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370 Uppsatser om Hollow trees - Sida 18 av 25
Realisering av en modulär skogsmaskin - En skalmodell
Wood for commercial use is harvested from forests using forest machines like harvesters which folds, branches and cuts trees and forwarders which transports logs to a landing area for further transport to a processing facility. Future forest machines have to be much gentler to the machine operators and forest soil than today's machines. Hence new machine solutions must be developed and tested. A practical way is to develop a physical scale model which can be used as a test-bed to incorporate different types of solutions for suspensions, cabin damping, tires and tracks, crane and overall architecture. The aim of this project was to develop such a 1:5 scale model of a forest machine, named as ?Skogbil.A scaling strategy was employed to arrive at important scale dimensions and specifications ofSkogbil which would be comparable to the full scale model.
Uppsalas stora stadsträd : att ersätta Fyrisåns hästkastanjer
Detta kandidatarbete syftar till att undersöka vilka träd som kan vara aktuella vid en eventuell ersättning av hästkastanjerna vid Östra Ågatan i Uppsala. Arbetet
syftar också till att förklara vilka komplikationer träd möter i dagens städer, såsom vattenbrist och markkompaktering.
Delen rörande trädens förhållanden utfördes med hjälp av litteraturen Trees for tough urban sites av Henrik Sjöman och med hjälp av Tom Ericsson som specialiserar sig på botanik och ekologi. Jag besökte Östra Ågatan för att bekräfta vilka begränsningar träd i dagens städer har. För artval användes boken Stadsträd från A till Z av Rune Bengtsson, på grund av dess fokus på träd och stora artrikedom. Kriterier på storlek och tålighet som sattes upp hjälpte i urvalsprocessen och allvarliga trädsjukdomar togs i beaktande och därefter betygsattes trädens lämplighet.
Jag erhöll resultaten att städer är ganska ogästvänliga platser för träd men att Östra Ågatan ändå är fullt acceptabel som växtplats.
Scenerier i glas - ett projekt om mönstermoduler
The present project was initiated with the aim to create pattern modules for use in public environments. My intention was to let the properties, of the specific materials used, have a marked influence on the realisation of the final form. I also wanted to find a material, which is suitable from the perspective of sustainabilityand possibilities to create modules from it. The work was initiated with a study of some candidate materials and many sketches before I finally made my choice. My decision was clear after a visit to the company Glasfabriken inKalmar.
Rotpostvolym = stämplingslängd?
This work was conducted during spring and summer 2012 together with the company Uppsala Academy of Management as the principal. The two main objectives for the work are that:
? Make a comparison between the measured volume in the standing forest and the measured volume at the industry on Uppsala Academy of Managements actual stumpage sale volume to see how well it conforms.
? Examine if the buyers see any particular advantages or disadvantages of actual stumpage sale volume and what they think of Uppsala Academy of Managements actual stumpage sale volume and structure in general.
I chose to use actual stumpage sale volume from the tree years 2009, 2010 and 2011 in my work. I divided the actual stumpage sale volume following four categories which was pine, spruce, pine/spruce and seed trees. After that I picked out sixteen actual stumpage sale volumes from each category to be a part of the work.
Begravningsplatsen som offentligt rum : igår, idag och i framtiden
In this literature review the cemetery is studied in its role as a public space in an urban context. To be able to scrutinize the cemetery?s relationship to the public domain in the future, the cemetery?s background and history is studied in the beginning of the essay. The cemetery?s connection to the church, as well as a variety of other factors such as economic, architecture, hygienic aspects and different ideals has influenced the cemetery to be the place it is today.
Erfarenheter av utedrift med köttdjur i Sverige och Kanada :
Beef cattle wintering outdoors should be provided a shelter, e.g. a type of barn or corresponding. This type of production requires appropriate soil types and secured animal welfare. For example, a clean and dry resting place needs to be provided to the animals. To receive an exemption for buildings the farmer has to have something equivalent that provides an adequate shelter.
Stjärnhusen i Gröndal : bevara och förnya stjärnhusens innergårdar
It is sixty years since Sweden's first star-shaped housing estate was built in Gröndal, a suburb of Stockholm. Olle Engkvist, the building contractor, was the driving force behind the residential area and it was designed by architects Sven Backström and Leif Reinius. The estate comprises detached star-shaped houses suited to a more hilly terrain and terraced star-shaped houses on the flat land. The eight gardens of the terraced houses form the shape of a hexagon. It is these gardens, designed by Sven Hermelin and Per Friberg, which are the main focus of this thesis.
The buildings on the estate have recently been renovated and it is now time for the gardens to be restored.
Störningsregimer vid Skövde övnings- och skjutfält : Stridsfordons påverkan på olika naturtyper i militära övningsområden
A lot of habitats have declined or disappeared as the old cultural landscape changed to the modern agricultural landscape of today. Places such as power line corridors, racing tracks, gravel pits and military training sites have become refuges for many species associated with the old cultural landscape. These sites have been exposed to ecological disturbances that create the same type of habitats that were found in the old cultural landscape.The military training sites in Sweden has an impressive diversity of species. Disturbances from the military exercises have created habitats that are important for a wide range of species.The purpose of this thesis is to study some of the ecological disturbances occurring in the military training sites of the Swedish Armed Forces and examine how they affect different types of habitats. The thesis explains through litterateur and field studies the reason to the rich biodiversity often found at military training sites.
Utvecklingsprinciper för eftersatta naturlika dungar och ridåer
Nature-like plantations are areas that, by today?s maintenance procedure usually gains low prioritiy and are forgotten. Most nature-like plantations are currently disadvantaged and have in many cases grown up and formed dense,impenetrable and brushwoody green volumes. These green volumes is rarely used, but usually only fills out gap surfaces. With proper care nature-like plantations can become health promoting environments in the increasinglyhardened urban environments.How vegetation systems work and how trees and shrubs interact is dependent on many factors.
Metoder för att undersöka effekterna av naturvårdshänsynen i skogsbruket efter den nya skogsvårdslagen
Detta arbete har undersökt skillnaderna mellan den nuvarande skogsvårdslagen och den föregående. Undersökningen har bestått av två delar, där ena delen är en litteraturstudie av lagarna och den andra är en fältstudie av metoder för att mäta naturhänsynsförändring. Som komplement till fältstudien har en litteraturstudie av undersökningsparametranas naturvårdsnytta. Litteraturstudien av lagarna gick till på följande sätt, inledningen av båda lagarna och hänsynsparagraferna har lästs och jämförts. Fältstudie har gjorts efter metoder som har arbetats fram och sedan testats i fält.
Förslag till illustrationsplan för Gartnerskolen ? Søhus, Odense, Danmark
Is it possible that by planning in a more sustainable way when building a new area, we can improve our environment?Most environmental problems are created in cities and therefore they should hold the solution. Through a more ecological urban planning a better foundation for sustainable housing could be created.This report follows the process in coming up with a proposal for a master plan for an area in Odense, Denmark. By going through principles for sustainable urban planning made by different organizations and persons and from these extract main principles, a background is founded to continue the proposal from.Denmark works a lot on expanding their green areas, maintain the existing ones and recreate what?s being destroyed as cities expand.
Hyggesbränning på Orsa besparingsskog - en studie på tillväxt och föryngring,15år efter etablering
The main purpose with this study was to investigate whether the tree growth differs or not in prescribed burnt areas compared to mechanically scarified. Together with the result from the main purpose, answers of whether it's possible or not to combine nature conservation with tree production in prescribed burnt areas was presented. In these areas the regeneration were analyzed to see if there was enough tree plants to comply with the Swedish Forestry Act regulations terms for approved regeneration. A field survey was conducted at 6 objects, three objects for prescribed burning and three for mechanically scarification. All objects were planted within the same year.
Poppel - en möjlighet i norra Sverige?
The countries in the European Union have agreed to increase their percentage renewable energy sources to 20 %. To reach this goal an increase of biomass production needs to be made. One way of achieving this is by using nonnative species.
Poplar in Sweden produces biomass faster than the domestic trees. In the southern parts of Sweden plantations has been made with good results. In the northern parts survival is a problem that needs to be solved before plantations can be made for commercial use.
Möjligheternas skog : utveckling av Teleborgsskogen som tätortsnära rekreationsskog i samarbete med närboende och aktörer
The Swedish forestry aims primarily maximize production and economical wins. However, especially urban forests have great qualities as space for recreation and children?s play, which means that other goals should lead the forests management. The Teleborg forest is a wooded area in Växjö, surrounded by urban dwellings, schools, nurseries etc. A great part of the forest was wind felled during the storm Gudrun in 2005 which changed the forest, earlier dominated by spruce, dramatically.
Svensk plantskoleproduktion 2003 :
This work consists of two studies. One is based on an inquiery to nurseries with production of woody plants, and the other on visits to gardencenters, primarily in Skåne but also in Stockholm.
Inquieries where sent to 87 nurseries, 48 of them replied. The purpous of the inquiery was to make a thorough investigation of the ligneous production at the Swedish nurseries, what is produced and in what quantities. Within the inquiery was also a thorough look at the fruit tree production. This to be able to conclude what cultivars that are produced and how large part of that production that is certified according to the Swedish Board of Agriculture (SJV).