479 uppsatser · sida 6 av 32
rain gardens som ett hållbart inslag i vägmiljö
… innan det rinner ut i havet. En rain garden är en slags infiltrationsbädd med vegetation som tar emot vattenavrinning från omkringliggande hårdgjorda ytor och kan översvämmas under en kort period innan vattnet infiltreras. Därmed avlastas de konventionella rörsystemen och vi får …
… from a helicopter. The pictures was at last taken from a digtal camera and the vegetationheight was mesured with a laser. The gear was supplied from Kallax Flyg AB, Luleå. In the trial 15 stands was selected depended on age and different mixtures between pine (Pinus sylvestris) …
… area is situated in the V. Torsås parish, County of Kronoberg. The vegetation was measured in the tree, bush and field layer inside and outside an exclosure. The results in this report are in many ways supporting similar studies. All species in the tree and bush layer, except …
… occurred during springtime, when soil samples and approximation of damaged vegetation cover was made. Impacts on grassland, soil and forest of the animals as well as animal cleanliness were evaluated for each farm. Results from the study show that outdoor wintering of beef …
… och nederb?rden i Arktis, vilket f?rv?ntas f? stora konsekvenser f?r vegetationen som finns d?r. F?r?ndringar i sammans?ttningen av funktionella v?xttyper kan vara en viktig faktor till f?r?ndringar i kolbalansen och bidra till att avg?ra om Arktis f?rblir en kols?nka snarare ?n …
… torra åren hade lett till matbrist i form av förstörda skördar och annan vegetation, samt boskapsdöd. Året 1973 nådde torkan sitt klimax i Sahelområdet, vilket fick till följd att 50% av boskapen dog och hungersnöden tog mer än 100 000 människoliv (MacDonald 1986). Bilder och …
Several studies have analysed the relationship between Normalised Difference Vegetation Index (NDVI) and radiative surface temperature. A main goal for most studies have been to find the best method for carrying out land cover classifications and to study land cover changes …
… carried out using the PROSPECT-model by Jacquemoud & Baret (1990). During the vegetation period, the state of the canopy moves towards a closed canopy, with sparse vegetation in spring. The MCRM-model was used to perform a ”spring” simulation, which was compared to the original …
vegetationshistoria i Hamra nationalpark under 2500 år
Pollen analysis of a peat core was used to reconstruct the last 2500 years of vegetation history, with focus on the impact of anthropogenic disturbance, in Hamra National Park, central Sweden. In addition, analysis of pollen in soil samples was performed in an attempt to locate …
en pollenanalytisk studie av en fäbodvall i Ängersjö, Hälsingland
By using pollen analysis and 14C-dating, the history of vegetation and land use at the old shieling place (Sw: fäbodställe) Öjingsvallen in Ängersjö parish, central Sweden, was studied. The aim of the study was to answer the following questions: 1) When was Öjingsvallen …
en studie av olika beståndstyper inom Hamra kronopark, Dalarna
… to either human impact or to site properties, such as ground moisture and vegetation type. A side study included an inventory of a number of cyanobacterial tree lichens on aspen and goat willow in order to try to relate the occurrence of these lichens species to stand history …
en studie av 21 drabbade objekt i södra Sverige
… Pice Abies. The average siteindex was G29. The most frequent type of ground vegetation was ground whiteout vegetation. The average track size had a depth of 23 cm and a length of 7.1 meters. The results of the inventory shows that only in 3 out of 21 stands more than 40% of the …
… Vidare gjordes analys av flygbilder över den aktuella kuststräckan. Vegetationslinjen mättes in och jämfördes för att få fram storleken på erosionen under åren 1960-2004. Därefter utfördes två fältundersökningar, först en undersökning av strand- och bottenprofilerna, och sedan …
… However, today there is no connection between grazing types and the ground vegetation types used in forestry to access site index. A transformation between the two systems would allow easier planning of land use and cooperation between reindeer husbandry and forestry. This …
… kontroll eller ge direktiv. Skötselåtagandena uppdelas mellan parterna efter vegetationsfaktorer som vegetationsgrovlek och vegetationstyp. De inblandade fann en tillförsikt om en framtid i samverkan. En framtid med gemensam konstruktiv dialog och förhöjd skötselkvalitet som …
