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1518 Uppsatser om Urban soil - Sida 5 av 102

Autumn water sources for understory vegetation and fungi in a boreal forest : an evaluation using stable isotopes

Understory vegetation and fungi are regarded as important ecological drivers of processes like productivity and nutrient cycling in boreal forests. Whilst those processes are linked to soil water content, relatively little is known about the sources of soil water for these forest components. During early autumn in boreal forests, temperature falls and large events of rain are frequent which may influence soil water availability. To better understand the autumn plant-soil-fungi water relationships in this ecosystem, I used stable isotopes techniques in this study to examine the water sources for ericaceous shrubs and fungi in a Scots pine forest following a large, early autumn rain event. I hypothesize that ericaceous shrubs of two functional groups (evergreen vs.

Kväveomsättning i gräsmark med olika artantal och artsammansättningar :

This study was carried out at the Swedish University of Agricultural Sciences, Dept. of Agricultural Research for Northern Sweden. The aim of the study was to determine how plant species richness and diversity influence the nitrogen pools and nitrogen fluxes in the soil. Plant and soil samples from a biodiversity experiment in grasslands were used. Thirty plots with 12 grassland plant species (legumes, grasses, and non-legume herbs), combined from 1-12 species were investigated.

Uteservering för Hotell & Restaurang Villa Anna : urban odling i uteserveringsmiljö med storytelling som gestaltningsverktyg

In this paper, I design a new concept for a patio at Hotel and Restaurant Villa Anna in Odinslund, Uppsala, Sweden. Through this design, I examine how urban farming can thrive in a restaurant-context. The purpose of the design is to give the visitor a sense of the core values of the cuisine and to strengthen the sense of place by storytelling. My methods are comprised of a literature study on urban farming and storytelling as well as a discussion with the res-taurateur Rafael Löfstedt. I create a story of the place by examining its historical background and connect it to the current philosophy of the Villa Anna restaurant.

Effekter av urbanisering på grönalgen trädgröna i Linköpings stad med omnejd. : Biologiundervisning i närmiljön

Urbanization has for a long time been a threat to our biodiversity. Epiphytic organisms such as lichens have been negative affected by traffic pollution and the new urban environment surrounding their old habitat (van Her 2001). Another epiphytic organism is the green algae Desmococcus olivaceus. Unlike lichens the green algae is favoured by polluted areas. The aim of this study was to investigate if time in urban environments affected the cover of the green algae on old oaks.

Soil carbon in small-holder plantain farms, Uganda : a comparison between agroforestry and non-agroforestry

Smallholder farmers in Uganda suffer from declining productivity. With a rapidly increasing population, marginal land is taken into production and the current land management leads to loss in soil fertility and escalation in soil erosion. There are studies indicating that the use of agroforestry increases soil organic carbon (SOC) compared to systems without trees. Soils which are high in carbon have many advantages, for example better water holding capacity, which can reduce stress on crops during drought. The aim of this study was to determine the effect agroforestry has on SOC concentration in small-holder farming systems in Uganda. The intended system to study was farms practicing agroforestry methods or not in intercropped plantain (cooking banana) fields.

Rekonstruktion av jordartsförhållanden i Ingarvet, Falun, från geotekniska rapporter

The Falun area has been undergoing mining activity for a very long time and miningslag piled up and was used as foundations for building houses and roads, Ingarvetstarted expanding in the 1970s to an industrial area. The main goal for this report is toreconstruct a soil map of how the landscape was before anthropogenic effects. With thehelp of ArcGIS and geotechnical reports a soil map for parts of Ingarvet, Falun werecreated..

INDUSTRIELLT EKOLOGISK STADSODLING : EN KVALITATIV STUDIE SOM UNDERLAG FÖR EN STADSODLINGSREVOLUTION I  STOCKHOLM

Rooted in Industrial Ecology (IE) theory, this report evaluates how urban agricultural concepts and techniques, can contribute to improved ecological sustainability within the inner city boundaries of Stockholm. An overarching literary study as well as an interview was carried out, resulting in a qualitative analysis followed by suggestions for practical implementations. A substantial convergence was found between the eco-restructuring objectives of IE and the principal motives for urban agriculture. Consequently, eco-restructuring objectives are found in varying degrees in the presented urban agricultural techniques. Industrial symbioses, permaculture and combinations of urban agricultural techniques are tools which are capable of corresponding adequately to the diversity of urban settings.

Ska det framtida Göteborg växa och gro?: En diskursanalys gällande beslutsfattares syn på urbant jordbruk

An increasing global population and a worldwide growing urbanization has raised the questionabout the future food security in cities all over the world. Peak-oil limits the access to cheap fossilfuels which threatens the global food-supply chain. This has resulted in a larger awareness anddiscussion related to urban agriculture. Growing crops and keeping animals within the city-borderscould be one way of creating a more robust and sustainable food supply for city dwellers. However,to enable an expansion of the urban agriculture many theorists argue that policies and institutionalstructures that supports and promotes city farming have to be developed.

Dimensionering av betongplatta på lös undergrund. En jämförelse mellan tre beräkningsprogram

Today more effective computer programs are in use, regarding design of geotechnicalconstructions. There is a risk that the theoretical background of the computerprograms, its limitations and the signification of the choice of soil parameter isforgotten when the computer programs become more user-friendly.This Master thesis deals with simulation and analysis regarding three computerprograms, FEM-design, with the addition Raft, Plaxis and BE-slab. Comparisons aremade for settlement and maximum moment in a concrete-plate. FEM-design is a threedimensional FEM-program, foremost created for design engineers. Plaxis is a twodimensional FEM-program, intended for geotechnical engineers while BE-Slab is aBoundary elements program in two dimensions that is mainly used by designengineers.

Källor i Lagga, en uppländsk slättbygd : Geografisk och geologisk påverkan påkällvattens egenskaper

For centuries, springs have played a significant role in our society as water supplies, reasons for where to settle down, and in folklore. There are different reasons why and where a spring forms, e.g. in what kind of soil it has its outflow. Geographic and geochemical surroundings have an influence on spring-water quality.For this project some of the springs in the Lagga perish, Knivsta municipality, Sweden, were selected for a closer study. Water samples were collected from springs for analysis.

Kan Urban Computing influera Sport-IT? : En studie om nästa generations coachingverktyg

The Swedish government?s objective regarding information technology is to be world-leading in using the possibilities that digitization provides. In some aspects this has already been done, but in some areas much is yet to be accomplished. Although sports and recreational fitness activities are amongst the fastest growing areas of personal and consumer-oriented cloud computing-based technologies around the globe, there are areas within the genre that?s not evolving as quickly.

Fåglar i urbana miljöer : kvaliteten på urbana habitat och om beståndstäthet är ett bra mått på habitatkvalitet

The urbanization of the world is increasing. How it affects bird populations have been well studied during the last decade, and comparisons between urban and non-urban habitats have been carried out. A common method for measuring habitat quality is to calculate the population density. This method is easy to use, but have been criticized during the last couple of years. In this study, data of population densities was compared with data on reproduction success.

Industriellt byggande – en nulägesrapport

Today more effective computer programs are in use, regarding design of geotechnicalconstructions. There is a risk that the theoretical background of the computerprograms, its limitations and the signification of the choice of soil parameter isforgotten when the computer programs become more user-friendly.This Master thesis deals with simulation and analysis regarding three computerprograms, FEM-design, with the addition Raft, Plaxis and BE-slab. Comparisons aremade for settlement and maximum moment in a concrete-plate. FEM-design is a threedimensional FEM-program, foremost created for design engineers. Plaxis is a twodimensional FEM-program, intended for geotechnical engineers while BE-Slab is aBoundary elements program in two dimensions that is mainly used by designengineers.

Produktivitet vid stubbskörd :

Stump harvest could be found in the late 1970?s and the early 1980?s. And now when the prices on energy are high it has become an interesting topic again. This work has been conducted within Holmen Skog?s stump harvest testing in Norrköping.

Hållbar stadsutglesning. Om människors inköpsresor och färdmedelsval före och efter etableringen av Allum köpcentra

External shopping malls in the context of urban sprawl have, according too much of the previous research, had a negative connotation when it comes to urban planning and a sustainable society. In recent years, some of this research on the issue has changed course towards that it might be some positive opportunities and elements in this development, given that it follows certain patterns. This latter development is what we have chosen to look deeper into in our study, Sustainable urban sprawl.The shopping mall Allum in Partille center has been the subject of this case study, to explore how people's shopping habits and travels in connection with these purchases has been affected by the establishment of an external shopping mall from a sustainability perspective.The method we used was a questionnaire distributed at workplaces in Partille. The collected data were then analyzed by using some of the dominant urban planning theories, for thus underpin our analysis. We have supplemented the study with a collection of information on existing and planned shopping centers in Gothenburg region.Our study shows that external shopping centers located in already developed areas, with an existing social structure, can help to create a more compact city with fewer and shorter shopping trips, and more sustainable transport choices when purchasing goods and services..

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