Essays about: "Vegetation Indices"

Showing result 31 - 35 of 65 essays containing the words Vegetation Indices.

  1. 31. Can the introduction of the topographic indices in LPJ-GUESS improve the spatial representation of environmental variables?

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Alejandra Narváez Vallejo; [2016]
    Keywords : smooth topography; drainage area; slope; topographic wetness index; LPJ-GUESS; GIS; physical geography and ecosystem analysis; geography; geographic information systems; leaf area index; spatial patterns; MODIS LAI.; Earth and Environmental Sciences;

    Abstract : Ecosystem modelling is an always evolving science trying to catch the complexity of the nature and its principles to model environmental responses in a realistic way. Over and over, models try to introduce more variables and interactions to achieve better representations of phenomena of interest like the responses of the ecosystem to a fast changing world (climate change, land use change). READ MORE

  3. 32. Analysis of Arctic peak-season carbon flux estimations based on four MODIS vegetation products

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Antonin Kusbach; [2016]
    Keywords : satellite-derived data; vegetation indices; Arctic; net ecosystem exchange; big data analysis; Physical Geography and Ecosystem Science; Earth and Environmental Sciences;

    Abstract : Increased temperatures in high latitudes may alter the carbon dynamics throughout the Arctic. Modelled CO2 simulations show that current climate conditions constitute the Arctic a net carbon sink, though the large extent and fine landscape heterogeneity raise an uncertainty about the carbon sink/source status of the region. READ MORE

  4. 33. Comparison of forest fire severity classification models based on aerial images and Landsat 8 OLI/TIRS images of a forest fire area in central Sweden

    University essay from SLU/Dept. of Forest Resource Management

    Author : Adrian Straker; [2016]
    Keywords : forest fire; fire severity; stereo photogrammetry; digital surface model; aerial images; NDVI; NBR; Image Matching; Västmanland;

    Abstract : Due to different level of fire severity a diverse mosaic of vegetation pattern establishes after the occurrence of a forest fire. In order to study the effects of forest fires and to plan future remediation of the burned area remote assessment of forest fire severity has shown to be a valuable tool. READ MORE

  5. 34. Restoring biodiversity in degraded secondary rain forest in Sabah, Malaysia : natural regeneration of trees after restoration treatments

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Sara Waern; [2015]
    Keywords : skogsbrand; selektiv avverkning; Dipterocarpaceae; assisterad naturlig föryngring ANR ; forest fire; selective logging; Dipterocarpaceae; assisted natural regeneration ANR ;

    Abstract : Many tropical rain forests has been lost or degraded as a result of human activities and environmental factors. Since the level of biodiversity is high in the tropics, maintaining these areas is of great importance. Forests like these are often assumed to benefit from forest restoration and rehabilitation. READ MORE

  6. 35. Forestry Carbon Sequestration and Trading: a Case study of Mau Forest Complex in Kenya

    University essay from Högskolan i Gävle/Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

    Author : Kevine Okoth Otieno; [2015]
    Keywords : carbon; indices; NDVI; change detection; biomass; remote sensing;

    Abstract : The global temperature is at an all-time high, the polar ice is melting, the sea levels are rising and the associated disasters are a time bomb. These variations in temperature are thought to trace roots to anthropogenic sources. READ MORE