Sökning: "mixed forest"

Visar resultat 1 - 5 av 238 uppsatser innehållade orden mixed forest.

  1. 1. Can precommercial thinning be used to create more diversity after planting spruce?

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Astrid Bygge; [2024]
    Nyckelord :Forestry; pre-commercial; stand structure; heterogeneity; silviculture; mixed forests; monoculture; Picea abies; Betula spp.;

    Sammanfattning : Mixed forests will harbour other ecosystem services than a planted coniferous monoculture. This study used early results from a long-term experiment to examine if different precommercial thinning treatments can be used to increase diversity in planted stands of Norway spruce (Picea abies) mixed with high densities of natural regeneration of birch (Betula spp. LÄS MER

  3. 2. END-OF-LIFE FOR A QUARRY, WHAT IS THE ENVIRONMENTAL IMPACT?

    Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Författare :Kimia Golamian Yosaf Abadi; [2023-06-21]
    Nyckelord :Quarrying; Aggregates; Life cycle; Environmental impact; Restoration; Permit;

    Sammanfattning : Aggregates products are the largest non-energy mining industry in the world, which is the most extracted materials after water. The most prevalent source of aggregates is from quarries, or mines that target the rock itself. LÄS MER

  4. 3. Thermal Conversion of Cellulose-Lignin Precursors into Carbon Fibres

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Nanoteknologi och funktionella material

    Författare :Sofia Westberg; [2023]
    Nyckelord :Carbon fiber; lignin; cellulose; continuous conversion;

    Sammanfattning : Carbon fibres are used in many applications thanks to their exceptional tensile properties in relation to their relatively low weight. These thin strands of at least 90% carbon are mixed with a matrix such as epoxy to form composites used for cars, wind turbines, prosthetics, and many other things. LÄS MER

  5. 4. Effectiveness of the Costa Rican Payments for Ecosystem Services program in mitigation of greenhouse gas emissions: Trends in carbon stocks 2012-2020

    Master-uppsats, Lunds universitet/Internationella miljöinstitutet

    Författare :Noelia Solano Guindon; [2023]
    Nyckelord :Payments for ecosystem services; ecosystem services; carbon stocks; greenhouse gas emissions; mitigation; Earth and Environmental Sciences;

    Sammanfattning : Payments for ecosystem services (PES), a mechanism of incentives or compensation to landowners for provision of ecosystem services, have grown as a tool for meeting conservation goals. The Costa Rican payments for ecosystem services (PSA) program is one of the best-known examples because of being one of the most established. LÄS MER

  7. 5. Analys av föda för vitryggig hackspett och rödlistade vedlevande skalbaggar : utvärdering av tre olika behandlingar

    Kandidat-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Emma Mattsson; Lena Ostermann; [2023]
    Nyckelord :Vitryggig hackspett; vedlevande skalbaggar; paraplyart; rödlista; biologisk mångfald; död ved; restaurering;

    Sammanfattning : Den vitryggiga hackspetten har sedan 1950-talet blivit en sällsynt art i det svenska landskapet. Nedgången beror främst på det moderna skogsbruket där barrskog till stor del har ersatt blandbestånd och gammal lövskog. LÄS MER