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1010 Uppsatser om Random Forest - Sida 57 av 68
Faktorer som påverkar skogsfastigheters pris
Under de senaste 20 åren har priset på skogsfastigheter ökat dramatiskt. Historiskt sett har priset på skogsfastigheter haft en tydlig koppling till skogens avkastning, men detta samband tycks inte längre gälla. Utöver värdet av skogens ekonomiska avkastning, tillkommer idag värdet av ickemonetära resurser som tidigare hade en begränsad betydelse för fastigheternas pris.
Faktorer som bonitet och åldersfördelning påverkar en skogsfastighets avkastning. Men är det självklart att dessa faktorer även påverkar skogsfastigheters pris? Om utvecklingen av fastighetspriset medfört en försvagad koppling mellan avkastning och pris, kan detta då förklaras av att tidigare prispåverkande faktorer inte längre beaktas i fastighetsvärderingarna?
Syftet med studien var med bakgrund av detta att undersöka hur ett antal faktorer påverkar fastigheters pris; däribland åldersfördelningen och boniteten.
Factors affecting bark-stripping by red deer (Cervus elaphus) : the importance of landscape structure and forage availability
Bark-stripping by red deer (Cervus elaphus) cause extensive damage to economically valuable spruce trees (Picea abies) in Swedish forests. The underlying causes for bark-stripping are not fully understood, and the frequency and severity of damage unpredictably differ between regions. In this study, I investigated if landscape structure (e.g. agricultural dominated landscape opposed to forest dominated landscape), forage availability, population density and disturbance (e.g. roads and settlements) affect bark-stripping frequency.
Stubbtransporter och bränslekvalitet hos stubbved :
Stump wood is a hot alternative when the heating plants demands more and more forest fuel. The aim with the study has bean to calculate the costs in four different systems for transportations of stump wood, examine if there are any differences in fuel quality for the stump wood in the different systems, analyse if the fuel quality in stump wood is affected with the time it lays by the road side and how much space the stump wood demands on the road side. To calculate the costs for the different systems a system analysis was carried out, where some of the costs were collected through field studies on Holmen Skog stump experiment and other costs were collected from literature and contacts. Data for the fuel quality study was collected from Eons heat plant in Norrköping. Data for the study of how much space stump wood takes along a roadside was collected from field studies.
En park för alla
This Master Thesis is a product development project that has been carried out in cooperation withLappset Sweden AB.The purpose has been to develop a group of products suited for parks andtraditional playground locations. The specific target area has been courtyards of newly builtresidential areas. (These pieces of open land resemble glades that can be found in the forest,which in Swedish is called ?gläntan? and has given name to the product family). Therefore thedesign should match contemporary architecture.
Contortatallens odlingsvärde i Götaland
The third most common conifer in Sweden is Pinus contorta (lodgepole pine). It originates from the western part of North America and was brought here in the end of the 1920s. The lodgepole pine is today allowed for commercial plantations in central and northern Sweden, excluding high altitude locations. Since 1979 only plantations with scientific purpose are allowed in south-central and south Sweden.
This document is focused on how lodgepole pine manage perform compared with Pinus sylvestris (Scots pine) in the southernmost part of Sweden, Götaland. The idea came from the fact that the Swedish government is evaluating a notification from the National Forest Agency that suggests lodgepole pine to be allowed for commercial plantation even in southern Sweden.
En intervju och enkätstudie av besökare i tre tätortsnära skogsområden i Stockholmstrakten :
This Masters thesis is made as the first of two visitor surveys of three urban forest
areas. These areas are; Skutan recreational area in Haninge, Ugglevikskällan on Norra
Djurgården in Stockholm and the Paradiset Reserve in Huddinge. The study is made
in cooperation with the managers of the three areas operating within the European
Union Life Project regarding Urban Woods for People.
The goal has been to collect data through studies of visitors and close by residents in
the three areas. The results are to be used as primary values for the follow-up as well
as a basis for managerial decisions. The interviews and surveys are also constructed in
a fashion so that they can be used for the follow-up study.
For the Skutan recreational area the mode of contact was by sending forms to the
nearby residential areas.
Thuja plicata - etableringsförsök av jättetuja med fyra olika provenienser
Future climate changes may lead to an interest of alternative and foreign forest tree species in order to spread the risks in forestry. Douglas fir, Sitka spruce, Freemont cottonwood and hybrid aspen are examples of popular foreign tree species that along with western red cedar could have a future in the Swedish forests.Södra Skogsägarna and SLU have collaboration in establishment of foreign species in Swedish forests.The purpose of this study was to analyze and present the establishment of western red cedar, and to survey and illustrate injuries of freeze drying and other damages like deer browsing, vegetation and insect attacks. The study included four different provenances, and spruce as a reference, planted in two locations ? Asa and Släne.Western red cedar is despite its name a conifer of the cupressaceae family with defined secondary characteristic and gets along well with an overstory. Western red cedar grows often in mixed stands with similar conifers and its natural habitat is within and in the area near to British Columbia.The study included two series of field inventories, one made in the summer and one in the autumn 2013, three growing seasons after plantation.
Scenografi för en landskapsarkitekt :
Stage Design is design for action and contains décor, side-scenes and properties, as well as costume and grease-paint. The one responsible for this is the Stage Designer, who together with the Director, creates the best conditions for the actors to perform in.
The stage, where the play takes place, could be either in a theater, an auditorium, or in another sort of room, at another place, inside or outside, and where the place itself inspires to theatrical performance and expressions. This type of theater is called Site-specific theatre.
Two examples of this is the workshop ?Skogen sjunger? (eng.
Förskolors inställning till och användning avstadens natur :
This master thesis is made in co-operation with the Department of Forest Management and Products at the Swedish University of Agriculture in Uppsala and the Forestry Association in Stockholm. The purpose of the Master thesis was to describe how pre-schools in Sweden use forests and green areas, and to understand how different factors can affect the use of the nature. The purpose of the interviews was to create a picture of attitudes and routines of the pre-schools, in the matter of visiting the nature. The thesis is built on interviews where fifteen pre-schools in five large cities around Sweden participated. Among these pre-schools, five of them worked with special focus on nature, while the other ten did not have any particular focus connected to their activity.
Kronandelsrelaskopering, en ny metod för att fastställa gallringsbehov?
In today´s forestry, assessments of needs for thinning are based on basal area measurements. This is an indirect measurement. The approach and the developed assessment tables are based on an assumed production forest, which implies that management proposals in stands that deviate from the basic model may be misleading. Since Walter Bitterlich in 1948 launched the idea of the relascope, several modifications have been developed for different purposes. In common is that all are based on a certain angle measurement principle.
BIODIVERSITETS P?VERKAN P? M?NGDEN ORGANISKT MATERIAL I ALSUMPSKOG: En fallstudie i fyra alsumpskogar p? svenska v?stkusten
Globally, coastal ecosystems like mangrove forests, sea grass meadows and salt marshes are well known for their ability to capture and store atmospheric carbon effectively. In Sweden, there is still limited knowledge about local coastal ecosystems with similar functions, with alder swamp forests being an interesting example. Therefore, this study aimed to increase knowledge of the factors that can contribute to the potential carbon sequestering ability of alder swamps. Vegetation data and sediment samples were collected from a total of 37 sampling plots across four alder swamps in Bohusl?n on the Swedish west coast.
Behovet alltid större än möjligheterna : En fallstudie av de drabbade kommunernas kriskommunikation i samband med branden i Västmanland
The tsunami in Thailand in 2004, 9/11 and hurricane Katrina in New Orleans 2005 are all reminders that no organization is immune to crises, which also means that all organizations should be prepared and know how to handle a crisis if one was to occur. A case study has been conducted, on a crisis regarding a fire that occurred on the 31st of July 2014 in Västmanland, Sweden. Through Qualitative interviews empirical data was gathered and then analyzed together with our theories and previous research. The purpose of the study is to analyze how the municipalities affected and the County Administrative Board of Sweden handled and communicated with/to the public during the fire that spread in Västmanland 2014. Our study shows that a risk analysis and analysis of surroundings is crucial in anticipating a crisis event and that it is essential for organizations to undergo training to prepare organization members on how to handle a crisis. Another conclusion is that the need for information is large during a crisis event and grows throughout the entire course of the crisis. The crisis that we studied had a lack of information, but at the same time the public?s need for information is a need that can?t be satisfied during a crisis.
Drivarens produktivitet vid lossningsarbete :
During the last few years the harwarder has developed from a prototype into a market product. Holmen Skog owns two harwarders and uses two more owned by entrepreneurs. In previous studies it has been shown that the harwarder was a slow and expensive forwarder. In this study the unloading at road-site was studied. The goal was to describe the differences in time consumption between unloading two-sided or single-sided (only from side of the road) and also the difference between unloading with three and four assortments in the carrier.
Motorik hos barn som går montessoriskola : En pilotstudie av elever på en montessoriskola i jämförelse med Skola, Idrott och Hälsa-projektet
AimThe aim of this essay is by using a motor skill track to see if there exists any remarkable difference in the motor skill profiles between pupils from our montessori school and the mean score in the "Nytidstest". The questions at issue we had were: How is the motor skill profile on pupils in year 2 and 3 practicing montessori pedagogy? Is the motor skill profile superior or inferior to the mean score in the "Nytidstest"? What factors, if any, concerning the montessori pedagogy affects the results of the test?MethodWe used a motor skill track consisting of 8 stations sellected from the "Nytidstest" adapted for year 3 (the original test consists of 16 stations). Pupils from year 2 and 3 in our chosen montessori school were tested in groups of 4-5 persons each. We made the tests on two occasions each lasting for 100 minutes at the time.
Heterogenitet i skogsbestånd : faktorer av betydelse för artrikedom och förekomst av småfåglar
Denna studie undersökte hur heterogenitet i skogsbestånd samt omgivningsfaktorerna träddiameter, variation i träddiameter, död ved och lövinslag påverkar förekomsten av 18 skogsfågelarter i södra Sverige. Fågelinventeringen utfördes med hjälp av linjetaxering längs 100 meter långa transekter. Omgivningsfaktorerna mättes i varje transekt i fem provcirklar med diametern 10 meter. Analysen av träddiameter visade att det främst var diameter på barrträd, men inte på lövträd som inverkade på förekomsten av fåglarna. Sambanden mellan diameter på barrträd och totalt antal fågelarter var övervägande negativa vid 0-30 centimeter i diameter och övervägande positiva vid 30-80 centimeter i diameter.