Avancerad sökning

Visar resultat 1 - 5 av 9 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Att skydda det skyddade : korttidseffekter av hägn på trädföryngring i tre skånska skogsreservat

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Per Olof Johansson; [2020]
    Nyckelord :Ask; bokskog; vilthägn; naturlig föryngring; viltbetning; Ash; beech forest; exclosure experiment; natural regeneration; ungulate browsing;

    Sammanfattning : Biotiska och abiotiska faktorer har stor inverkan på vilka arter som växer i skogen. Graden av inverkan kan bero på betesskador från klövvilt och tillgång på ljus. Betesskador och ljustillgång kan dels reglera nivån på föryngringen, dels på fördelningen av trädslag i den tempererade skogen. LÄS MER

  3. 2. Skogsskötselåtgärders påverkan på risväxter i Sverige

    Kandidat-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Maria Michold; Jessica Åström; [2018]
    Nyckelord :gallring; slutavverkning; fältskikt; riksskogstaxeringen; boreal skog;

    Sammanfattning : Brukandet av skogen har länge påverkat landskapet i riktning mot tätare och yngre skogar med minskad artdiversitet. Många risväxter har viktiga funktioner i ekosystemet som t.ex. födokällor, men har också ekonomiska och rekreationsmässiga värden. LÄS MER

  4. 3. Planning for Viable Forests with High Biodiversity

    Kandidat-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Anja Herdesang; [2018]
    Nyckelord :Anja Herdesang; Planning for Viable Forests with High Biodiversity; forestry; foresters; forester; biodiversity; ecosystem; forest; sustainability; extinction; speices; refinement; nature; clear-cut; cuts; monocultured; forests; alternative; concervation; enviromental laws; even-aged; continuous; silvicultural; wood products; cost-effectiveness; Protection; timber; pulp; production; forest owners; harvesting; red-listed; violations; protected; effective management; ecosystem responses; disturbance; Cross-disciplinary cooperation; climax and carrying capacity; index; describing the abiotic basic Prerequisites for Biodiversity APB ; guideline; trees connected; wildlife connectivity; continuity; Earth and Environmental Sciences; Agriculture and Food Sciences; Biology and Life Sciences; Cultural Sciences; Law and Political Science;

    Sammanfattning : In recent decades, the rate of extinction of species is increasing due to human use and refinement of nature. This has resulted in a large amount of research throughout the world. Forestry today is mostly based on clear cuts, and many natural forests have been cut down and replaced with monocultured forests. LÄS MER

  5. 4. Biophysical changes following landscape restoration : in Changting model restoration site in Fujian province, southern China

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Martin Ewertson; [2016]
    Nyckelord :afforestation; biomass carbon pools; carbon and nitrogen in soil; broadleaves enrichment; eroded red soil;

    Sammanfattning : China has promised to tackle climate change by decreasing its emission and promote carbon sinks primarily by forest plantations and restorations. There is a growing debate about the impacts of large-scale restorations using few fast-growing species on the kind of ecosystem we are creating and its adaptation to the future environmental conditions. LÄS MER

  7. 5. The effects of Gotland pony grazing on forest composition and structure in Lojsta hed, south eastern Sweden

    Kandidat-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Emma Andersson; [2013]
    Nyckelord :horse grazing; ground cover; height structure; Gotland; Lojsta hed;

    Sammanfattning : Livestock animals affect their environment in a number of different ways, mostly through grazing and trampling. This study focused on the effects of Gotland pony grazing on forest structure and diversity, and the impact on ground cover. LÄS MER