förändring. Forskning tyder på att fastighetsbolag kommer att gå mer och mer mot att bli mer traditionella tjänsteföretag och att pengar inom branschen kommer att tjänas genom att vara en så duktig förvaltare som möjligt i avseende till fastighetsdrift och hyresgästförvaltning. Denna kandidatuppsats fokuserar därför på att undersöka hur fastighetsbolag kan utveckla sina tjänster mot sina hyresgäster samt vilka faktorer som kommer vara avgörande i framtiden för att bli ett framgångsrikt fastighetsbolag.SyfteProjektets syfte är att göra en undersökning över hur fastighetsbranschen troligtvist kommer att förändra sitt strategiska arbete mot sina hyresgäster och vilka faktorer som då kommer att karaktärisera ett framgångsrikt fastighetsbolag.Frågeställningar? Vad kommer att vara viktiga framgångsfaktorer hos ett fastighetsbolag i framtiden?? På vilket sätt bör fastighetsbolag kontakta hyresgäster och hur ska de samla och dela information om sina hyresgäster för att kunna förutspå deras framtida behov?? Finns det några särskilda krav på fastighetsbolagets organisation för att tillgodose hyresgästernas behov på bästa sätt?MetodUndersökningen är av kvalitativ karaktär och baseras på intervjuer med representanter från olika fastighetsbolag och representanter från kommersiella hyresgäster. Sammanlagt har 14 intervjuer genomförts.
Kan markfuktighetskartor användas för att hitta skogsmark med hög bonitet? : ett gis-baserat försök med dtw-index och laserskannad övre höjd
The depth-to-water-index (DTW-index) is derived from digital elevation models (DEM) to map soil wetness, in terms of distance from soil surface to the ground water table. The aim of this GIS based study was to investigate the existence of a relationship between DTW-index and forest site productivity (SP). The belief of such an assumed relationship was based on knowledge that the ground water level is related to site properties that can either promote or impede tree growth.
Data primarily comprised rasters of the Krycklan catchment in northern Sweden and depicted DTW-index and a laser scanned vegetation height. The 100th height percentile of each pixel in the vegetation raster was assumed to mirror the top-height, letting it act as a relative measure of SP within a delineated area of equal stand age.
Däck-mark Interaktion hos skogsmaskiner
The most predominant method for forest harvesting in Sweden is the cut-to-length method based on two-machines, a harvester that fells trees and cut them in a predefined length, and a forwarder which transports logs to a landing area for further transport to a processing facility. New machine solutions have to be much gentler to the ground than today?s machines. To be able to develop a forestry machine that preserves the terrain requires a proper understanding of the interaction between tire and soil.The goal of the project is to contribute to the existing knowledge of forest machine tire-soil interaction and to develop a tire-soil model that enables dynamic simulations of forest machines operating in rough terrain. The modeling has especially been focused on the interaction between tires and soft ground.A comparison of theoretical data of different WES-based terrain interaction models and a comparison test data from a full scale field test is presented.
Att veta Gudarnas hemlighet : En sårbarhetsanalys av omständigheterna kring stormen Gudrun med pressure and release modellen
The concept of vulnerability is the capacity or the sensitivity to become damaged. Vulnerability are characterized by one or more of the following terms; a system´s sensitivity to exposure to shock, stress or interference, the state of the system in relations to a threshold of damages, and the system´s ability to adapt to the changing circumstances. Vulnerability in this study is referring to the sensitivity of the circumstances that lead to sustainable livelihood that can´t be maintain and that there is an inability to cope with and manage stress. The choice of making a study in this area is based on that action needs to be taken to moderate the vulnerable aspects of society, in this respect in relations to storms. Analyzes of the social vulnerability to climate change or natural events is needed for effective actions.
Vad orsakar skador på kvarstående träd vid mekaniserad gallring - en intervjustudie
This thesis includes a review of scientific studies of tree injuries following mechanized thinning. Interviews have been made with drivers of single grip harvesters and forwarders in forest thinning and a number of essential factors have been identified as the most important to take into account in order to minimize and/orprevent injuries to stems and roots of remaining trees..