Sökning: "bvoc"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet bvoc.

  1. 1. Is genetic diversity more important for terpene emissions than latitudinal adaptation? : Using genetically identical trees to better understand emission fluctuations across a European gradient

    Författare :Ylva van Meeningen; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; BVOC; English oak; European beech; Norway spruce; genetic diversity; European gradient;

    Sammanfattning : Biogenic volatile organic compounds (BVOCs) are trace gases other than CO2 and CH4 produced and emitted by the vegetation. The group consists of thousands of compounds in various shapes and sizes and with short atmospheric lifetimes. Some of the most common BVOC groups are called isoprene, monoterpenes and sesquiterpenes. LÄS MER

  3. 2. Secondary Organic Aerosols: Composition, Gas-to-Particle Partitioning and Physical Properties

    Författare :Anna Lutz; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; gas to particle conversion; volatility; secondary organic aerosols; FIGAERO; CIMS; monoterpenes; isoprene; SOA; BVOC;

    Sammanfattning : Atmospheric aerosols influence our climate and air quality. Aerosol particles in the atmosphere are transformed through many different physical and chemical reactions. A substantial fraction of the particles in the atmosphere are of secondary origin, formed as a result of gas to particle conversion. LÄS MER

  4. 3. Stress-induced BVOC emissions from forests in Sweden

    Författare :Erica Jaakkola; BECC: Biodiversity and Ecosystem services in a Changing Climate; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Volatile organic compounds; Plant stress; Forests; Volatile emissions; spruce bark beetle infestations; ozone stress; wildfire recovery; Picea abies Norway spruce ; Betula pubescens ssp. czerepanovii; Pinus sylvestris Scots pine ; sweden;

    Sammanfattning : A changing climate is expected to lead to more extreme weather events, such as an increased frequency of droughts and forest fires. Changing forest conditions can offer benefits to species such as insects, including bark borers that thrive in warm conditions. LÄS MER

  5. 4. The variability in Salix BVOC emissions and possible consequences for managed SRC plantations

    Författare :Tomas Karlsson; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Salix; BVOCs; varieties; age; branch chamber; leaf chambe; GC-MS; aerosols; Salix; BVOCs; varieties; age; branch chamber; leaf chamber; GC-MS; aerosols;

    Sammanfattning : Willow (Salix spp.) trees have been used commercially since the 1980s to produce renewable energy. Some benefits with these trees are that they can clean soil from heavy metals, reduce the risk of nutrient leakage and eutrophication. LÄS MER

  7. 5. Characteristics of BVOC emissions from a Swedish boreal forest : Using chambers to capture biogenic volatile organic compounds (BVOCs) from trees and forest floor

    Författare :Min Wang; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; BVOCs; boral forest; Norway spruce; forest floor; branch chamber; soil chamber;

    Sammanfattning : Plant-emitted biogenic volatile organic compounds (BVOCs) are a large group of hydrocarbons released by plant leaves, bark, flowers and fruits into the atmosphere and from plant roots into the soil. BVOCs have important physiological and ecological functions, such as mediating within-plant and plant-plant communication, defense against herbivores attack, protection against heat or other oxidative stress, attracting pollinators etc. LÄS MER