Sökning: "ecosystem flux"

Visar resultat 1 - 5 av 38 uppsatser innehållade orden ecosystem flux.

  1. 1. Analysis of Carbon Dioxide Flux from a Tower Sensor in Abisko Sweden

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Qiaoyin He; [2022]
    Nyckelord :Abisko; carbon dioxide flux; net ecosystem exchange; R-INLA; time series; Mathematics and Statistics;

    Sammanfattning : .... LÄS MER

  3. 2. Tundra carbon cycling in relation to sea-ice decline in a warming Arctic

    Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Juliane Glinski; [2022]
    Nyckelord :sea-ice decline; warming Arctic; earlier growing season; arctic tundra; heterotrophic and autotrophic respiration; climate warming; Earth and Environmental Sciences;

    Sammanfattning : We set out to investigate whether arctic tundra acted as a sink or source of carbon dioxide (CO2) between 1980-2014 and to relate changes in the net carbon balance to Arctic sea-ice decline. We want to understand how climate change and arctic warming influence arctic carbon cycling. LÄS MER

  4. 3. Influence of permafrost disintegration on wetland carbon fluxes in Abisko, Sweden

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Aida Esmailzadeh Davani; [2021]
    Nyckelord :Physical Geography; Ecosystem Analysis; Permafrost; CH4 flux; CO2 flux; Abisko; Wetlands; Earth and Environmental Sciences;

    Sammanfattning : The northern permafrost regions are experiencing a rapid warming as surface temperatures are rising, causing a disintegration of permafrost and a deepening of the active layer (AL). This releases previously frozen carbon, making it available for decomposition by microbes. LÄS MER

  5. 4. Evaluating drought impacts on ecosystem water use efficiency of three different boreal forest sites

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

    Författare :Tim Schacherl; [2021]
    Nyckelord :flux data; carbon uptake; water deficit; Sweden; drought resistance; nitrogen; Eddy covariance;

    Sammanfattning : European boreal forests are the biomes most affected by climate change. For example, extreme weather events such as droughts are expected to become more frequent and severe. Especially in the summer months, droughts can drastically impact the carbon and water exchanges of boreal forests. LÄS MER

  7. 5. Legacy effects of spring temperature anomalies on seasonal productivities in northern ecosystems

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Hanna Marsh; [2021]
    Nyckelord :Physical geography; Ecosystem analysis; Northern ecosystems; Legacy effects; Climate Change; Gross Primary Production; Earth and Environmental Sciences;

    Sammanfattning : Legacy effects of spring temperature anomalies on seasonal productivities in northern ecosystems Direct and lagged effects from spring temperature anomalies for the time-period 2001-2018 have been investigated for northern ecosystems (> 30°N). Three different data sets of Gross Primary Production (GPP) estimates (GOSIF, NIRvGPP and FLUX GPP) have been used in tandem with concurrent climate data to find significant correlations between spring growth and temperature anomalies and subsequent growing seasons. LÄS MER