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1924 Uppsatser om Land degradation - Sida 19 av 129
Undersökning av sambandet mellan strålningstemperatur och NDVI i Sahel
Several studies have analysed the relationship between Normalised DifferenceVegetation Index (NDVI) and radiative surface temperature. A main goal for moststudies have been to find the best method for carrying out land cover classificationsand to study land cover changes, based on a combination between the twoparameters. Since atmospheric components have a significant influence on bothparameters, most applications were based on multi-temporal data. The quality of theindividual values in such a combination is improved, but the biophysical justificationis uncertain. This study presents a different method, based on only the combination ofvalues that have been registered the same day and about the same time of the day.125 daily images of NDVI and 250 images of radiometric temperature were used inorder to analyse the relationship between (1) NDVI and radiative temperature and (2)NDVI and relative temperature difference between early morning and mid-day.Results between NDVI and radiative temperature show a significant negativecorrelation on areas where a distinct growing season develops, and a strong positivcorrelation where vegetation is abscent throghout the season.
Till synes orörd skog : naturvärden och kulturhistoria i Rekdalen under 400 år
Nature conservation has for a long time been founded on the assumption that high ecological values depend on low human impact. In Sweden this has led to forests with these characteristics being strictly protected from human influences. However, it is also known that historical land-use can enhance ecological values in forests. Mountainous forests in Sweden, which have not been affected by modern forestry, have for a long time been considered as untouched by people. However, forest history research has in recent years shown that even these areas have been used by people for a long period of time.
Jordförvärvslagens ändring 2005 och dess påverkan vid skogsfastighetsköp : The amendment of Lad Acquisition Act 2005 and its influence on forest property purchase
Since the beginning of the 1900s Sweden has had laws and rules governing the ownership of agricultural and forest land. The foundations of the current Land Ownership Law, ?Jordförvärvslagen 1979:230(JFL)?, are from 1979. The most recent review and adaptation of the law occurred in 2005. Its main purpose is to prevent a passive ownership of land in Sweden and to ensure that the land is actively worked.
Skogsägarenas inställning till markberedning i västra Värmland
According to a press release from the Swedish forest agency in May 2014, western Värmland has the worst regenerations of forest result in the whole of Sweden. The scarification frequency is low in the area. AB Hilmer Andersson want´s to know if the private forest owners want to scarify more than is done today. Good regeneration is important for private forest owners so they can have a long term forest management and economics of their forests.
This academic study is done as an opinion poll. The purpose of the study is to see how big the interest of scarification among the private forest owner is.
Peas as feed for dairy cows
AbstractAn approaching overproduction of cereals and a future uncertain supply of non genetic modified vegetable protein feedstuffs have increased the interest in an expansion of the domestic production of protein feedstuffs in Norway. Besides rapeseed (Brassica campestris), peas (Pisum sativum) may be the most suitable crop for this purpose. Peas are characterized by having a relatively high content of crude protein, ranging between 20-26%, a high content of starch, 42-51%, and a low content of fat. In general, the energy value for peas is higher than for barley but lower than for rapeseed and soybean meal.Pea protein consists of albumins and globulins to 85-100%, which leads to the fact that a large part of the pea protein is soluble and degradable in the rumen. Starch in peas is on the other hand to a large extent resistant to rumen degradation compared to starch from other starch rich feedstuffs.
Krishantering i förskolan
Detta examensarbete visar att upplösande av samägande av fast egendom är viktigt då ägandet av fast egendom är kopplat till rättigheter såväl som skyldigheter. Det är av mycket stor vikt att ägande och brukande av skogsfastigheter fungerar och att det finns förutsättningar för att lyckas med det. Dock kan samägandet i vissa situationer hindra utvecklingen av fastigheten. Skogsbruket är en viktig inkomstkälla för den private skogsägaren såväl som för Sverige, skogsbruket i vårt land stod 2010 för 7 % av världens totala export. Även om Sverige är ett litet land i världen, är det inte obetydligt inom skogsbranschen.
Biotopskydd av stenmurar : Skäl för dispens
Stone walls in agricultural land are incorporated in the general protection of biotopes. They are protected because they provide a habitat for endangered species. Therefore it is illegal to carry out proceedings in an area that is included in the protection of biotopes. In order to do that, exemption is needed which can only be granted if there are special reasons. The essay stipulates what these special reasons are.In an exemption errand the interest for nature conservation must be weighed against a public or a private interest.
Från det livskraftiga lantbruket till det olönsamma : en studie av skäl till minskad verksamhetsomfattning och varför man bor kvar
This essay is a study that contributes to the larger research question ?Why do farms shut down?? The subject was chosen because it is a relevant problem that needs to be studied more. This study's boundary is to investigate the reasons for decisions leading to the farms at the Torstuna community, Fjärdhundra, changes in any activity scale or the outlook of the entire farm. When a decision is made, there are usually several reasons behind it and it is these reasons which this essay is aiming to study. The question "What are the reasons for the elderly to live on the farm even though the farm is not cultivated by them?" is also covered in the study.
Fiskarebönder och landskapet i Karlshamns skärgård förr och nu
Hällaryd archipelago, consisiting of approx. 50 islands, islets and skerries, is situated east of Karlshamn city in Blekinge province. The archipelago has been shaped into a rift valley by volcanic activity, the inland ice and maritime climate.The archipelago is divided into seven main islands: Bockö, Västra Bokö, Ekö, Hallö, Joggesö, Mjöö and Tärnö. This essay will connect population changes with land use.
Skogstillväxten ca 20 år efter plantering på Flakmossen : dikningens och gödslingens betydelse vid beskogning på en avslutad torvtäkt i Värmland
This study was performed in an afforestation experiment established 1982 on an abandoned peat harvesting area, Flakmossen, in the province of Värmland, SW Sweden. The experimen-tal design include planting with Scots pine (Pinus sylvestris), in combination with various drainage intensities (20, 30, and 40 m between ditches), and fertilizer doses 0, 100, and 200 g PK per seedling applied at the date of planting.
The aim of this study was to achieve more knowledge about the conditions on afforestation of peat harvesting areas, especially regarding drainage intensity and fertilization requirements, by means of determining the stand growth and yield in the Flakmossen trial.
The forest growth did not differ significantly between the drainage intensities tested when the same amount of phosphor and potassium fertilizer was added. Thus, shorter distances between ditches than 40 m can not be recommended.
When no fertilization was carried out seedling survival was very low, and the growth of sur-vived seedlings was poor. The largest diameter and height growth were observed in the areas where the highest dose of phosphorus and potassium (200g/seedling) was given.
Äldre kvinnor från forna Jugoslavien och deras aktiviteter i dagligt liv
Att vara en äldre invandrare i ett nytt land kan påverka erfarenheten och åtagandet i människors vardagliga aktiviteter. Det är ett flertal olika faktorer som påverkar delaktigheten av aktiviteter i det dagliga livet. Förändringar i det vardagliga livet kan leda till att aktiviteter, struktur, syfte och motivation förändras eller till och med försvinner. Studiens syfte var att beskriva aktiviteter i dagligt liv hos äldre invandrarkvinnor från forna Jugoslavien men även att beskriva vad som motiverar dem att utföra de aktiviteter som de gör.Till studien valdes en kvantitativ design med kvalitativa inslag eftersom den baserades på ett strukturerat intervjuformulär med två tilläggsfrågor. Studiens resultat visade att ett flertal deltagare har förändrat sina dagliga aktiviteter och att saknad efter den sociala gemenskapen har medfört ett mer inaktivt liv.
Hur hushållas det med mark och vatten? en studie av tillämpningen av hushållningsbestämmelserna i 3 och 4 kap MB
The national spatial planning guidelines
and the subsequent legal regulation
in the Natural Resources Act and the
Environmental Code has been a part of
the Swedish planning system for almost
40 years. In the recent years, critics have
claimed that the regulations are outdated
and does not work the way it was intended.
This paper examines closer why it is
perceived that the regulations does not
work, with a focus on how the national
interests are managed in the municipal
planning. Why is the national interests
not applied in the municipal planning as
intended? Is the error in the system or in the
implementation of it?
The aim of this essay is to study the gap
between theory and practice by studying
how the land management provisions in
the Environmental Code is applied in five
selected municipalities. The aim is also to
find interesting issues for futher studies of
the topic.
Förbättring av U-värde i träkonstruktion för fönster med Aerogel
When constructing a building, a number of aspects must be harmonized in order for it to fulfill requirements ? a building must fulfill requirements such a load-bearing, conservation of energy and a good indoor environment by means of, among other things, moisture proofing .Moisture problems in buildings can affect health negatively. As we are increasingly staying in indoors, demands on a good indoor environment are higher.This work starts with examining moisture problems in slab-on-ground solutions, and then links the various scenarios to moisture problems in a concrete slab of a real building. The building with moisture problems is located in Årby by in Borlänge and moisture damage was found in the slab at an apartment adjoining wall.By reviewing literature written within the field of moisture problem, making hand calculations and modeling in the program Comsol Multiphysics, judgments are made to find explanations as to why the rise of moisture occurred in the building in Årby by.Generally, the following guidelines may be used to reduce the risk of moisture problems in slab-on-ground constructions:Drying of construction moisture before laying the floor material.Using draining layer beneath the slab, to prevent capillary suction.Using insulation under the slab, partly for comfort and to establish the temperature difference between the ground and the concrete slab.Avoid direct contact between the wood and concrete, due to degradation and fouling smells that normally occurs.If necessary, use additional vapor barrier.In addition to the above, there are various methods for moisture-proof and moisture-monitoring by design or by the method ByggaF suited for the entire construction process various events..
Vegetationsbekämpning i dräneringsdiken inom ett järnvägsområde i Västra Götalandsregionen
My purpose with this thesis has been tostudy the intersection between Landscapearchitecture and Land Art. They both relateto the landscape in some way whetherit is to the urban landscape or thenatural landscape.What tangent points are there betweenthese two subjects, and can you learnsomething of the artists approach to thelandscape?Land Art is an art movement that began inthe late 60?s, what links are there to thecurrent landscape?Last summer, I travelled around the U.S.for a month and visited the three classicLand Art projects. Lightning Field in NewMexico, by Walter De Maria, Sun Tunnels inUtah, by Nancy Holt and the Spiral Jetty,also in Utah, by Robert Smithson.The sites where visited from half a day upto 24 hours and was described and analyzedwith text and photographs.To visit these sites has been crucial formy thesis and will affect my future workas a landscape architect. The use of themethod has been a thought of mine for along time, particularly to analyze ordescribe a landscape with images.
Tycker dagens naturbrukselev att djurskötaryrket har hög status? :
In this degree project I have tried to analyse thoughts about what?s important in the
future work among students that are leaving the Land and animal husbandry programme.
I have also asked employer to understand to what degree they knew about the coming
employees thoughts about the future.
The method was a questionnaire which was sent to 14 schools of Land and animal
husbandry.
The questionnaire was answered by students in their last schoolterm. I got 167 answers
from students. 11 employer also were asked about their ideas conserning the students
thoughts about their coming work.
The questions where about wages, working environement, responsibility and
further education. The questions were multiple choise.