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1122 Uppsatser om Natural regeneration - Sida 7 av 75
Vad påverkar skogsägarnas naturhänsyn vid föryngringsavverkning i region Mellannorrland? :
The objective of this thesis was to investigate what influence nature conservation measures taken at regeneration felling. Factors analysed were the forest owners´ situation and their characters, and information activities from wood-suppliers and the Regional Forest Board (RFB). The inventory was performed with a posted questionnaire followed up by telephone to forest owners and a posted questionnaire to wood-buyers.
The forest owners were grouped in three strata, depending on the quality results (D- polytax inventory) of the taken forest conservation measures, and for this investigation forest owners were sampled from the population in the tree groups. In total 73 % (41/56) of the sampled forest owners answered the questionnaire
Group A (17 answers): Good judgement
Group B (19 answers): Bad judgement
Group C (5 answers): This group was formed from the forest owners that were informed, by RFB, about nature conservation measures and culture history consideration before the regeneration cutting.
Att använda ett undersökande arbetssätt i NO-undervisningen : En jämförelse mellan kommunal- och resursskola
The purpose of this study is to compare an inquiry-based teaching method for natural sciences in municipal schools and special education and to find out if this way of teaching may be helpful when working with students with Attention Deficit Hyperactivity Disorder (ADHD).The Swedish national curriculum of 2011 states that teaching methods should be fitted to every student?s needs and preconditions. The implication of this is very important for all students, especially for children with special needs. The theoretical framework that has been applied as a foundation for this study is Vygotskijs "Zone of Proximal Development" and Deweys "Learning by Doing". The method applied for the study is a semi structured interview and five teachers where interviewed.The result of the study shows that teachers with a higher education in natural sciences are more confident with regards to teaching natural sciences and the application of the inquiry-based way of teaching.
Betydelsen av taggbuskar, ljus och hävd vid föryngring av ek (Quercus robur)
Many species and hence biodiversity depend on old, large oaks (Quercus robur) with hollow trunks. The populations of oak-living organisms have to migrate to a nearby old oak in order to survive the death of the host. The oak district south of Linköping, Sweden, is unique in area and the number of old oaks. It is anyway doubtful whether regeneration of oak will secure future continuity. Oaks are light-demanding and thrive in open pastures.
Multikriterieanalys av potentiella konflikter vid markanvändningsplanering - Naturstenbrytning i Lysekils kommun
The purpose of the essay Multi criteria analysis of potential conflicts concerning land use planning - natural stone mining in Lysekil municipal is to study possibilities and limitations in GIS based multi criteria analysis as a tool for land use planning. How GIS based multi criteria analysis can be implemented to localize potential conflict areas between natural stone mining and other land use activities and what advantages and disadvantages the method holds are the main issues of this study. The essay studies these questions through a case study, concerning the geographical area of Lysekil municipal in western Sweden and problematizes the interest of natural stone mining in relation to other land use interests. A literature study was carried through, concerning multi criteria analysis and planning. After collecting and processing of data the multi criteria analysis could be implemented in the ArcGIS tool Weighted Sum.
Mänskliga rättigheter vid en naturkatastrof : En jämförelse mellan Haiti och Thailand
There are three main purposes for this thesis; the first is to distinguish the possible violations that can occur in time of natural disasters. The second is to analyze if there is a correlation between political systems and how the effected country handles the aftermath of a natural disaster. The third purpose is to determine the role of the global community and what responsibility lies with them. The issue is often that the aid becomes the main object for discussion and analysis, but the focus rarely shifts to the effected State. Therefore the focus in this essay is the political system and how they cope with the human rights violations that can occur in a time of natural disaster.
Naturvärden i Killingeskogen : Biologisk mångfald och friluftsliv
Killingen is an area situated on an island called Resarö in the municipality of Vaxholm. The areais covered with forests with a varied topography and a mosaic of environments. The municipalitywants to keep the area unexploited, for recreational purposes but what are the natural values inthe forests? The survey concluded that a mosaic of nature types had high values and could behosts for vulnerable species.As part of the study, measures that will improve the quality of the paths and bathing areas for thelocal population was proposed as well as means to heighten or preserve the natural values in thearea..
Skillnaden mellan plagiat och imitation a?r milsvid : Fyra la?rare om elevtexter i gra?nslandet mellan imitation och plagiat
In school, pupils learn to critically relate to sources of various texts. In the course of time they also learn how to make references and cite properly. Yet, alarming reports show increasing cheating and plagiarism in colleges and universities. Plagiarism prevention services are used today in Swedish high schools. We are questioning how this relates to the sociocultural perspective and curriculum view of imitation as a natural part of the learning process, communication and language.Material from depth interviews, with four teachers in the school subject Swedish about their theoretical and practical approach to students' writing process and writing development are used to deal with the issues of this thesis.
Skrylleområdet - naturupplevelse som motivation till motion? :
Our lives in urban areas are becoming more and more inactive with negative effects on our
mental and physical health. Natural environments and physical activity have the power to
both prevent and reduce mental fatigue. Meanwhile we engage ourselves with physical
activity, the nature fascinates us with its complexity.
In April 2006, some of the visitors to the recreational area of Skrylle were asked to fill in a questionnaire which included questions about their habits within physical activity and the experience of nature. The questionnaires were then divided into two groups: those filled out by persons who exercise on regular basis (i.e. three or several times/week) and those who rarely exercise.
Barnet eller ämnet? : Lärarstudenters preferenser av didaktiska val vid naturvetenskaplig undervisning i förskolan
Teaching in pre-school usually takes its starting-point in children?s reality and curiosity. Apart from that it has also been important to take contains of a special subject under consideration, for example development of language and communication or mathematics development. The purpose of this study was to investigate how natural science as a special subject in pre-school education is expressed by five trainee teachers when they teach children at the age of 2-7. Generally the study focuses on the students? teaching actions as well as their line of argument about their teaching and the choices they have to make.
Naturlig nedbrytning av klorerade lösningsmedel i grundvatten
Chlorinated solvents are common contaminants in soil and water. Under anaerobic conditions microbes are capable of transforming chlorinated solvents into ethylene which would result in a remediation of the contaminated area. In order to use natural attenuation as a remediation method evidence of continuous degradation is required. Furthermore, the degradation must occur at a sufficient rate and continuous monitoring of the site is needed until the demanded levels are achieved. A field study was performed on the basis of data from a dry-cleaning facility contaminated mainly by perchloroethylene.
Hyggesbränning på Orsa besparingsskog - en studie på tillväxt och föryngring,15år efter etablering
The main purpose with this study was to investigate whether the tree growth differs or not in prescribed burnt areas compared to mechanically scarified. Together with the result from the main purpose, answers of whether it's possible or not to combine nature conservation with tree production in prescribed burnt areas was presented. In these areas the regeneration were analyzed to see if there was enough tree plants to comply with the Swedish Forestry Act regulations terms for approved regeneration. A field survey was conducted at 6 objects, three objects for prescribed burning and three for mechanically scarification. All objects were planted within the same year.
Humanioran och Open Access ? en kvalitativ studie i drivkrafter och strategier hos litteraturvetare inför publicering
The natural sciences and the humanities are associated with differentpublishing patterns. Open Access publishing are mainly associated withthe publishing patterns of the natural sciences. Many Swedishuniversities and research funders are proponents of Open Accesspublishing, what will that trend mean to the scholars with a publishingpattern not corresponding to Open Access? In this paper literary scholarsare interviewed for the purpose of learning the motives and strategieswhich form their publishing pattern, and how they relate to Open Accesspublishing. The results show that literary scholars are less competitiveand hold a more gentle knowledge-sharing ideal, than natural scientists.The drive to gain acknowledgment and the recognition of colleagues inorder to collect academic capital as Bourdieu describes the academicfield is still present though.
Förbättring av upplösningen i Landsat 7-bilder med hjälp av bildfusion
The purpose of this master's thesis is to evaluate whether it is feasible to use the panchromatic band of Landsat 7 in order to improve the spatial resolution of colour images. The images are to be used as texture in visual databases for flight simulators and for this reason it is important that the fusion preserves natural colours.A number of methods for fusing panchromatic and multispectral images are discussed. Four of them are implemented and evaluated. The result is that standard methods such as HSI substitution are not suitable for this purpose since they do not preserve natural colours. However, if only high frequencies of the panchromatic image are used the resolution can be improved without noticeable colour distortion..
Natur på skolgård : värdet av naturlika miljöer och deras utformning för barn
As a result of my fascination for nature I have chosen to study the possibilities to introduce natural environments on schoolyards. Too many schoolyards are lacking vegetation and many of them look like sterile asphalt deserts.
The master thesis consists of two parts. The first part is based on literature studies and the second part in which findings from part one are put into practice. Five examples are presented; four schoolyards in Malmö; Kryddgårdsskolan, Kirsebergsskolan, Rörsjöskolan and Lindängeskolan and one in Kalmar; Åbyskolan. Malmö Naturskola has been working with the chosen areas on the schoolyards in Malmö.
Trafikklasser för markplattor av natursten : förslag till klassificeringstabell
This report deals with hard surfaces and the factors which are behind the criteria for dimensioning, also dependent on the level, or volume, of traffic. A test was made on slabs of two kinds of natural stone. This was made to see if the values that were reached for breakload was transferable to the same tables that the concrete industry is using for surface dimensions of slabs and paving stones. The test showed very high values and the result, together with the written study, led to the author?s suggestion for a classification table where slabs of natural stone were divided in to different classes depending on traffic, thickness and durability..