Sökresultat:
73 Uppsatser om Birch skis - Sida 2 av 5
Ett gammalt kulturlandskap i Vindelfjällen : skogshistoria och markutnyttjande i Vuornavagge under 300 år
Humans have inhabited mountainous areas in northern Sweden since the end of the last glacial period, ca 8000 B.P., and their presence has marked the landscape in various ways. Older traces include the remains of hearths and dwelling sites, but there are also remains, such as culturally modified trees (CMT's), resulting from more recent activities in forested areas. This study aimed to document how people, both indigenous Sami's and Swedish settlers, have used an area northwest of Ammarnäs in Västerbotten, during the last 300 years, and what traces their activities have left in the area. I used historical records as well as an inventory of CMT's in the area to address this aim. Historical records of Sami activity are meagre, but it is clear that the people of the Ran and Gran Sami villages utilized the area long before 1500 A.D.
Biomassauttag vid delkvistat sortiment i klen gallring
The purpose of this study was to estimate the removal of biomass in connection with thinning operations in young stands that are dominated by small diameter trees. The economy of such operations depends on the products generated as well as the performance of the harvesting systems. Conversion tables designed to predict the outcome based on harvesting method was another goal of this study. Removal of biomass affects the nutrient composition of the site. Therefore it is a purpose that this study will provide researchers with some variables that can be utilized when studying this aspect.
Trees were harvested and divided into bunches based on diameter.
Betula : arter och sorter
As birch is one of the most common trees in Sweden, and probably one of the easiest for
someone who lives here to identify, it is interesting to note that most people do not know
how variable the genus is and how widely it is distributed across the northern hemisphere.
One can find birch growing at both high and low elevations, demanding different soil
conditions and preferring varying amounts of sunlight. Many people may also be surprised to
hear that the colour of the bark can vary from bight white to almost black, and different
shades of pink, orange and red can also be displayed. This, together with the astonishing
beauty of the genus, the important role as a pioneer in many ecological systems and the
difficulty in sorting out the taxonomy of the genus, constitutes the background of this thesis. The thesis is written at the Department of Landscape Development in Alnarp, Sweden with Kenneth Lorentzon, researcher at the Swedish University of Agriculture as a supervisor. The aim of this thesis is to highlight which species and cultivars within the genus Betula could be appropriate for horticultural use in Sweden.
Björkämnesförsörjning i ett möbelproducerande företag
Detta examensarbete handlar om hur ett möbelproducerande företags råmaterialförsörjning går till. Företaget som har varit värd för arbetet är ett möbeltillverkande företag som heter Stolab och ligger i Smålandstenar. Studiebesök och intervjuer har hos Stolab och deras leverantörer legat till grund för det arbete som vi har utfört. Ämnen som är behandlade är kvalitetsaspekter på råmaterialet samt hur relationerna mellan kund ? leverantör fungerar.
Plantering av gran (Picea abies) på kalhyggen och självföryngring under högskärmar av björk (Betula pendula och Betula pubescens) : föryngringsresultat 7-10 år efter avverkning
The aims of the silvicultural method natural regeneration of spruce (Picea abies L. Karst) in birch (Betula pendula and pubescens) shelterwoods are to establish a new stand of tree seedl-ings and to protect those from high groundwater levels, frost damages and grass competition during its first life years.
The aim of this work has been to (i) describe how shelterwood and stand characteristics influ-ence the results from using natural regeneration of spruce protected by a shelterwood of birch, and to (ii) compare those regeneration results with planting of spruce after soil scarification in clear-cut areas.
Totally 17 harvesting sites have been inventoried and 15 of those included natural regenera-tion in birch shelterwoods, and two were subjects to soil scarification and planting of spruce. The sites represented 7-10 year old final cuts and are located in the coastal (eastern) region of the province of Norrbotten in Sweden. In all areas shelterwood and stand characteristics, as well as the number of main crop seedlings and the height of the highest main crop spruce seedling, were estimated and registered in all areas.
Produktivitet och lönsamhet vid skörd av skogsbränsle i klen björkgallring :
The aim of the study was to compare productivity in first thinning of birch stands, when either energy- or pulpwood was harvested. The systems total profitability was also compared by including forwarding and chipping costs. A Gremo 950 HPVR harvester was used and the same driver was used under the entire study. During the pulpwood harvest a Logmax 4000b harvester head was used and a feller buncher head made by Silvatec was used during the energy wood harvest. Six study unit pairs were located in a birch dominated stand outside Ängelholm in Skåne.
Härjedalens fjällängar ? en flygbildsstudie över igenväxningen av subalpina ängar
Uppsats för avläggande av filosofie kandidatexamen i Kulturvård, Landskapsvårdens hantverk, 15 hp, [2014].
Lövskogens förändring i eklandskapet söder om Linköping : 1927 jämfört med 2013
The forests of Sweden are constantly changing. Map studies indicate that the amount of deciduous trees in Sweden has decreased in recent years in favor of the coniferous trees. The National Forest Inventory has since the early 1920s monitored the Swedish forests and in recent years has made the old data digitally available. In the present project, we have investigated how the numbers of stems in different diameter classes have changed for birch and other deciduous trees. The inventory was conducted in the same manner as in the first forest inventory.
Clear-cut and substrate characteristics important for the occurrence of the beetle Upis ceramboides
Disturbances, such as fire and wind, are important for saproxylic beetles (= beetles depending on decaying wood) to gain substrate in boreal forests. Clear-cutting is an example of a man-made disturbance. Measures such as prescribed burning have been made to resemble natural disturbances. The aim of this study was to see which clear-cut characteristics are important for the occurrence of the saproxylic beetle Upis ceramboides.
This is a species favored by open habitats and is said to respond positively to forest fires. The distribution area in Sweden for this species has decreased during the last two centuries and I wanted to see if there were differences between clear-cuts in Hälsingland, where it is very
rare and decreasing, and Norrbotten where this study was conducted.
Större svartbagge Upis ceramboides i norra Hälsingland : förekomst, substratkrav och effekter av skogsbrukets naturvårdsåtgärder
Many wood living insects are considered threatened by modern forestry due to the reduction in amount of dead wood. During the last decade various methods have been used to enhance the quantity of dead wood in managed forests. However little is known how and if these methods are aiding saproxylic insects. The threatened tenebrionid beetle, Upis ceramboides, is already extinct in southern Sweden. It develops in white rotted dead birch (Betula spp) and requires sun-exposed sites.
Vinterhjälpmedel till rollator : Framtagning av en funktionsprototyp för att underlätta rollatoranvändandet vintertid
Rapporten innefattar hur en funktionsprototyp till ett vinterhjälpmedel för en rollatorutvecklats. Alla de väsentliga stegen i utformningen beskrivs grundligt, från det att idéerkläcks tills dess att prototypen är klar för tillverkning. Utifrån en idé om ett vinterhjälpmedelhar arbetet fortlöpt till en prototyp bestående av en konstruktion med skidor som enkeltmonteras på rollatorn. Arbetet berör ergonomiska analyser på användande av prototypen samtdimensionering.Stor vikt under utvecklandet har lagts vid människan och hennes funktion för att få en produktanpassad efter rörelseapparatens förmågor och begränsningar.En nyhetsgranskning över produkten har utförts där utfallet var positivt, vilket innebär attprodukten nu är i ett läge där en patentansökan planeras.Produkten lämnar utrymme för vidareutveckling..
A Cross-Country Skiwear Collection for Beautiful Women
This thesis deals with cross-country ski clothing for non-competitive women. Women in this category look for different clothing features in comfort and aesthetics than male top athletes, for whom cross-country skiwear today often seems to be designed. In this thesis the demands of these women have been mapped out by an interview with a reference group of users. The ergonomics of exercising in the winter outdoors are naturally a base for the collection. The collection consists of three functional layers of garments.
Bedömning av skada på naturmiljö och rennäring för den föreslagna fjällvägen mellan Borgafjäll och Saxnäs : - Väg- och transportforskningsinstitutets metod för bedömning av skada på bevarandeintressen
Assessment of impacts on nature and reindeer husbandry by the considered mountain road between Borgafjäll and Saxnäs- Swedish National Road and Transport Research Institutes method for assessment of damage to heritage assetsThere are plans regarding the building of a new road from Borgafjäll/Båtas to Saxnäs, and two road alternatives have been presented. The road has been localized to an area which is protected as a nature reserve and listed as a Nature 2000 area. This report aims to determine the effects on the Nature 2000 area and reindeer husbandry, and to be a source of knowledge for future environmental impact assessment in that project. In order to assess the impact on nature values and reindeer husbandry a method from the Swedish National Road and Transport Research Institute (VTI) has been used. A literature review has been made to prescribe the effects and consequences.
Produktivitet vid stubblyftning :
Stump wood was used between 1850 and 1950 for production of tar and as firewood. In the 1950s the use decreased because of the introduction of the cheap fossil oil. In the 1970s stump wood became an interesting issue again as a raw material for the pulp industry. Stump lifting has today become a possible source for bioenergy. The objectives with this study were to investigate the productivity of stump lifting and stump extraction, and to analyse the economy.
?Den stora förändringen?. En mönsterkollektion höst/vinter 2013
The big change is a project where I created patterns on fabric. It is a collaborative project with Lotta Niemi. She studied fashion and textile designers and tailors from the Swedish School of Textiles in Borås and University of Technology in Sydney. The collaboration was to create designs on fabric for her upcoming clothing line for women, Fall / Winter 2013. The clothes will be sold online, in stores in Sweden and Japan.For Lotta Niemi?s clothing line, I wanted to create exclusive designs, rich patterns that worked out handmade and digital.