Sökning: "Fraction of Photosynthetically Active Radiation"

Hittade 4 uppsatser innehållade orden Fraction of Photosynthetically Active Radiation.

1. 1. Improvement of the GPP estimations for Sudan using the evaporative fraction as water stress factor

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

   Författare :Maria Angela Dissegna; [2016]
   Nyckelord :semi-arid regions; light use efficiency models; evaporative fraction; gross primary production; Physical Geography and Ecosystem analysis; GEM; Earth and Environmental Sciences;

   Sammanfattning : Estimation of GPP in Sudan using the evaporative fraction as water stress factor The Gross Primary Production "GPP" quantifies the amount of carbon entering an ecosystem. It is an ecosystem service since it is a source of energy for all organisms and it is estimated to reduce atmospheric CO2 in about 123 Pg C per year at the global scale. LÄS MER

3. 2. Land Surface Phenology as an indicator of performance of conservation policies like Natura2000

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

   Författare :Gunjan Sharma; [2016]
   Nyckelord :MODIS NDVI; Natura2000; Land Surface Phenology LSP ; ecological indicators; TIMESAT; trend analysis; GEM; Earth and Environmental Sciences;

   Sammanfattning : Considering the growing pressure on various ecosystems all around the world, the development of ecological indicators for assessing the health and condition of the ecosystems has become an integral part of environmental management and policy making efforts. Such indicators do not only simplify the complex ecosystem processes but can also act as a measure of performance of a conservation policy. LÄS MER

4. 3. Comparison of MODIS-Algorithms for Estimating Gross Primary Production from Satellite Data in semi-arid Africa

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

   Författare :Martin Nilsson; [2013]
   Nyckelord :Leaf Area Index; LAI; Enhanced Vegetation Index; EVI; Normalized Vegetation Index; NDVI; Gross Primary Production; GPP; remote sensing; MODIS; FPAR; Fraction of Photosynthetically Active Radiation; Eddy Covariance; Africa; physical geography; Earth and Environmental Sciences;

   Sammanfattning : The climatic patterns of the world are changing and with them the spatial distribution of global terrestrial carbon; the food and fiber of the world and in itself an important factor in the changing climate. Knowledge of how the terrestrial carbon stock is changing, its distribution and quantity, is important in understanding how the patterns of the world are changing and large scale models using remotely sensed data have emerged for this purpose. LÄS MER

5. 4. Vegetation indices, FAPAR and spatial seasonality analysis of crops in southern Sweden

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

   Författare :Raunaq Jahan; [2010]
   Nyckelord :carbon uptake; WDRVI; FAPAR; MODIS; physical geography; NDVI; geography; TIMESAT; south west Skåne; Earth and Environmental Sciences;

   Sammanfattning : Remote sensing is an extensively used technique in ecosystem monitoring or analyzing the carbon balance on the earth surface. The most dominant part of south west Skåne is agricultural land and MODIS derived Vegetation Indexes (VIs) are able to investigate the seasonality of crop fields. LÄS MER