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530 Uppsatser om Competing vegetation - Sida 25 av 36

Comparison of bird communities in stands of introduced lodgepole pine and native Scots pine in Sweden

The introduced lodgepole pine (Pinus contorta) occupies more than 650 000 hectares in Sweden. There are some differences between lodgepole pine and Scots pine (Pinus sylvestris) forests which could affect bird assemblages, for example differences in canopy density and ground vegetation. Birds were surveyed in 14 localities in northern Sweden, each characterized by one middle-aged stand of lodgepole pine next to a stand of Scots pine. The two paired stands in each locality were planted by the forestry company SCA at the same time and in similar environment to evaluate the potential of lodgepole pine in Sweden. In those 14 localities, one to three point count stations were established in both the lodgepole pine and the Scots pine stand, depending on the size of the area.

Dynamiken mellan sändare och mottagare- en studie av Acne Jeans, Filippa K och konsumenten i Stockholm och Göteborg

The consumer today is affected by a considerably larger number of world surrounding factors than she used to be, borders between different cultures and other consumer differences are being erased to a growing extent. The consumer can easily get its inspiration from many different directions which become clear in the common life. We eat sushi for lunch, we?re driving German cars and we?re having dinner with international business partners. The community also exposes the consumer for a more intense noise from offers, impact and marketing.

"Ibland vet man inte hur de tänkt?" : En kvalitativ studie om betydelsen av det fasta materialet i förskolors utemiljö.

I undersökningen har en kvalitativ studie använts bestående av postenkäter. Syftet med studien är att undersöka tre förskolors utemiljöers fasta material. De valda förskolornas utemiljöer är byggda under tre olika årtionden. Förskolegårdarna har studerats av oss genom observationer, foto och postenkäter till pedagogerna. I postenkäten har pedagogerna fått besvara hur de upplever den egna förskolegårdens fasta material.

Tillämpning av prissäkring i spannmålsodlingen : en jämförelse mellan svenska lantbrukare

The grain market is facing substantial changes. Tradionally, cereal has been a supply-led market i.e. supply conditions have had a major impact on price level or indirectly, through market interventions implemented through the Common Agriculture Policy (CAP). Just a few years ago, Sweden and the EU were not affected so strongly by world market prices for cereals. EU was a surplus-area and to a substantial degree a local market.

Förstudie till våtmark i Rimbo : Design för optimal hydrologi och kväverening

The euthropthication of the Baltic Sea is a threat that is beginning to be taken seriously by the governments concerned. In Sweden, regulations concerning the allowed nitrogen (N) concentration in the effluent water from wastewater treatment plants are being tightened up. The Rimbo wastewater treatment plant has been imposed to reduce the annual mean concentration of total N in the effluent water to levels below 15 mg l-1. A more and more common way to reduce the nitrogen level in wastewater is to let the water pass through a wetland. This study investigates the possibility to build this kind of wetland at the outlet of the Rimbo wastewater treatment plant.A prestudy of the topography, soil characteristics and groundwater flow indicates that the land area in question is well suited for the construction of a wetland.

Klimatpåverkan vid ändrad markanvändning på Årstafältet - effekter på energibalansen i lokal skala :  

Markanvändningen påverkar förutsättningarna för en ytas energibalans och därmed lokalklimatet. Med kunskap om olika ytors klimatpåverkan kan åtgärder vidtas redan i stadsplaneringen, dock saknas tillgängliga verktyg anpassade till stadsplanerare. Den här studien syftar till: (1) att genom en lämplig fallstudie, skapa en grund för ett verktyg som uppskattar klimatpåverkan vid transformering av naturmark till urban mark, (2) att undersöka klimatpåverkan för den planerade markanvändningsförändringen i fallstudien och (3) att undersöka takvegetationens effekt på den planerade markanvändnings-förändringen i fallstudien.Första steget i metoden var att definiera systemgränserna och avgränsa omfattningen av rapporten. Årstafältet (Stockholm) valdes som fallstudieområde där det planeras en markanvändningsförändring från naturmark till urban mark. Rapportens innehåll avgränsas till: (1) den klimatpåverkan som har direkt koppling till ytans förändrade egenskaper p.g.a.

5 minuter till Luleå : en visuell studie av en stadsinfart

SUMMARYThe demands on the public environment are big and in particular on the environment of communication which we spend a lot of time in on our way to work, school etc. The city-approach is a road section that leads from the periphery of the city to the centre of the city, often through boring and meaningless industrial areas that displays the back side of the city to the voyager on the city-approach. The intentions of this thesis in landscape architecture has been to study one of the two city-approaches to the city of Luleå, the close surroundings and contextual position in the city and not at least give suggestions of ways how the city-approach can be changed, clarified and improved. The study of the city-approach has been made by studying literature that concern city-approaches and the architecture of roads in general. Studies of different analysis methods has been made to find appropriate approaches to work with the specific study of the city-approach to Luleå.

Restoring biodiversity in degraded secondary rain forest in Sabah, Malaysia : natural regeneration of trees after restoration treatments

Many tropical rain forests has been lost or degraded as a result of human activities and environmental factors. Since the level of biodiversity is high in the tropics, maintaining these areas is of great importance. Forests like these are often assumed to benefit from forest restoration and rehabilitation. The INIKEA project area in Eastern Sabah, Malaysian Borneo, aims to improve biodiversity and/or species richness in the degraded forest through enrichment planting with indigenous species. The objective of this thesis was to evaluate how different treatments (liberation, gap-cluster planting and line planting) affect the biodiversity of natural regeneration in different forest types in the Rain forest Restoration Experiment, located in the INIKEA project area.

Tjäderns (Tetrao urogallus L.) vinterdiet i norra Sverige : är gran (Picea abies) viktig i vissa habitat?

In Scandinavia, capercaillie are often associated with pine trees (Pinus sylvestris) in winter, with pine needles as the main diet. Few dietary studies have been conducted in Sweden and winter diet is subject to little debate. The interesting thing is that this "pine specialist? is also found in spruce (Picea abies) forest habitats where pine is scarce or unavailable. In many studies outside Sweden (primarily Central Europe) spruce is regularly observed in the winter diet, but I have found no reports on the selection of the diet in spruce forest areas in Sweden.

Med leken i fokus : ett gestaltningsförslag för Vittra förskolegård i Vallentuna

Syftet med denna uppsats är att visa hur en förskolegård kan gestaltas med utgångspunkt i barns lek. Med vårt arbete vill vi belysa att den fysiska miljön påverkar hur bra leken utvecklas på förskolegården och därmed påverkar barnets olika upplevelser och erfarenheter under utomhusvistelsen. Förslaget utgår från barnets lek som en viktig komponent för utveckling och hälsa. Därmed är även pedagogik och motorik viktiga förutsättningar på förskolans gård. Till grund för gestaltningen ligger en litteratursökning samt en brukardialog som genomförts med barn, förskolelärare och föräldrar. På så sätt utvecklade vi en förståelse för platsen och dess användning som kunde vävas ihop med den teoretiska kunskapen om barns lek i utemiljön. Under arbetet tar vi fasta på att storleken på förskolegården är viktig för barns lek samt att leken flyter bättre i miljöer med naturkaraktär.

Cirkulationsplatser ur ett trafiksäkerhetsperspektiv

Cirkulationsplatser projekteras oftast in i högtrafikerade miljöer, vilket gör att alla olika delar måste samordnas så att de klarar av de höga flödet, men också skapar en plats som är lättförståelig och lättnavigerad. Det är inte bara de tekniska delarna, såsom refuger och körfältsbredd som måste tas med i beräkningarna, utan vegetation har också en del i att skapa en plats som är vacker, men även är säker för trafikanterna som nyttjar platsen. Det är också viktigt att skapa, i så stor utsträckning som möjligt, en skötselextensiv cirkulationsplats, eftersom det är en utsatt miljö för skötselpersonal att arbeta i. Ändamålet med detta examensarbete har varit att utforska cirkulationsplatsen ur ett trafiksäkerhetsperspektiv. För att få ingående kunskap om hur cirkulationsplatser utformas har en litteraturstudie utförts. I denna har allt från cirkulationsplatsen utveckling genom åren, till hur olika delar av cirkulationsplatsen utformas för att skapa en trafiksäker miljö gåtts igenom. Frågeställningar som har använts och besvarats under detta examensarbete är följande: - Vilka delar består cirkulationsplatsen av? - Hur utformar man en säker cirkulationsplats? - Hur kan man garantera de oskyddade trafikanternas säkerhet? För att kunna skriva ett än mer givande och intressant arbete, genomfördes även en fallstudie.

Food preference in African Elephants (Loxodonta Africana) and the impact of Bomas in the vicinity of and in Masai Mara National Reserve

In the Maasai Mara National Reserve the native people, the Maasai, have lived for a long time following their own traditions. Their traditional lifestyle is that of a nomadic people, leading their cattle to the best grazing. Sharing their land with a large variation of different animals, one of them being the African Elephant (Loxodonta africana), the Maasi people have since long adapted to a life side by side with these giants, as well as the fierce predators living in the area.The aim of this study is to determine whether the Maasai settlement, known as Boma, has any impact on the elephants in the surrounding area. In order to conclude whether the bomas has an impact or not, observations of the wildlife were carried out. Observations were conducted in two different seasons, in December 2003 and May/June in 2004.

Att växa i lekmiljöer : hållbar och funktionell växtanvändning i lekmiljöer för förskolebarn

The preschool constitutes a big part of many children's everyday existence. Its contents are therefore of great importance and the environment deserves a well thoughtout design. In this study, surveys in field and literature have resulted in conclusions around how plants can be used in children's play environments, in order to contribute to the experiencerelated values. The aim is to present conclusions to lean on when drawing up designproposals for new playgrounds, especially where the natural conditions are not so favorable. The first question that is responded to is how plants can be used in order to enrich the children's play environments.

Driftkostnadsanalys i väginvesteringsprojekt

During its lifetime, a road goes through a number of different stages; pre-study,inquiry of the road, work plan, documenting stage, building stage and operatingstage. The operating stage is the one that takes the longest time and costs themost. Those have a tendency of becoming unnecessarily high because the projectengineers don?t always take the management and maintenance prerequisites intoconditions.To decrease the management and maintenance costs, the Swedish RoadAdministration SouthEast has been in need of a work procedure that makes theroaddesign engineers take the management and maintenance of the road intoconsideration. This shall be achieved by a checklist where the most commondesigns that lead to increased management- and maintenance costs are compiledand listed.Through interviews with project leaders in management, the most commonproblems have been identified, analyzed and summarized under the headlineswinter-road, vegetation, road equipment and road designs.To elucidate the problem from several points of view, interviews wereimplemented with project leaders in investment and roaddesign engineers.

Skiktning och strukturell utveckling i unga naturlika skogsplanteringar: :

Multilayered woodland types are an important part of the urban forest. The knowledge how to establish and maintain such plantations are not as deep as other knowledge fields concerning forestry. Therefore this study has looked upon how to achieve multilayered structures in young nature-like woodland plantations. As a theoretical base for the study three different major knowledge culture have been studied that concerns the subject, ecology, forestry and landscape management/design. This three theoretical framework concludes that many natural processes strive in the opposite direction of multilayered structures in their youth.

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