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993 Uppsatser om Forest fuels - Sida 14 av 67

Possibilities for, and attitudes towards, a potential reintroduction of wild forest reindeer Rangifer tarandus fennicus Lönn. to parts of Sweden.

AbstractThe wild forest reindeer is a subspecies of the reindeer. Wild forest reindeer earlier had awide distribution range in Sweden, but it was extinct in the middle of the 19:th centurybecause of extensive hunting. In Finland, the w.f.reindeer was extinct a few decades later bysimilar reasons. Later they migrated back to the eastern parts of Finland in the middle of the20: th century. Around 1980, the w.f.reindeer was actively rentroduced to western Finland,and there the population has had a positive development.

Svenska hushålls vedarbete : en fallstudie i Umeåregionen

In Sweden there are 354 000 private individuals owning forest. Of these forest owners there are at least two thirds that are self-employed, which means that about 215 000 forest owners conduct some kind of work in their own forest. Those numbers do not refer to firewood production, but every year 7.3 million piled cubic meters of firewood are used for heating Swedish households. This implies that many households are also producing firewood. The objective of this study was to assess and analyse the small-scale firewood production in the Umeå-region in terms of persons engaged in the work, equipment used, produced volumes and share of forest-owning households involved in these activities. According to results from a questionnaire, the average firewood producing person is a man between 40-60 years old.

Biogas : En systemanalys av Solna Stads matavfallsprocess

Global warming is a huge issue that humans have contributed to through over-exploitation of natural resources and extensive usage of fossil fuels. Now more than ever, we need to embrace a recycle thinking and reuse our waste, for example through producing biogas from our food waste. The purpose of this report was therefore to identify the energy usage and emissions resulting from the biogas chain which spans from Solna Stad to Uppsala Vatten. Furthermore, potential efficiency improvements were to be identified and proposed. This report focused mainly on the first part of the biogas chain that includes the collection of the food waste and the reloading process.

Släktöverlåtelser av skog och jord i två byar i Sverige

The way to acquire forest in Sweden from parents has been unequal, men were prioritized over women, which was the traditional inheritance pattern. Research has made this clearer by using gender, which ?values? our stereotypes of sexes and can help us understand inheritance patterns. The gender determined who would inherit but also the form of ownership, praxis, property rights, regulations, power and work invested made by a sibling could influence. The purpose with my study was to find what conditions governed inheritance of forest on the properties I investigated and what influence gender had.

Hur bokskogslagen blev till ? konflikter och lösningar 1964-1974

During the early Middle Ages beech forests (Fagus sylvatica L.) spread out over large parts of southern Sweden. They had a crucial role in human survival for hundreds of years. For various reasons, the beech forest area has decreased since the 1600s. Spruce planted on former beech forest land was the primary reason for the decline during the second half of the 1900s, which made many worried about the future of the beech forests and led to a beech forest act in 1974. This study describes the background to the beech forest act based on parliamentary official documents.

Brandrelaterade insekters lokala artrikedom i förhållande till olika miljövariabler : Fokus på betydelsen av konnektivitet på brandfält i boreal skog i Västerbottens län

The last century, forest fires have decreased in frequency due to efficient fire-suppression along with the growth of the industrial forestry. Since 1990, fire has been reintroduced under controlled forms to recreate burnt habitats. Many species that are dependent on, or benefits from, forest fires have increased since fire was reintroduced. The importance of connectivity is often addressed in ecological research. This is particularly important for species dependent on short-lived habitats such as burnt forests.

Ethanol for Scania's Future - A Scenario Based Analysis

Abstract Title: Ethanol for Scania?s future ? A scenario based analysis Authors: Anna Hansson and Julia Persson Tutors: Annette Cerne ? Department of Business Administration, Lund University Jonas Holmborn ? Head of Advanced Combustion, Engine Development, Scania Lennart Thörnqvist ? Department of Energy Sciences, Faculty of Engineering, Lund University Problem: Oil-based products are the dominating fuels in the transport sector but alternative fuels are currently challenging the world-wide dominance. The large number of alternative fuels that are under development at present makes the future fuel-market impossible to predict. Scania?s ethanol project is associated with a number of uncertainty factors that are beyond the company?s control.

Utveckling av en effektmätare för landsvägscykling

Over 90% of forestry work is carried out today by contractors, thereforeclear agreements between the client and the contractor it is of utmostimportance. Contract Packages for work within the forest sector (APSE) is acollection contract templates that the industry jointly developed for thispurpose. The purpose of this thesis is to examine how forest contractors doto keep themselves updated of the current laws and government regulations,which channels are available to accomplish this and what possible obstaclesmay occur. 20 interviews were conducted with contractors engaged inlogging. The results show, among other things, the availability of and whichchannels most contractors use out of which aggravating circumstances existand how strong they are perceived and what is expected of the client in thisregard..

Betydelse av lövinslag, död ved och variation i träddiameter för artrikedomen hos småfåglar

Forest management contributes to the changes in forest structure by turning heterogenous forests of varied age into homogenous forests of similar age and thus affect bird species depending on different structures or habitats which are lost during forestry. In this report, a study was made to investigate how the amount of decidious trees, dead wood and variation in tree diameter affect bird diversity. The purpose of this study was to be able to give forest management guidelines to increase bird diversity. This study was conducted by investigating 65 transects in forests of different structure south of Linköping, Sweden. Along the 65 transects, birds were inventoried as well as the vegetation.

Miljöbilsanvändning : En attityd- och beteendeundersökning hos ägare av bilar drivna med förnybara drivmedel

The aim of this report is to give a picture of how attitudes and behaviours of owners of environment cars look like and how they can be influenced. The alignment lies on environmental cars which run on biogas and ethanol which both are renewable fuels. The starting point is to sort out if it is environmental thinking that controls the choice and use of an environmental car. The feeling is that there are many other factors that can be more controlling, for example the price and the quality of the car. The result of the questionnaire survey which is the foundation of the report shows however that those who buy an environmental car do it mostly because of environmental reasons.

Vitberget Skellefteå, ett kommunägt tätortsnära skogsområde ? föreningarnas och allmänhetens syn på hur skogen bör skötas

The question is who should govern and administrate a municipality owned urban forest? Should societies and the public be invited to participatory planning, who are the interested parties, could they be treated like a group and what are their opinions on administration and management? The study is carried out in a municipal owned forest Vitberget Skellefteå that is widely used by associations and individuals for recreation and training.This has led to several discussions in the local media about the management of the forest, especially in connection to harvesting. The work undertaken here has been to identify who has any interest in the management of the area. After identifying the interested parties, a selection of the societies, schools and pre-schools that actively uses the area as well as random individuals met in the area was interviewed. The questions asked can be divided into six main groups:? Communication with the municipality?s managers for the area? Interference from other activities? Views on forest management? Views on nature conservation? The uniqueness of Vitberget? Development opportunitiesThe crucial factors identified as being needed to succeed in managing an urban forest are long-term administration, information and communication.

Vad påverkar skogsägarnas naturhänsyn vid föryngringsavverkning i region Mellannorrland? :

The objective of this thesis was to investigate what influence nature conservation measures taken at regeneration felling. Factors analysed were the forest owners´ situation and their characters, and information activities from wood-suppliers and the Regional Forest Board (RFB). The inventory was performed with a posted questionnaire followed up by telephone to forest owners and a posted questionnaire to wood-buyers. The forest owners were grouped in three strata, depending on the quality results (D- polytax inventory) of the taken forest conservation measures, and for this investigation forest owners were sampled from the population in the tree groups. In total 73 % (41/56) of the sampled forest owners answered the questionnaire Group A (17 answers): Good judgement Group B (19 answers): Bad judgement Group C (5 answers): This group was formed from the forest owners that were informed, by RFB, about nature conservation measures and culture history consideration before the regeneration cutting.

Solenergisystem i Hammarby Sjöstad

Problems with the current energy system, which partially relies on non-renewable fuels, are increasingly recognized. Emissions of greenhouse gases from fossil fuels may speed up global warming, which in turn leads to a number of negative consequences. Nuclear energy is risky and relies on consumption of a scarce resource. This leads to a demand of renewable energy that is also economically feasible. One possible renewable source of energy is solar energy.

Omvärldsbevakning och omfallsplanering i samband med stabsarbete

Over 90% of forestry work is carried out today by contractors, thereforeclear agreements between the client and the contractor it is of utmostimportance. Contract Packages for work within the forest sector (APSE) is acollection contract templates that the industry jointly developed for thispurpose. The purpose of this thesis is to examine how forest contractors doto keep themselves updated of the current laws and government regulations,which channels are available to accomplish this and what possible obstaclesmay occur. 20 interviews were conducted with contractors engaged inlogging. The results show, among other things, the availability of and whichchannels most contractors use out of which aggravating circumstances existand how strong they are perceived and what is expected of the client in thisregard..

Verktyg för bedömning av kontrollrumspersonal vid simulatorträning

Over 90% of forestry work is carried out today by contractors, thereforeclear agreements between the client and the contractor it is of utmostimportance. Contract Packages for work within the forest sector (APSE) is acollection contract templates that the industry jointly developed for thispurpose. The purpose of this thesis is to examine how forest contractors doto keep themselves updated of the current laws and government regulations,which channels are available to accomplish this and what possible obstaclesmay occur. 20 interviews were conducted with contractors engaged inlogging. The results show, among other things, the availability of and whichchannels most contractors use out of which aggravating circumstances existand how strong they are perceived and what is expected of the client in thisregard..

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