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455 Uppsatser om Basiphilous pine forests - Sida 24 av 31

Factors affecting bark-stripping by red deer (Cervus elaphus) : the importance of landscape structure and forage availability

Bark-stripping by red deer (Cervus elaphus) cause extensive damage to economically valuable spruce trees (Picea abies) in Swedish forests. The underlying causes for bark-stripping are not fully understood, and the frequency and severity of damage unpredictably differ between regions. In this study, I investigated if landscape structure (e.g. agricultural dominated landscape opposed to forest dominated landscape), forage availability, population density and disturbance (e.g. roads and settlements) affect bark-stripping frequency.

Algbiomassa som gödselmedel till gran och tall

För att växter ska växa bra krävs det en mix av olika näringsämnen där de två viktigaste näringsämnena normalt sett är kväve (N) och fosfor (P). Det är viktigt att mixen av olika näringsämnen passar växtens behov samt att näringsämnena är möjliga för växten att ta upp. Det får inte heller vara för mycket av ett näringsämne då detta kan leda till förgiftning. Denna studie är gjord med syfte att klargöra hur algbiomassa av grönalger i blandad mix fungerar som gödslingsmedel för små plantor av tall (Pinus sylvestris) och gran (Picea abies). Samt att hitta förklaringar över varför algerna påverkar plantornas tillväxt.

Nitrogen fixation among boreal feather mosses along a clear-cut chronosequence

The Swedish boreal forests are limited by nitrogen (N) availability. While biological N2 fixation by cyanobacteria hosted by pleurocarpous feather mosses are important sources of N input to natural boreal forest ecosystems, little is known about the patterns of N2 fixation in silvicultural systems. This study investigates the biological N2 fixation rates of two boreal feather moss species (Pleurozium schreberi and Hylocomium splendens) along a chronosequence from clear-cut to mature forest, as well as the vegetation characteristics along the chronosequence. Measurements and samples were collected from 32 forest sites that were classified into four age classes (clear-cut, pre-commercially thinned, thinned and mature forest). The sites were located near the city of Arvidsjaur in northern Sweden.

Ett gammalt kulturlandskap i Vindelfjällen : skogshistoria och markutnyttjande i Vuornavagge under 300 år

Humans have inhabited mountainous areas in northern Sweden since the end of the last glacial period, ca 8000 B.P., and their presence has marked the landscape in various ways. Older traces include the remains of hearths and dwelling sites, but there are also remains, such as culturally modified trees (CMT's), resulting from more recent activities in forested areas. This study aimed to document how people, both indigenous Sami's and Swedish settlers, have used an area northwest of Ammarnäs in Västerbotten, during the last 300 years, and what traces their activities have left in the area. I used historical records as well as an inventory of CMT's in the area to address this aim. Historical records of Sami activity are meagre, but it is clear that the people of the Ran and Gran Sami villages utilized the area long before 1500 A.D.

137Cesium i myrsamhällen i Gävleborgs län 24 årefter Tjernobylolyckan

24 years have passed since the Chernobyl accident when radionuclides were spread over largeareas of Europe, including the Scandinavian countries. Today, measurable activities of 137Csare still observed in many Swedish ecosystems.Ants (belonging to the order Hymenoptera) are social insects which collect organic materialfrom a large area around their nests. This study focuses on the 137Cs activity in ant nests andthe cesium accumulation in these nests. The aims were (1) to estimate the 137Cs fall-out in1986, (2) estimate the radiation exposure of ants and (3) find how 137Cs is distributed in an anthill. Seven ant hills (occupied by the species Formica polyctena) were studied near the villageof Hille, situated north of the city of Gävle in central Sweden.

Virkesproduktionen under 80 år i ett fältförsök i Dalarna med olika skogsskötselsystem

I Sverige är trakthyggesbruk med kalhuggning det dominerande skötselsystemetmen intresset för kalhyggesfritt skogsbruk har ökat de senaste åren. Alternativentill kalavverkning är omdiskuterade och kritiseras ofta för att inte vara lönsamma.Målet med detta examensarbete är att analysera ett långtidsförsök med olikaskogsskötselsystem och att diskutera eventuella produktionsskillnader. De fem skötselåtgärdersom undersöktes var 1) kalavverkning med plantering av gran och tall,2) naturlig föryngring under fröträd, 3) blädningsbruk, 4) dimensionsavverkningoch 5) orörd skog (referensyta). Fältförsöket ligger på Siljansfors försökspark iDalarna och anlades 1923. Alla försöksytor har en areal av 1 ha.

Förskolors inställning till och användning avstadens natur :

This master thesis is made in co-operation with the Department of Forest Management and Products at the Swedish University of Agriculture in Uppsala and the Forestry Association in Stockholm. The purpose of the Master thesis was to describe how pre-schools in Sweden use forests and green areas, and to understand how different factors can affect the use of the nature. The purpose of the interviews was to create a picture of attitudes and routines of the pre-schools, in the matter of visiting the nature. The thesis is built on interviews where fifteen pre-schools in five large cities around Sweden participated. Among these pre-schools, five of them worked with special focus on nature, while the other ten did not have any particular focus connected to their activity.

Development of green space in Dar es Salaam, Tanzania

In Dar es Salaam, as in many cities in developing countries, green areas are decreasing due to the fact that the growth of buildings, infrastructure and services has become a priority. As the population increases more buildings and infrastructure are needed and much of the building activity takes the form of uncontrolled settlements, which encroaches the public green space. Dar es Salaam has approximately three million inhabitants, of which about 70 percent are living in informal settlements. The aim with this study is to make a design proposal for a park and recreation area where the Msimbazi river basin in the centre of Dar es Salaam is today. The basin consist of a few playing fields, footpaths and some urban farming, but apart from this it mostly consists of unused grasslands, swamps and forests. Because it is an unsafe place and badly connected to the rest of the city infrastructure, it has become a barrier. The annual flood combined with the constant still shallow water creates a good breading ground for malaria mosquitoes.

Bruka utan att förbruka - när andra intressen än ekonomin får styra

To have a forest area close to the city is of great importance for the city population?s well being. Children develop their motor skills, concentration and imagina-tion and the adults have a place to shake of the stress from work. Forest areas are used to exercise at, play in and to find a moment of peace and silence. The urban forest and the old farming pastures at Markussonvallen and Per-Isakssonvallen already has natural assets worth to preserve and a great potential to create more. The goal is to develop a forest with a variation of tree species and ground vegetation that will appeal to the human senses and different animal species such as birds, insects etc.

The Arctic SeaLodge: konceptutveckling av ett upplevelsebaserat havshotell

Syftet med studien är att studera hur ett kvalitativt turistiskt boende kan utformas utifrån ett upplevelseperspektiv. För att besvara studiens frågeställningar valde jag att utföra en kvalitativ undersökning i form av fem djupintervjuer. Tre av intervjuobjekten representerar turism och besöksnäringen i Sverige på tre olika nivåer - nationell, regional samt lokal. Detta för att få en bild av Sverige som destination samt en inblick i vad som händer på marknaden. De två övriga representerar hotellnäringen inom Swedish Lapland.

Svenska sojabönor - finns marknadsmöjligheter?

The large-scale soy cultivation has negative consequences for the habitat of local populations because of the intensive use of pesticides and the destruction of rain forests and eco-systems. GM soya, varieties are often used. The majority of Swedish people, however, do not want GM products in their food. It will be hard in future to ensure GM free food, particularly foods that come from countries where GM crops are grown on a large scale. It is very difficult to avoid cross- contamination when both GM and non-GM crops are grown in the same area.

Dealing with Dragons - parodi eller travesti på de klassiska sagorna?

Uppsatsen är en närläsning av Patricia C. Wredes bok Dealing with Dragons och undersöker huruvida boken i fråga är en parodi eller travesti på de klassiska sagorna, t.ex. Törnrosa och Askungen. Jag tar också reda på om det går att läsa boken på olika sätt beroende på hur stor förkunskap man har om de gamla sagorna. Gérard Genette har skrivit boken Palimpsestes: La littérature au second degré, och jag har med hjälp av en svensk översättning använt mig av hans teorier om hypotext - hypertext, parodi, travesti och transformation.

Spacehotel : Konceptutveckling av ett rymdinspirerat upplevelsehotell

Inom några år kommer Kiruna att bli Europas första och enda uppskjutningsplats för kommersiella rymdresor. Den som vill försäkra sig om en plats på rymdfärjan måste vara beredd att punga ut med 200 000 dollar. Alltså kan man anta att målgruppen för rymdturism är synnerligen välbeställd och därför ställer väsentligt högre krav på service, bekvämlighet och upplevelser än de flesta turister som idag besöker Kirunaregionen. Denna uppsats syftar till att undersöka hur ett koncept för ett högkvalitativt boende skulle kunna utformas utifrån ett upplevelseperspektiv. Vi har därför granskat hur behovet av ett sådant boende i regionen ser ut, med utgångspunkt i just rymdturismen.

Vitberget Skellefteå, ett kommunägt tätortsnära skogsområde ? föreningarnas och allmänhetens syn på hur skogen bör skötas

The question is who should govern and administrate a municipality owned urban forest? Should societies and the public be invited to participatory planning, who are the interested parties, could they be treated like a group and what are their opinions on administration and management? The study is carried out in a municipal owned forest Vitberget Skellefteå that is widely used by associations and individuals for recreation and training.This has led to several discussions in the local media about the management of the forest, especially in connection to harvesting. The work undertaken here has been to identify who has any interest in the management of the area. After identifying the interested parties, a selection of the societies, schools and pre-schools that actively uses the area as well as random individuals met in the area was interviewed. The questions asked can be divided into six main groups:? Communication with the municipality?s managers for the area? Interference from other activities? Views on forest management? Views on nature conservation? The uniqueness of Vitberget? Development opportunitiesThe crucial factors identified as being needed to succeed in managing an urban forest are long-term administration, information and communication.

Metod för kartläggning av lövråvara i Södra Skogs verksamhetsområde

Södra Skog chose in 2011 to convert the saw mill in Traryd to a gradually refined sawmill of hardwood. In 2009, they had also acquired the hardwood sawmill in Djursdala. This was strategically important for Södra's business since the demand for hardwood products has increased. The standing volume of deciduous trees in Sweden is today approximately 524 million m3sk and it has increased rapidly in recent years. However, the deciduous forests are to a large extent located in areas that are set aside for nature conservation and is thus not available to the industry.The goal of this work is to create a simple and reliable method for mapping of deciduous wood volumes in areas where Södra Skog is operating (Götaland excluding Gotland).The material that is used is raster databases with estimated forest attributes (kNN-Sweden), data from National Forest Inventory (NFI) and forest management plans.

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