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1418 Uppsatser om Forest landscape - Sida 45 av 95
Att nyttja marken 30 meter från järnvägen : hur platser, syften och miljö vävs samman
The purpose of this work is to raise ideas and interest for land that is very much forgotten,unused and neglected in terms of maintenance and usability. Railroads are often seen as adirty and loud intrusion in the landscape and therefore cities turn their backs on them. Theland around railroads is not considered useful despite its often central location and scrublandis common in these areas.The starting point of this work is the restrictions and possibilities linked to the land withinthe security distance 30 meters from the railroad center. Within this security distance thereare numerous limitations and regulations due to the nature of railroad use. These limitationsare counted for in the initial chapter and lay the foundation for the rest of the work.
Light pollution : consequences and sustainable lighting design
Light has always fascinated humans but ever since the invention of the first light
bulb, the use of artificial lighting has accelerated dramatically. Darkness has never
been as rare as today and the overuse of lighting has created a new phenomenon
called light pollution. Most living beings are biologically dependent on the
recurrent twenty-four-hour rhythm of light and darkness, called the circadian
cycle. Human beings are evolutionary developed after this circadian rhythm and
the effects of constant artificial light is yet unknown. Scientists fear the consequences
of constant lighting and what it means physically, mentally and philosophically
for the human species.
Skogsentreprenadföretagens lönsamhet :
During some time there has been a debate whether or not logging contractors? profitability can be considered poor. The contractors? situation is important for maintaining long term relationships and continuity in the forest industry. A thorough analytic picture is however missing.
Generationsskiften i familjejordbruk : genomförande och familjerelationer
Within the next five years about 15 % of the Swedish forest owners that will undergo a succession of ownership. Presently the most common way to acquire a forest estate in Sweden is to acquire it within the family. To decide to let go after a whole life as a forest owner and manager of your own land is for many people a hard decision to make and often requires a long process. The complex process that a succession of ownership often is includes both questions about economy, legal aspects and regulations, taxes and questions of more personal nature, often called soft issues. These personal aspects or soft issues are important and can if handled poorly or not at all negatively affect relationships in the family for a very long time.
Död ved i gallrad skog och nyckelbiotoper : en jämförelse av habitatkvaliteter för vedlevande lavar och mossor
A high amount of dead wood is one of the most important prerequisites for high biodiversity on forest land in Sweden. Dead wood is most abundant in young forests, thinned forests, woodland key habitats and protected forest land. In old-growth forests most of the dead wood consists of logs and snags, whilst in managed forests a huge proportion of dead wood is made up of logging residues like stumps and FWD, fine woody debris (< 10 cm diameter). All these different types of dead wood may serve as substrates for epixylic bryophytes and lichens. However, few studies have been conducted on the relative importance of these different fractions of dead wood for the occurrence of bryophytes and lichens, especially when considering dead wood on thinned forest land.
Minskad utbredning av apollofjäril, Parnassius apollo, i södra Stockholms län : En studie av möjliga faktorer utifrån artens habitatkrav
The Apollo butterfly, Parnassius apollo, is categorized as Near Threatened (NT) in IUCN Red List. Today in Sweden it is found only in strongly fragmentized populations. In the county of Stockholm, P. apollo exists exclusively in some islands of the archipelago and with one mainland population in Stora Vika. This study has the purpose of expanding the knowledge of the local conditions for the butterfly in the south parts of the county of Stockholm and thereby contributes to a sustainable land management that can preserve the Apollo butterfly.A comparative study was done between areas where the butterfly today have: a stable population (Stora Vika, Utö and Ålö), has disappeared (Muskö and Yxlö) or is strongly declining (north part of Ornö).
Den skogliga informationens roll i ett kundanpassat virkesflöde : en bakgrundsstudie samt simulering av inventeringsmetoders inverkan på noggrannhet i leveransprognoser till sågverk
This MSc thesis is divided into two parts. The first part deals with the need for information
from forest campartments selected for clear cutting, in connection with planning in an
integrated forest- and sawmill enterprise. A review of literature is followed by a case stud y,
where present conditions in a Swedish forest company are compared with current research in
the area. The seeond part consists of a simulation stud y, which aims at camparing the
accuracy of inventory estimates using different methods. The estimates are delivery forecasts,
covering one month consumptian of timber in a large sawmill.
Kan markfuktighetskartor användas för att hitta skogsmark med hög bonitet? : ett gis-baserat försök med dtw-index och laserskannad övre höjd
The depth-to-water-index (DTW-index) is derived from digital elevation models (DEM) to map soil wetness, in terms of distance from soil surface to the ground water table. The aim of this GIS based study was to investigate the existence of a relationship between DTW-index and forest site productivity (SP). The belief of such an assumed relationship was based on knowledge that the ground water level is related to site properties that can either promote or impede tree growth.
Data primarily comprised rasters of the Krycklan catchment in northern Sweden and depicted DTW-index and a laser scanned vegetation height. The 100th height percentile of each pixel in the vegetation raster was assumed to mirror the top-height, letting it act as a relative measure of SP within a delineated area of equal stand age.
"Hela inlandet ligger ju i medieskugga" : Vilhelminabors upplevelser av lokaljournalistik
In the light of the problems the media industry are struggling with, local news reporting is only one of the challenges the news organizations are facing. When local editors is being moved to the cities the tie with the local community is being severed.The aim of this study has been to analyze how the inhabitants of Vilhelmina municipality talks about their experiences of local journalism. With methodological inspiration from the Critical discourse analysis (CDA) this study examined the discourses of local journalism, social media, journalism's role and municipal policy. The theorectical framework consisted theories of media and democracy, convergence culture and discourse theory.The survey was conducted with four focus groups interviews. The focus groups were divided in different cathegories based on the participants experiences, ages and employment.
Däck-mark Interaktion hos skogsmaskiner
The most predominant method for forest harvesting in Sweden is the cut-to-length method based on two-machines, a harvester that fells trees and cut them in a predefined length, and a forwarder which transports logs to a landing area for further transport to a processing facility. New machine solutions have to be much gentler to the ground than today?s machines. To be able to develop a forestry machine that preserves the terrain requires a proper understanding of the interaction between tire and soil.The goal of the project is to contribute to the existing knowledge of forest machine tire-soil interaction and to develop a tire-soil model that enables dynamic simulations of forest machines operating in rough terrain. The modeling has especially been focused on the interaction between tires and soft ground.A comparison of theoretical data of different WES-based terrain interaction models and a comparison test data from a full scale field test is presented.
Att veta Gudarnas hemlighet : En sårbarhetsanalys av omständigheterna kring stormen Gudrun med pressure and release modellen
The concept of vulnerability is the capacity or the sensitivity to become damaged. Vulnerability are characterized by one or more of the following terms; a system´s sensitivity to exposure to shock, stress or interference, the state of the system in relations to a threshold of damages, and the system´s ability to adapt to the changing circumstances. Vulnerability in this study is referring to the sensitivity of the circumstances that lead to sustainable livelihood that can´t be maintain and that there is an inability to cope with and manage stress. The choice of making a study in this area is based on that action needs to be taken to moderate the vulnerable aspects of society, in this respect in relations to storms. Analyzes of the social vulnerability to climate change or natural events is needed for effective actions.
Vad orsakar skador på kvarstående träd vid mekaniserad gallring - en intervjustudie
This thesis includes a review of scientific studies of tree injuries following mechanized thinning. Interviews have been made with drivers of single grip harvesters and forwarders in forest thinning and a number of essential factors have been identified as the most important to take into account in order to minimize and/orprevent injuries to stems and roots of remaining trees..
Advantages and disadvantages of different observation methods on a troop of wild olive baboons at a river in Southern Kenya
Every observation method has its advantages and disadvantages and a well-adopted method gives more reliable results. Factors affecting the choice of the most appropriate methods for recording foraging behaviours include species, group size, environment, seasons and age. The focus for this study was to determine which method is most appropriate for studying the foraging behaviour of a troop of 89 olive baboons (Papio anubis) living in a riverine forest by the Southern Ewaso Ng'iro River by Lale'enok Resource Centre in Kenya. To determine this, a literature study was carried out to compare methods from monkeys and apes. I found instantaneous sampling was the most common method with intervals of 5 minutes in most cited studies.
Systemtänkande, ekosystemtjänster & produktionslandskap : en fallstudie i Elleholm, Karlshamns kommun
I arbetet undersöks hur kunskap om systemtänkande och
ekosystemtjänster kan användas vid utformning av ett
produktionslandskap ansluten till fjärrvärme i området Elleholm i Karlshamns kommun. Anledningen till arbetets fokus är slutsatser om utbyggnad av resurshushållande växthussystem i Elleholm som drogs under masterkursen Energy Landscapes, våren 2014. Målet med examensarbetet har varit att bidra med djupare analys av växthusutbyggnad utifrån teori och att med en landskapsarkitektonisk
vinkling rekommendera placering och utformning av utbyggnad inom ett avgränsat projektområde.
Systemtänkande och ekosystemtjänster undersöktes först teoretiskt i en litteraturstudie och applicerades sedan praktiskt i en fallstudie. Litteraturstudien visar att systemtänkande baseras i en vetenskaplig teori, systemteori, som influerat flertalet discipliner och även
påverkat teori inom landskapsarkitektur. Landskapet kan ses som ett komplext och öppet system med flera subsystem och systemnivåer.
Begreppet ekosystemtjänster (ekosystemens direkta och indirekta bidrag till människors välbefinnande) har i sin tur uppkommit för att försöka påverka och styra samhällsplanering mot beslut som möjliggör ekosystem att fortsätta ?ge? människan ekosystemtjänster.
Ekosystemtjänster kan ses som komponenter i ett landskapssystem.
I fallstudien applicerades teori kring landskapssystemets nivåer och ekosystemtjänster för att få kunskap om system inom projektområdet i Elleholm.
Att förhålla sig till den nära historien - och planera för den avlägsna framtiden :
This thesis concerns the term contemporary history and its role in landscape architecture. Today?s contemporary history is defined as the planning and architecture connected to the 60s and 70s, in Sweden carried out as a large scale planning project called ?Miljonprogrammet?, which set out to build one million new residences in ten years.
Initially, the term contemporary history and its complex of problem are examined.
To deepen the picture of today?s situation, a historical review has been made, starting in early 1900s ending in 2000s concerning how different planning and architectural influences has varied through the years.