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1391 Uppsatser om Urban forestry - Sida 22 av 93
Habitat use and ranging behaviour of GPS tracked juvenile golden eagles (Aquila chrysaetos)
Throughout its wide distribution in the northern hemisphere, the golden eagle occurs in a diverse range of environments, e.g., mountainous, forest and open areas. The literature on juvenile golden eagles is limited, and this study provides further knowledge on habitat use and ranging behaviour during the post-fledging period in boreal Sweden. A total of 14 golden eagle juveniles were tagged with GPS transmitters during 2010 and 2011, and nine could be followed during the entire post-fledging period from fledging until migration.
The juveniles fledged at the end of July and beginning of August and initiated migration during October and beginning of November. The length of the post-fledging period, until migration started, ranged from 49 to 97 days. During this period, the juveniles? distance from their natal nest and their GPS height increased with time as their flying abilities developed.
Alternativa skogsbruksmetoder i Norden : ett välbehövligt komplement?
Clearcutting systems have been the dominating silvicultural approach during the last decades in the Nordic countries. While economically rational, it is also leading to a trivialisation of the flora and fauna, and may result in negative reactions of people in urban settings. As a consequence of this, and a more diversified view on which goods and services forests should deliver, there is an increasing interest in broadening the range of silvicultural methods that are used.
The term continuous cover forestry (CCF) represents a suite of methods that have gained increasing interest in the Nordic countries. In CCF a considerable amount of the trees are left after harvest to favour values that require a continuity of tree-covered areas. There are thus hopes that this method will meet the needs for maintaining biodiversity and satisfy social and cultural values.
Mineraliska material som reaktiva filter för avskiljning av tungmetaller från dagvatten
Highly polluted urban storm water from e.g. highways can contain large amounts of heavy metals that may cause harm if they are discharged into recipients. To remove the heavy metals a possible low-cost method that does not require much maintenance, could be the use of reactive filters with filter materials consisting of industrial residues or other cheap mineral based materials. Dissolved metal ions are removed by reactive filters through the processes of ions binding to active sites on the surface of the filter materials, or by formation of insoluble precipitates.The ability of CaO-treated granulated blast-furnace slag, iron oxide coated sand, olivine and nepheline to remove seven heavy metals (Cr, Cd, Cu, Ni, Zn, Pb and Hg) from urban storm water was studied. Initially batch experiments were performed where the effect of pH, dissolved organic carbon (DOC) and dissolved ions on the adsorption efficiency was studied.
Stadsrum och stadsliv - Bebyggelsestrukturers inverkan på kvalitet och innehåll i det offentliga
ABSTRACTToday's modern technological society is constantly evolving and house planning is one area that is constantly creating new technical solutions. By looking back at selected architectural eras during the 1900?s, the idea is to study and analyse three building structures in Gothenburg with a focus on quality and content in the urban space.In order to provide a background for the three selected areas, their history has been studied. The main question for the research is: how do different building structures affect the content and qualities in the urban space?The areas have been selected to represent three typical epochs in Swedish building history.
Hybridlandskap : nya möjligheter för offentliga platser i staden
This project explores how artificial landscapes as parks and squares above ground can save space by using the vertical voids in urban environments and how they can create spatial and social as well as ecological qualities and connections.
Hybrid landscapes are a phenomenon of current interest within the field of architecture and urbanism. Architecture as surface, where facades and roofs become possible to tread, is a relatively recent occurence that has over the past few years become an increasingly common sight in architectural magazines and on international architecture exhibitions. Many of my selected reference projects have often been associated with sensational contemporary design trends generated by advanced computer software. But the phenomenon is also a result of other different currents of change that exist within today?s society, such as densified cities with a lack of open space, which is also expressed in architecture.
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.
Svensk prickskytt i urban miljö : Förändring, utveckling och behov
Dagens konflikter utspelar sig mestadels i helt eller delvis bebyggd miljö och vikten av en uppdaterad och väl fungerande prickskytteförmåga är därför central. Detta till trots, återfinns stora brister i den svenska prickskytteutbildningen vad avser just den urbana miljön. Denna uppsats syftar till att dels bidra med nya infallsvinklar samt ge ett användbart arbetsunderlag för Försvarsmaktens vidare utveckling i ämnet. Genom att komma på det klara med hur prickskyttar utbildas och används i Sverige idag och jämföra detta med utländska modeller och andra länders goda och sämre erfarenheter, vill jag ge förslag på hur den svenska prickskytteutbildningen skulle kunna utvecklas. För att ge uppdaterad information har jag begränsat min efterforskning genom att mina studier av andra länders prickskytteerfarenheter avser det senaste decenniets förehavanden, snarare än utvalda länders specifika tillvägagångssätt.
Ensiling wet brewer's waste in peri-urban areas of Kampala, Uganda
Ett av de vanligaste fodermedlen hos jordbrukare i Kampala är drav, en biprodukt vid ölframställning. Hög efterfrågan, dyr transport samt dålig lagringskapacitet leder till att tillgången på drav begränsas. Ett sätt att lagra drav och således förbättra tillgängligheten är genom ensilering. Denna studie genomfördes som en Minor Field Study, och var en del i ett projekt mellan SLU och Makerere University, ?feed for livestock in urban/peri-urban areas of Kampala?.
Om behovet av ett avrinningsområdesanpassat skogsbruk
The Swedish forest have about 100 000 km of watercourses and it?s an important structure in Swedish landscapes and catchments. In some of the watercourses lives spieces like the freshwater pearl mussel (Margaritifera margaritifera) and brown trout (Salmo trutta) which both are sensitive for inteference from the forestry. The new EU water framework directive has a goal that all surface water will have high or good ecological- and good chemical status at latest by the 22nd December of 2015.
The study has been made in the catchment of Håltjärnsbäcken and it is from a national perspective one of the most valuable streams in Sweden and which also have been included in a LIFE-project. The catchment is situated within the Eco-park of Malingsbo-Kloten and managed by Sveaskog AB.
Persontäthet vid utrymningsberäkningar : Köpcentrums persontätheter
The aim of this study is to evaluate whether the value of occupant load is over or under estimated when the Swedish general value for department stores, 0,5 person/m2, is used for dimensioning shopping centers. The data that was analyzed derives from seven shopping centers and one department store. A conservative method was used to calculate the occupant load factor. The analysis shows that two groups can be discerned: one group that is characterized by a lower occupant load factor that does not exceed 0,3 person/m2, and one group with a higher occupant load factor. Shopping centers with a higher occupant load factor are located centrally in large urban areas.
Effekterna av urbanisering, barksprickedjup och solexponering på lavfloran i sydöstra Sverige
Studies have shown that air pollution, as well as bark fissure depth and sun exposure of a tree can have an effect on lichen growth as well as abundance of lichen species. The aim of this study was to find out the relative importance of these factors. 211 oaks in south eastern Sweden were surveyed for presence of 17 lichen species, as well as the total number of lichen species. Half of the trees were situated in urban areas and half in the countryside. For each tree the bark fissure depth was measured and the sun exposure of the trunk was estimated.
En ficka full av frihet; hur användningen av pocket parks kan verka restorativt på människor i urbana miljöer
Ett livslångt intresse för psykologi och landskapsarkitektur ledde in på spåret att
diskutera vad två av dagens stora frågor inom ämnet kunde erbjuda om de slogs
samman; positiv psykologi (?Positive Psychology?) och hållbar stadsutveckling. Alla
människor utsätts emellanåt för stress, vilken vi är konstruerade att kunna hantera.
Trots det är en av de största orsakerna till sjukskrivning i vår tid just stress- och
relaterade sjukdomar. En välkänd källa till restoration eller återhämtning är grönska
och natur. Så frågan i denna uppsats rör huruvida små grönområden i den täta
staden kan verka restorativt på människorna som besöker dem.
Social hållbarhet och förtätning : en kritisk studie i förtätningens sociala paradoxer
Densification is one of the urban visions for sustainable development - a vision that has become a part of the solution to the unsustainable sake dilemma. With the dense city land will be saved, energy consumption reduced and social cohesion improved. The dense city is considered to be ecologically, economically and socially sustainable. Applying an urban design concept has thus proven to be problematic. Density has been found to be a complex concept
which is far more complicated than measuring how much built surface that needs to be covered.
It is also not disputed what different degrees of densification mean and whether densification in itself is sustainable.
Enkätundersökning till Älvdalens Besparingsskogs delägare
Älvdalens Savings Forest was formed in the late 1800's. During this time the country was conducting the first major land reform in Sweden, namely the redistribution of arable land through government action. In Älvdalen people saw an opportunity to form Savings Forest, that is jointly owned forests, where everyone would get part of the proceeds. The yield in the first place would cover were costs to manage and monitor the forest and to the measures to ensure regrowth and improve the forests. You could also use the proceeds to develop the area and make it easier for the population to manage their forest.
In early summer, a survey was sent to all the members of Älvdalens Savings Forest.
Holmbergska tomten i Lund : en fallstudie utifrån begreppet ?Urban Wilderness?
I mitt examensarbete till landskapsarkitekt har jag valt att göra en fallstudie utifrån begreppet Urban Wilderness. Som studieobjekt har jag valt en plats i Lund som kallas Holmbergska tomten.
Holmbergska tomten är en ca 1,5 hektar stor ödetomt. Platsen har en historia som sommarnöje och trädgårdsmästeri. Sedan början av 70-talet, då staden köpte tomten, har vegetationen på platsen fått utvecklats fritt utan skötselåtgärder - förutom att man tagit ned sjuka och döda almar det senaste årtiondet. Det har lett till att platsen fått en vild karaktär, med gamla stora träd, sly,
snåriga buskar och ett mycket vackert fältskikt med överdådig vårblomning.