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2016 Uppsatser om Young stands - Sida 2 av 135

Identifiering av konfliktbestånd med hjälp av laserskanning

The interest in harvesting wood fuel in conflict stands has grown in recent years as a consequence of the increased demand for biofuel. Conflict stands are young forests that have not been cleaned and have a large number of stems ha-1with a great height and diameter distribution. This means that traditional field measurements in conflict stands are difficult and very time consuming. Therefore, the forestry sector is in need of new, more efficient inventory methods. In this study, the Lidar data from Lantmäteriet?s (the Swedish mapping, cadastral and land registration authorities) new national height model was used in combination with plots from the Swedish national forest inventory from 2009 to create functions for; height, volume, diameter and number of stems.

Identifiering av fel i skogliga beståndsregister med hjälp av satellitdata :

This thesis has focused on the possibility to use a satellite image method developed by Metria Mijöanalys to identify stands that are wrongly registered in Holmen Skogs database. The method is only intended for identifying stand with poor descriptions in Holmen?s database that needs to be updated and not for updating the stand information. The study area is located several km west of Hudiksvall on the borderline between Gävleborgs- och Västernorrlands län. The area is covered by a SPOT image from 2005. By which Metria Miljöanalys has made estimates of forest parameters for all stands in the area, and compared them with corresponding estimates according to the stand database.

Goliatmusseron (Tricholoma matsutake) - kräver den en kontinuitet av träd? :

Modern forestry management may disadvantage some mykorrhiza forming fungi because; they are dependent on late successions and cannot survive the constantly recurring breaks in the continuity of their host tree. For this study the specie goliatmusseron (Tricholoma matsutake) was chosen to investigate this possibility. In Sweden T. matsutake is found in greatest amounts north of Örnsköldsvik on glacifluvial sandy soils in association with pine trees and reindeer lichens. Seventy two forest stands where the specie previously had been found were studied; 62 in the northern part of Sweden and ten in the southern. Several indicators were studied to find out if these stands have had a continuity of living trees.

Granföryngring på tallmark, hur ofta förekommer det? :

This survey was made during the summer of 2004 and the spring of 2005, on commission from the National Board of Forestry. The aim of this report was to investigate how often Norway spruce (Picea abies L. Karst), is planted on poor Scotch pine (Pinus Silvestries) sites and if it affects the yield of Norway spruce? In order to investigate this, data from 29 stands witch had a lower site index than T24 was collected. The investigated stands were situated in the southern-eastern Sweden. In 20 plots in each stand, the highest tree, age, number of seedlings, site index and tree species per stand were measured.

Productivity of Norway spruce (Picea abies) and Scots pine (Pinus sylvestris) in coastal areas of northern Sweden

Productivity of Norway spruce (Picea abies) and Scots pine (Pinus sylvestris) was studied on 12 sites in coastal areas of northern Sweden. On each site, sample plots were placed in adjacent Norway spruce and Scots pine stands with similar ages in between. Basal area, tree height, Site Index, volume production, simulated maximum mean annual increment (MAImax) and tree vitality were compared for the two species. Average basal area at the time of measurement was 30.4% larger for Scots pine stands than for Norway spruce stands. The difference between the two species in basal area increment during the last 10 years was related to stand age.

Beståndsutveckling i stormskadade granbestånd

The storm Gudrun in 2005 led to massive windthow damage in forests in southern Sweden. Since then there has been a growing interest in factors influencing wind damage in above all Norway spruce (Picea Abies) stands. Although many other interesting areas still need to be examined. In 2005 there where a lot of stands that suffered different degrees of damage, a lot of these stands weren?t cut, but instead left to grow. The future development of these stands is uncertain and the guidelines are unclear.

Prestationspåverkan av flerträdshantering i klena gallringar

The aim of this study is to investigate how multiple tree handling harvesters perform compared to earlier developed standards. The study shows that multiple tree handling harvesters are more efficient in thinnings stands with mean stock volumes less than 0,12 m3fub per stock. The increased efficiency is different for different mean stem classes. In stands with a mean stem volume of 0,04 m3fub per stock, the increase can be as high as 40 percent while it is about 10 percent in stands with a mean stem volume of 0,12 m3fub. Comparisons have been done between stands that are felled with partly limbed stands and stands without partly limbed assortments. The difference in performance is clear and shows that the partly limbed assortments strengthen the multiple tree handling harvesters positive effects in low dimension thinnings.

Ungdomsvåld : Ungdomars föreställningar om ungdomsvåld och dess orsaker

The purpose of this essay was to examine teenager's views on violence among young people.Our main questions were: What kind of views on violence among young people do teenager's have? What do teenager's think about what causes violence among young people? In what way does scientific knowledge confirm young people's views about what causes violence among young people?To answer these questions we designed a questionnaire which we distributed in three 8th grade classes. We also interviewed five teenagers about violence among young people, to get a deeper knowledge about their views.The results of this study show that the teenagers think that violence among young people has increased and that the violence mostly appears between different groups of young people. The teenagers also think violence among young people as a phenomena due to different kind of reasons..

På jobbfronten mycket nytt. Hur skuld och gemenskap påverkar utfallet för Försvarsmaktens rekryteringskampanjer.

Since the first of July 2010, military training in Sweden is no longer mandatory. Ever since then the Swedish Armed Forces have needed to attract people interested in serving as soldiers, in new ways. The campaigns for doing so have been much debated and discussed in Swedish media. This thesis tests how an increased presence of guilt and belongingness in the Swedish Armed Forces recruitment campaigns affects young people - how their attitude toward the Swedish Armed Forces possibly changes as well as their intention of applying to military training. Guilt and belongingness were chosen for several reasons.

Biomassauttag vid delkvistat sortiment i klen gallring

The purpose of this study was to estimate the removal of biomass in connection with thinning operations in Young stands that are dominated by small diameter trees. The economy of such operations depends on the products generated as well as the performance of the harvesting systems. Conversion tables designed to predict the outcome based on harvesting method was another goal of this study. Removal of biomass affects the nutrient composition of the site. Therefore it is a purpose that this study will provide researchers with some variables that can be utilized when studying this aspect. Trees were harvested and divided into bunches based on diameter.

Unga Kommunpolitiker : Varför blir vissa unga kommunpolitiker, hur upplever de att det är och vad tycker de ska göras för att engagera fler unga inom politiken?

AbstractC-essay in political science by Anna BryntessonSupervisor: Michele MichelettiSpring 2006?Young municipality politicians - Why some young people become municipality politicians, how they think it is andwhat they think should be done to engage more young people in politics??The Swedish municipalities have problem with that they doesen´t have many politicians under 30 years. Many of the young people who become politicians drop out after a short while. The conclusion of this is that the Swedish municipalities have problems to engage young people in politics.The purpose of this essay is to study and try to find out what young people think about politics? This is done with personally interviews with 7 young municipality politicians from the municipality of Eda.The specific research questions are:? Who are they which became young municipality politicians?? What was the reason that they became politicians?? How do they look at municipality politics?? Which roll and function does the young people have as a municipality politician?? What do they think should be done to get more young people to engaged in politics and become a municipality politician?The young Eda politician is a girl living in a house in the country and she has middle education.

Behövs det kommunala uppföljningsansvaret?: Tjänstemäns syn på uppföljningsansvaret och avhopp från gymnasieskolan i Helsingborgs kommun

The number of young people that graduate from upper secondary education has decreased while a growing number of young people are in an outside position in the sense that they neither work or study or have any other known occupation. In addition to this the labour market has gone trough changes, which has brought difficulties for some groups to establish themselves on to the labour market. One of the groups that have been affected by this is the young people. As an answer to the increasing number of young people in an outside position, a new law was introduced on the 1st of July 2005. The law is called (kommunala uppföljningsansvaret) and it stands for the municipality's responsibility to follow up on young people between the age of 16-19 years that is not enrolled in any upper secondary school and that does not have any other known occupation.The purpose of this essay has been to examine how the responsible administrations in Helsingborgs municipality view their responsibility to follow up young people between the ages of 16-19 years and the practical application of the law, and also if they can see any risks with not following up on young people in that age span.

Miljonprogrammet : mytbildning, arkitektur och förnyelse

Dead wood is important for many species. The amount of coarse dead wood (diameter >10 cm) is much lower in managed forest than in unmanaged forests. Stumps constitute the largest proportion of the volume of coarse dead wood in managed forests. Since stump harvest for biofuel may increase, the amount of dead wood will decrease even more, which may threaten biodiversity. The first aim of this study was to compare the amounts of fine woody debris (FWD, .

Mortalitet av bok i Biskopstorp och Frodeparken naturreservat, Halland :

The aim with this study was to investigate mortality in older respectively younger beech stands (Fagus sylvatica), the different types of dead wood in the forest and the availability of coarse woody debris (CWD). The research was carried out in previously managed and seminatural stands in Biskopstorp and Frodeparken, located north of Halinstad in Halland,Sweden. Data were collected from 22 stands with at least 50 % beech and with a minimum age of 5 1 years, ranging in size from 0,67 to 19,9 ha. A transect was placed in each stand, in which the diaineter on both dead and living trees with a minimum diameter of 50 mm was recorded. On seven to 13 dead trees, depending on the size of each stand, decomposition stage, primary and secondary cause of death, amount of fungi and the type of the dead wood was noted.

 Unga föräldrar :  En kvalitativ studie om ungt föräldraskap sett utifrån professionellas perspektiv

The purpose of this paper was to examine how young parenthood is represented by the professionals and their thoughts and experiences from meetings with the young parents, and how the professionals work with this group of parents. As professionals we refer to those who work with young parents, and the definition of young parents are parents in the ages 15-24. The paper also discusses what needs these parents have, and what kind of support the society offers, according to the professionals. The method we worked with was interviews and we interviewed six professionals to find out how the professionals looked upon the young parents and their situation. Earlier research has stated that young parenthood is associated with many risks and disadvantages for both the parents and their children.

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