Sökning: "photosynthetically available radiation"

Hittade 5 uppsatser innehållade orden photosynthetically available radiation.

1. 1. Modelling the growth of Pinus sylvestris L. monocultures in Sweden depending on the absorbed light

   Master-uppsats, SLU/Southern Swedish Forest Research Centre

   Författare :Mateusz Grzeszkiewicz; [2022]
   Nyckelord :climate change; forest modelling; light use efficiency; photosynthetically active radiation; Scots pine;

   Sammanfattning : Stand growth models are an important aid in contemporary sustainable forest management as a major planning and decision-making tool. However, climate change influencing growth conditions worldwide is a challenge to commonly used empirical models as they do not provide enough flexibility, which can result in inaccurate predictions and thus wrong decisions and sub-optimal results. LÄS MER

3. 2. Estimating Light Interception of Orchard Trees Using LiDAR and Solar Models

   Master-uppsats, Linköpings universitet/Reglerteknik

   Författare :Örn Samuel; [2016]
   Nyckelord :agriculture; lidar; light interception; fruit; orchard; trees;

   Sammanfattning : In farming of fruit trees it is of interest to know the light interception of the trees. Therefore, in this project, a geometric model of the trees was derived using LiDAR data and this was combined with a sky model to estimate the light interceptionof orchard trees. LÄS MER

4. 3. Fishing from space : mackerel fishing in Icelandic waters and correlation with satellite variables

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

   Författare :Kristin Agustsdottir; [2013]
   Nyckelord :chlorophyll; downwelling diffuse attenuation coefficient; photosynthetically available radiation; water leaving radiance; physical geography and ecosystem analysis; sea surface temperature; Atlantic Mackerel; Scomber scombrus; Icelandic waters; satellite variables; remote sensing; Earth and Environmental Sciences;

   Sammanfattning : As concentrations of measured CO2 in the atmosphere reach a record high it is important to attempt all possible efforts to reduce the emissions of greenhouse gases (GHG) in all aspects of industry. The fishing sector contributes 15% of total GHG emission in Iceland, with the majority originating from fishing vessels using fossil fuel. LÄS MER

5. 4. Diurnal variation in methane flux in a low-arctic fen in Southwest Greenland

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

   Författare :Bjarne Munk Lyshede; [2012]
   Nyckelord :geography; physical geography and ecosystem analysis; diurnal; methane; wetland; Arctic; Greenland; Earth and Environmental Sciences;

   Sammanfattning : Popular science: A Day in the Life of a Methane Bog Methane gas is continuously released from wetlands around the world. In Kobbefjord, Greenland the release of methane is low during the cold of winter and higher in warm summer months. But the amount released also varies from day to night; a pattern that has to do with both temperature and light. LÄS MER

7. 5. Subarctic peatlands in a changing climate : greenhouse gas response to experimentally increased snow cover

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

   Författare :Herbert Mbufong Njuabe ; [2011]
   Nyckelord :greenhouse gases; subarctic peatlands; geography; physical geography; climate change; Earth and Environmental Sciences;

   Sammanfattning : The rate of change of our climate has been amplified since the industrial revolution and is expected to change even further by the end of this century. Global temperature and precipitation are expected to increase considerably over the next century. These increases are expected to be magnified in the Arctic regions. LÄS MER