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957 Uppsatser om Forest ecosystem - Sida 1 av 64
Hur en ökad marktemperatur påverkar fotosyntes och markrespiration i en boreal skog
During the year of 2008, a powerful earthquake hit the southern part of Iceland, which changed the geothermal conditions in the area around the city of Hveragerdi. Elevated soil temperatures in a nearby forest plantation have contributed to a unique opportunity for researchers to study how an increased soil temperature affects the boreal Forest ecosystem, something that partly can be connected to the climate changes which are happening today. The boreal forest is representing a carbon sink and a buffert for the emissions that occurs. Changes in this ecosystem will for that reason contribute to major impact for the global carbon cycle. To study the impact of how elevated soil temperatures affects different processes in a plantation of Sitka spruce, studies were made on the photosynthesis of the trees and the respiration from the soil.
Skolskogen som ekosystemtjänst : En fallstudie om det sociala värdet hos skolskogen
The concept of school forest was drafted in 1970 by the Forest in School organization and is defined as an area occupied by a school for outdoor educational activity. The main purpose of this study was to examine how schools use the school forest in practice, how it can be linked to the forest as an ecosystem service and find out how the forest is taken into consideration in the spatial planning. The study is mainly qualitative in nature and has been based on interviews conducted with educators engaged in outdoor education at four selected schools in a municipality in Sweden. Focus has been on the cultural ecosystem services for school forest, for example the physical characteristics that are considered as positive, forest influence on students' physical / mental health and the educational benefits available to be in the woods. Search has also been made to see how the forest is taken into consideration in the spatial planning and also what a contract agreements involves.
Maximerande av ekosystemtj?nster i urbana kulturmilj?er: En fallstudie om tr?dval i Pommerska tomten i Mariestad
The purpose of this work has been to explore what ecosystem services a small green area in an urban
environment can offer and whether specific trees can be used to maximize regulatory ecosystem
services in a cultural-historical environment. Additionally, it investigates whether there is any
difference in ecosystem services depending on whether these trees, or trees that better fit into the
cultural-historical environment, are used. Through simulations and comparisons with existing trees in
Pommerska tomten, Mariestad, Sweden, a pocket park within a national interest area, different
hypothetical tree planting options are analyzed and evaluated. To measure ecosystem services, the
website My-Tree, developed by the US equivalent of the Department of Agriculture, was used. By
inputting data about the tree, such as location, species, vitality, stem diameter, and solar exposure,
My-Tree calculates some of the ecosystem services the tree provides.
Bioenergy from the forest ? a source of conflict between forestry and nature conservation? : an analysis of key actor?s positions in Sweden
Bioenergy from the forest has been heavily debated in Sweden for several decades due to the interest of society to decrease dependence upon fossil fuels and limit the effects of climate change. The actual use of bioenergy from the forest has shifted over the years but increased during the last decades. Private actors within forest and nature conservation sectors play an important role for the development of bioenergy from the forest as well as for the debate and the implementation of political goals. Forestry in Sweden is characterised by ?freedom under responsibility? for private actors and the perspective of governance is valuable for studying actors and discourses.
Ekosystemtjänster : En studie av kunskapsläge, hinder och strategier inom kommunal förvaltning
?Ecosystem services are the ecosystems direct and indirect contributions of ecosystems to human well-being.? In order to reach the generation target and the environmental objectives it is important to increase the awareness of biodiversity and ecosystem services and it?s importance to human welfare and simultaneously highlighting the value of ecosystem services. The value of ecosystem services should be integrated into economic standpoints, political considerations and other decisions in the society. In today?s society there is a problem concerning that the value of ecosystem services are not considered in economic terms, which can result in solutions that are unfavorable for our welfare (Ministry of Environment, 2012).
Enkätundersökning hos markägare inom SCA Skog Ångermanlands Skogsförvaltning
This report is a joint venture with SCA Forest, Ångermanlands forest man-agement area. The purpose of the study is that SCA Forest wants to know what the landowners in Ångermanlands forest management area think about SCA Forest and who they deliver their timber to.
SCA Forest is the largest private landowner in Europe, with an area of about 2.6 million hectares. Today, SCA offers lumber, wood products, tis-sue and packaging and has factories all over the world. SCA Forest has five forest management areas in the north of Sweden, with the headquarters in Sundsvall.
A questionnaire was sent to 265 landowners, where they had to answer 15 questions with possibilities to give comments. The survey was sent out on 21 of February with a response requested by 3 of March
125 landowners responded to the survey, giving a response rate of 47%.
Effekten på nedbrytningen av rötter vid tillförsel av ammonium sulfat i en granskog i sydvästra Sverige
Decomposition of organic matter is a critical process in the ecosystem, which involves many essential biotic and physical parts. Decomposition is therefore an important process both above and below ground. The rate of decomposition is dependent of many environmental factors for example: pH, moisture and supply of oxygen. The decomposition can therefore be affected by large scaled environmental influences, such as acidification and climatic changes. The root litter in the forest is in different ways affected by acidification, liming and manuering.
Hur väl skogsägare följer åtgärdsförslagen i skogsbruksplanen : en enkätundersökning
This rapport is about how often private forest owners follow the measures proposed in their forest management plan. The survey is made in cooperation with the forest-owners association Norrskog.
The private forest owners are relatively satisfied with the forest management plans and with the measures proposed. There are some differences between those who live on or near their property and those who live many miles away.
The forest owners who live on their property are those who follow the proposed measure of precommercial thinning to the largest extent. That group also values precommercially thinned stands higher than thinned stands.
The complete opposite is the case for the group that lives far away from their property.
Almost all of the respondents thought that the forest management plan would be or had been a good help in the decision making about the forest..
Enkätundersökning om skogsägare inom Norrskogs upptagningsområde
The purpose of this report is to find out what different preferences forest owners have in the region where Norrskog have their operation area, what they prefer and think about Norrskog. The purpose is also to compare some of the questions to a similar study that was made in 2008.
The study is made in cooperation with Norrskog which is a forest owner cooperative. Norrskog has about 13 000 members which is about half of all forest owners in the region.
To get the answers from the forest owners, questionnaires were sent out by mail. 371 were sent out and 102 came back. There were more members of Norrskog that responded than it was nonmembers.
The results indicate that the forest owners have long term perspectives, their priorities are to nurse the forest so they can get the profit later on.
Enkätundersökning om rådgivningen kring skogsbruksplaner utförda av Norra Skogsägarna
This rapport is based on a survey that was sent to 196 randomly selected forest owners, who during 2013 ordered a forest management plan from Norra Skogsägarna. The purpose was to examine how forest owners experienced advice given by an inspector based on their forest management plan..
Skogsägarenas inställning till markberedning i västra Värmland
According to a press release from the Swedish forest agency in May 2014, western Värmland has the worst regenerations of forest result in the whole of Sweden. The scarification frequency is low in the area. AB Hilmer Andersson want´s to know if the private forest owners want to scarify more than is done today. Good regeneration is important for private forest owners so they can have a long term forest management and economics of their forests.
This academic study is done as an opinion poll. The purpose of the study is to see how big the interest of scarification among the private forest owner is.
Enkätundersökning till medlemmar i Västra Värmland och Dals Skogsägareförening
On behalf has a questionnaire been conducted with the aim to find out the members opinion regarding the management of the association. The survey showed that association has a strong position locally and that the forest owners generally are satisfied with the management and the competence among the forest super visors. The main opinion is that the association can improve the communication with the forest owners before as well as after the sale of forest products..
Enkätundersöking om vad privata skogsägare vill se på en skoglig aktörs hemsida
This degree projects made on behalf of AB Karl Hedin to find out what private forest estate owners would like to have on a forestry-related website. The reason for finding out what estate owners think of the forest websites is to meet needs of the forest owners who are customers of AB Karl Hedin. Marketing and use of the Internet for information search for products and services are two key concepts in this study. To be able to perform the study, a telephone survey was made to find out what estate owners want and what they are missing on a forest site. The survey can be summarized at following conclusion:
The marketing of AB Karl Hedin website must be stronger The forest owners want more information on forest business, prices and forestry services.
Enskilda skogsägares mål på avdelningsnivå ? en kvalitativ studie
Half of Sweden's productive forest land is owned by individual forest owners. Research studies show that forest owners have more objectives with their forest than a high net present value, and that the suggestions of the forest management plans doesn?t always correspond to
the forest owners? objectives.
Through a qualitative study we conducted a discussion about objectives at stand level with the aim of making a more specific formulation of the forest owners? objectives.
We asked about the forest owners' objectives at stand level, what forest management they conduct in order to achieve the objectives and how this management affects the net present value of the property. Based on the results of the interviews, we analyzed what kind of factors decide where the objectives place themselves in the landscape and if the objectives at stand level are consistent with the overall objectives for the property.
Many forest owners questioned the idea of talking about objectives at stand level, and they didn?t always have their objectives clearly defined.
Markägares val av skogspartner :
Derome Skog AB is a purchase company whose main task is to provide Derome Timber's sawmills in Halland with timber raw material. Because of the very hard competition in the roundwood market it is important to know what kind of purchase offers are required in order to buy a valuable product from forest owners.This study aims to elucidate the crucial factors when private forest owners choose to harvest and sell their forest. As base for this study, a questionnaire has been performed with private forest owners. The result of the study shows that it is not particularly often that the timber price is the crucial factor why the forest owners choose to harvest and sell the forest products; i.e. timber, pulpwood as well as energy assortments.