
Sökresultat:
2470 Uppsatser om Forest history - Sida 21 av 165
Goliatmusseron (Tricholoma matsutake) - kräver den en kontinuitet av träd? :
Modern forestry management may disadvantage some mykorrhiza forming fungi because; they are dependent on late successions and cannot survive the constantly recurring breaks in the continuity of their host tree. For this study the specie goliatmusseron (Tricholoma matsutake) was chosen to investigate this possibility. In Sweden T. matsutake is found in greatest amounts north of Örnsköldsvik on glacifluvial sandy soils in association with pine trees and reindeer lichens.
Seventy two forest stands where the specie previously had been found were studied; 62 in the northern part of Sweden and ten in the southern. Several indicators were studied to find out if these stands have had a continuity of living trees.
"Om man inte vet hur ett gammalt spöke ser ut, hur ska man då kunna känna igen gengångaren när man möter den?" : En undersökning av hur dagens läromedel för gymnasiet handskas med Sveriges rasistiska och fördomsfulla förflutna.
My goal with this thesis was to investigate how educational material in the subjects of history, geography and social studies relate to the fact that Sweden has a history marked by prejudice and racism.I have chosen to focus on four areas in the Swedish history that I think deserves some special attention, these four areas have been: the Swedish slave trade on the island of Saint Barthelemy in the eighteenth century, Swedish eugenics and oppression of the Sami people, forced sterilization services during the twentieth century and Sweden's aid and concessions to Nazi Germany during World War II. With these areas in focus I?ve studied three textbooks in the courses Geography A, Civics A and History A to se how they deal with prejudice and racism in the Swedish history.The result I have come to is that none of the books addresses all four of the areas I?ve focused on. Even if the books are taken as a whole the image that they convey is not adequate. In the event that the four areas that I?ve focused on been mentioned the information have been scant and rarely, if ever, has Sweden been paired with phenomenons like racism, slavery, colonialism, eugenics, forced sterilization, etc.
Vederlagsgrundande mätning med skördare
This study was performed in collaboration with Moelven Skog AB, Örebro district. The purpose of the study was to review existing literature in order to describe the current status of harvester based measurement technology as the way to provide information for calculating payment to the forest owners. In addition to this, a short survey was conducted to find out how a switch to harvester based measurement would affect the administrative workload on timber purchasers working for the district.
The literature study shows that the harvester measurement technology is ready to use if it is combined with well-established routines for control of the harvesters, methods for automatic quality indexing of the timber and ways of creating pricelists specially adapted for harvester measurement. Pricing each stem seems to be the most promising method. Stem pricing has several benefits.
Järnets introduktion i Skandinavien : -I ett arkeologiskt perspektiv
The views on and the knowledge of the introduction of iron to Scandinavia have change by the history of archaeology. The results and discussions are put in the context of time and how that time is reflected in their work and texts. This limits that scholars put up to orientate themselves conceal the complex reality. The limits are changing all the time and is dependent of time and person..
Neutralitet med förhinder : En undersökning i hur bilden av Sveriges neutralitetspolitik under andra världskriget har förändrats i läroböcker i historia
Sweden?s role during the Second World War has been a matter that has been under much debate since the war?s end in 1945. The debate has however ebbed and flowed and established a discourse that Sweden was forced to give in to German demands and did so to avoid conflict that would have severely damaged Sweden. However, in 1991 a Swedish journalist Maria-Pia Boëthius published a book known as Heder och Samvete in which she explained that the Swedish concessions to Germany during the war were made out of profit rather than giving in to German demands. This sparked a debate that ended with the establishment that Sweden compromised and even broke its neutrality in favor to gain profit from the war.
Följdeffekter av olika användningssätt för vedråvara : en ekonomisk studie
Since the turn of the millennium a sharp increase in the interest for bio energy has been observed. Important reasons for this growing interest can be due to the fact that fossil fuels are a finite resource. A net discharge of greenhouse gases occur when fossil fuels are burned. The discharge of greenhouse gases are considered to be the main reason to the greenhouse effect. Means of control to increase the use of bio energy has been introduced and, as intended, the use of bio energy has increased.
As a result of the legal provisions the ability to pay for bio energy has increased, which the forest industry view as a problem.
Arkiv för vem? : En undersökning om arkivpedagogik och tillgängliggörande
This thesis focuseses on archives and availability. The general public seem to have trouble finding their way tothe actual archives even though most archival institutions are easily accessed and provide interesting material.Maybe it is because archives are generally not as well known as other institutions within the ALM-area, eventhough the need to know ones history and identity is considered mainstream. Whether or not history takes off atthe archives is a complex question to answer. Archives, however, certanly contribute to our ideas of earlier timesand the concept of history.I have examined what archives do to make these contributions known to the general public and to whatextent they make their material avaliable. I have also looked into archival pedagogy since it is often connected toavaliability.
Tätortsnära skogsbruksplan i Borås stad
This report is part of an Bachelor of Science work in forestry, conducted for the community of Borås, Sweden. In order to create a forest management plan for the area of Hestra, a survey was conducted. People living in the area were given the opportunity to reply to the survey. The questions in the survey are both personal and forestry-related. The aim is to reach out to the different categories of people when it comes to age, living and the different aspects of visiting the woods.
Migrationen från den amerikanska södern : Bakgrund, orsak och verkan
Jag har valt att skriva om migrationen i USA mellan 1900 och 1950, detta eftersom dessa årtal var då migrationen var som störst och den har också gått till historien som bokstavligt talat just en folkrörelse.Det har pågått en jämn ström av in- och utflyttning från södern men jag tänker fokusera på den migration som skedde mellan 1900 och 1950.Det som är intressant med migrationen är att den förändrade hela USA genom att den visade att svarta kunde förändra genom att förflytta sig eftersom man därigenom började ändra infrastruktuen och maktbalansen..
Kommunägd skog i Sverige : en enkät- och intervjustudie av de tätortsnära skogarnas ekonomiska och sociala värde
This Masters thesis is performed at the request of the National Board of Forestry in order to investigate how the Swedish municipalities use their forests. The study is of general character with emphasis on the social values of the forests.
The municipalities? purposes with their forests have varied over time, but lately the social aspects have been recognised as interesting. The social values of the forests can be defined as the values from the forests that contribute to the wealth of humans. This has socio-economic importance for the municipalities.
The study was performed as a quantitative questionnaire survey, complemented with qualitative interviews.
Ekonomi vid uttag av långa toppar som skogsbränsle i slutavverkning :
The market for biofuels from the forests have had a positive development and the job initiators for this master´s thesis wanted to examine the profitability of a method for harvesting forest fuel, which was unfamiliar to them. The method was the ?long tree tops-method?, here called the LT-method.
The LT-method is characterised by the fact that timber is harvested as the only roundwood assortment while the rest of the stem, which in other cases would become pulpwood, is harvested as forest fuel together with the logging residues. The method is based on the assumption that advantages in handling of the forest fuel assortment such as increased load weights for forest hauling and truck transportation, should compensate for the lower price for pulpwood when sold as forest fuel.
The aim of the study was to compare the profitability of the LT-method with the GROT-method (harvest of timber, pulpwood and logging residues) and conventional logging without any harvest of forest fuel, and aslo to try to identify factors affecting the profitability of the different methods.
Deadwood in piles or distributed : does it make any difference to saproxylic beetles?
Piles of deadwood are often retained in forests after management to support the biodiversity ofsaproxylic organisms which depend on deadwood to survive. Any knowledge about the crucial role ofpiles as suitable habitat of saproxylic organisms compared to single distributed deadwood objects thatare around the piles would help conservation actors to motivate more forest owners to supportsaproxylic organisms during their management. Therefore to give facts to this the saproxylic fauna ofdifferent pile positions (up and low) was studied and compared to distributed deadwood samplesaround each pile. Our study was focused on saproxylic beetles. Some other parameters such asdiameter, deadwood volume, pile volume and decay stage were assessed to define any effect.
Carbon offset management : worth considering when investing for reforestation CDM
The idea for this project was initiated together with one of the leaders in the forest, paper and packaging industry. To get through an A/R CDM process the company is exposed to the risk of failing the process or that the overall costs will exceed the benefits of the project. This would delete the incentives to invest in GHG removals compared to purchasing emission allowances on the carbon market. The questions that have been raised and needs clarification in the thesis are the following:? From a company perspective, what are the incentives for implementing Forest Clean Development Mechanism (CDM) projects?? What is a likely financial outcome of a reforestation CDM project on degraded land in the Guangxi province of the Peoples Republic of China?? When does an investment like this break even with the cost of buying market based carbon emission allowances? The objective of this master thesis is to carry out a research about the incentives for forest, paper and packaging companies to invest in reforestation through the clean development mechanism.
Impact of Eucalyptus plantations on pasture land on soil properties and carbon sequestration in Brazil
Soil organic carbon (SOC) stocks and fluxes in forest ecosystems are influenced by natural and human disturbances. In the tropical regions the highest impacts on disturbance in forest C cycles are related to human activities such as conversion of natural lands to cropland and pasture areas and to forest plantations. The disturbances in the forest C cycles will release CO2 emissions to the atmosphere triggering global warming. In this study the focus was set in subtropical soils in Brazil, south extreme region of Bahia. The aim of the study was to investigate whether reforestation of Eucalyptus plantations under former pasture areas will help mitigate climate change through carbon sequestration.
Till synes orörd skog : naturvärden och kulturhistoria i Rekdalen under 400 år
Nature conservation has for a long time been founded on the assumption that high ecological values depend on low human impact. In Sweden this has led to forests with these characteristics being strictly protected from human influences. However, it is also known that historical land-use can enhance ecological values in forests. Mountainous forests in Sweden, which have not been affected by modern forestry, have for a long time been considered as untouched by people. However, Forest history research has in recent years shown that even these areas have been used by people for a long period of time.