Sökresultat:
2476 Uppsatser om Forest history - Sida 63 av 166
Effekt av gödsling och gallring på mö?belvirke av furu
This thesis is about the effects of fertilizing and thinning on furniture timber from redwood. Interviews of furniture manufactures have been made and observing of timber from the Swedish fertilizing and thinning trails. The result from the interviews showed which properties that is important for the furniture manufactures and then the result from the observation showed which type of management of the forest that gave the most timber that had those properties. .
Analysis of eucalyptus plantations on the Iberian Peninsula
This thesis analyses the prerequisites, profitability and competitiveness of eucalyptus plantation on the Iberian Peninsula and in Brazil. The thesis has a macro perspective and analyses a typical hectare of eucalyptus in each studied region.
A survey methodology was used as a strategy to cover a broad perspective using expert respondents.
The regions studied on the Iberian Peninsula were the ones found suitable for eucalyptus plantations from an economic point of view. The studied regions were Huelva in the South West of Spain, Galicia in the North West of Spain and Portugal.
Ilha Formosa: Potential för permanent fred över Taiwansundet
Taiwan räknas idag inte som en stat, har ingen plats i FN, och territoriet efterfrågas av Kina. Hur ser möjligheterna ut för en lösning av problematiken mellan Kina och Taiwan? En problematik som dessutom har en lång historia och vars grund främst står att finna i revolutionen 1949 i Kina. Framförallt Peter Wallensteens teorier om uppskjutande till framtiden och förändrade positioner, som konfliktlösningsmekanismer anses vara relevant. Den ökande globaliseringen och interdependensen samt det omfattande ekonomiska utbytet mellan aktörerna i vårt fall är också relevanta faktorer för utvecklingen.
Stamräkning och identifiering av åtgärdsbehov i röjnings- och gallringbestånd med hjälp av låghöjdsbilder
This report is an assessment of the feasibility of using aerial photographs to estimate number of stems per hectare in young forest stands, used together with upper height to determine the need for pre-commercial thinning or ordinary thinning cutting. Aerial photo-interpretation was conducted in 2007 on assignment of Stora Enso Skog AB. A mean height function based on stand age produced with data from Bergvik Skog AB?s 2006 forest inventory assessment was used as a proxy for upper height and used together with photo-interpreted number of stems per hectare to determine the need for thinning cutting according to Bergvik Skog AB?s definitions. The test area is located north of Falun on Bergvik Skog AB?s land.Flight altitude was approximately 900 m above ground and the aerial photos were taken by L&L Flygbildteknik AB.
Stormskador i lärk och gran : en jämförelse efter stormen Gudrun
The storm Gudrun January 8-9 2005 felled about 70 millions cubic metres forest in southern Sweden. The majority of the wind damaged forest was spruce (Picea abies). In order to decrease the risk of wind damages in the future other trees species are of interest for forestry in southern Sweden.
The purpose of this master thesis was to study if larch were more wind tolerant than spruce. The method was to compare larch, Japanese larch (Larix kaempferi Lamb.), European larch (L.
Underröjning i förstagallring :
This report is a thesis work for a B.Sc. in Forestry exam at the School for Forest Engineers,
SLU. The work was an assignment from Sydved and the aim of the work was to investigate the economical output of removing understorey trees before first thinning.
Four treatments were studied.
- no cleaning before thinning
- cleaning of all trees less than DBH 5 cm before thinning
- cleaning of all trees less than DBH 7 cm before thinning
- cleaning of all trees less then DBH 9 cm before thinning
The result shows a decrease of the cost per m3 for the harvester with about 38% if all trees less than DBH 9 cm was cleaned before thinning compared with the un-cleaned area. At the same time the total net revenue increases with about 22%.
.
Effekter av gödsling i äldre tallbestånd på renbetesväxter i fält- och bottenskikt :
Reindeer husbandry and Forestry are both area related industries and will in big extent use the same lands. Conflicts often arise because of that the industries have different interests. Many of the activities done by the forestry influences the reindeer husbandry in an undesirable way, simultaneously as the reindeer husbandry activities can have negative consequences for the forestry. One such forestry activity is fertilization.
It was during the 1960´s forest fertilization began to be practiced and the reason was that the increase in growth that the fertilization gave could be able to cover for the future shortage in wood many feared.
During the 1970´s when the fertilizing activities were most intensive about 200 000 ha was fertilized annually.
Kolbalansen vid olika skötselstrategier för skogen på Tagels fastighet.
Since the 19th century the concentration of CO2 in the atmosphere hasincreased by 40 percent as an effect of the use of fossil energy sources.Increased concentration of CO2 will likely lead to increased temperature,changes in precipitation, rising sea level and increased frequency of extremeweather like storm events. A step to reduce emissions of CO2 and mitigateclimate change, for the property of Tagel, can be to adopt new silviculturalstrategies and analyse which is the most effective. As a result of that, threescenarios was produced, business-as-usual (BAU), increased set aside landand energy. An introduction of windpower at Tagels estate (property) andeffects on carbon balance was also examined. By using the Heureka systemand LCA-analysis in this study, it showed that the scenario of increased setaside land was the most efficient way to reduce carbon dioxide (CO2)emissions for the analysed period of 100 years.
FN och legosoldaten : En undersökning av förhållandet mellan globaliseringen, FN och den moderna legosoldatmarknaden
[utdrag] Det är mycket svårt att vid en första anblick försöka fånga begreppet legosoldat.Hur vi än väljer att se på legosoldaten och hans verksamhet är det föga troligt att han kommer att försvinna inom den närmsta framtiden och det internationella samfundet blir således tvunget att på något sätt ta ställning till denna verksamhet.Före nationalstatens bildande tävlade andra identiteter än den nationella om företräde och att slåss i någon annans sold var inte förknippat med det landsförräderi det senare skulle komma att innebära. Från kalla krigets slut och framåt har emellertid nationalstaten kommit att utmanas av nya krafter. Globaliseringen har lett till nya forum för transnationella förbindelser och öppnat upp för grupper, organisationer och företag att sprida sig och bredda sina kontaktnät över hela världen. Kan dessa möjligheter erbjuda legosoldaten en ny marknad och nya uppdragsgivare? Om så är fallet hur kan vi hindra, eller alternativt utnyttja, en sådan situation? Om legosoldaten, i form av moderna privata företag, än en gång beträder slagfältet på order av legitima härskare, hur skall vi hantera situationen? Och vem är vi?.
En bro mellan teoretisk och praktisk kunskap : En fenomenografisk studie baserad på lärares uppfattningar kring teoretisk och praktisk kunskap, metod och lärande- miljöer
This thesis is intended to respond to the extent to which South African textbooks on the subject of history is linked to the governmental policy documents and whether they are producing and reproducing national identity. The two textbooks are aimed at students in grade 10. Both books were produced in 2008 but published by different publishers.The essay is based on Norman Faircloughs critical discourse theory which has been supplemented by Michael Billings theory Banal Nationalism, which assumes that it is the national words that remind us daily of our homeland that is producing and reproducing national identity. The survey shows that both textbooks are closely tied to the government policy document for the teaching of history. The textbooks refer to the policy, both explicitly and implicitly. The two textbooks reproduce a common national identity in South Africa based on the discussions taking place in society.
En ?vergiven torpmilj?. Materiella och immateriella l?mningar fr?n torpen kring Brunnslid i Kinneveds socken, V?sterg?tland.
This essay presents an investigation of the ruins of an assembly of crofts in a rural area in the south of Sweden, outside the town Falk?ping. Using literary sources and intangible sources, and then combine them with the information found by investigation of the physical remains of the crofts, the essay attempts to capture the life and the living conditions of the crofters. The investigation is focusing on the period between the nighteenth century and the first decades of the twentieth century, and looks into the the living conditions according to, for example, the buildings, the orientation in the landscape, demografical changes, the transformation of the area over years and how the crofters were affected by powerty.
The investigation shows that the crofters in many ways were in vulnerable and exposed positions, powerty summarized as a lack of freedom ? concerning economical, political and social dimensions.
Revidering av rockdatabas
Svenskt Rockarkiv is an organization located in Hultsfred, Sweden. Its goal is to collect and document the history of Swedish rock music. The archive contains several types of documentation, such as audio recordings, photographs, posters, video recordings and books representing Swedish rock music history. In order to store information about the audio recordings in the archive, Svenskt Rockarkiv uses a SQL Server 2000 database and a client application written in Microsoft.NET C# and Windows Forms. The purpose of this degree project is to audit the database and windows client, since the organization has needs of new functionality.
En diktator, en vampyr och färgen grå : Förutsättningar för rumänsk samtidskonst före och efter 1989
The conditions for art in Romania have gone through big changes since the collapse of the regime in December of 1989. Under the Communist regime the artists had to work within a dualistic system completely unlike the one that developed in the West during the same period.Similar to the other countries of the former Eastern block, the communist Romanian state had understood the great potential that art has as a form of propaganda. Thus the regime secured full control over the art that would be allowed into the public space. In response to the confines set on the artistic expressions, a non-official art began to develop alongside the official art of the state.These two layers of Romanian art history were dissolved when Ceausescu?s regime finally came to an end in 1989.
Brunius, Zettervall och Graebe : ett jämförande studium av tre domkyrkorestaureringar
The purpose of this paper is to clarify and understand the difference between Brunius?, Zettervall's and Graebe's valueing of a historical building, the cathedral of Lund. Between 1833 and 1963 the cathedral of Lund went through three larger restorations. The character of the restorations however differs a lot between the three church architects, Brunius, Zettervall and Graebe. In a time of low interest for the Middle Ages and of many demolitions of churches in the countryside, Brunius stood out as a researcher and an enthusiast of that special time.
Man måste anpassa sig hela tiden : Två föräldrars livsberättelser
Studiens syfte är att, med hjälp av life-history metoden, bidra med en fördjupad förståelse av hur föräldrar med utländsk bakgrund upplever och erfar sitt liv under ankomsten till Sverige och hur de minns och konstruerar sin egen migrationshistoria och sönernas skolgång. Livshistorierna baseras på intervjuer med två föräldrar från Irak och Iran. Föräldrarnas utsagor visar att de livsval som föräldrarna har gjort har haft betydelse för sönernas skolgång. De har valt att undvika att bosätta sig i segregerade områden och de har strävat efter att bli integrerade i det svenska samhället. Familjer med utländsk bakgrund genomgår en ackultureringsprocess och de båda informanterna tillhör assimilerade familjer vilket betyder att de har anammat majoritetskulturens normer. I informanternas utsagor belyses de erfarenheter de har av maktförhållandet mellan minoritetskulturer och majoritetskulturer vilket leder vidare till begreppet intersektionalitet.