Search for dissertations about: "soil mapping"

Showing result 1 - 5 of 23 swedish dissertations containing the words soil mapping.

  1. 1. High-resolution mapping and spatial variability of soil organic carbon storage in permafrost environments

    University dissertation from Stockholm : Department of Physical Geography, Stockholm University

    Author : Matthias Benjamin Siewert; Stockholms universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; carbon; soil organic carbon; permafrost; soil; land cover classification; digital soil mapping; machine-learning; ecosystem; mapping; landscape studies; Siberia; Arctic; naturgeografi; Physical Geography;

    Abstract : Large amounts of carbon are stored in soils of the northern circumpolar permafrost region. High-resolution mapping of this soil organic carbon (SOC) is important to better understand and predict local to global scale carbon dynamics. READ MORE

  2. 2. Improved farm soil mapping using near infrared reflection spectroscopy

    University dissertation from Stockholm : Department of Physical Geography, Stockholm University

    Author : Johanna Wetterlind; Sveriges lantbruksuniversitet.; [2009]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Information on soil texture, soil organic matter content (SOM), nutrient status and pH is fundamental for efficient crop production and for minimising negative effects on the environment. Farmers obtain this information, on which decisions on fertiliser and lime requirements are based, through farm soil mapping. READ MORE

  3. 3. Hydrological Modelling, Topographical Influence and Yield Mapping in Precision Agriculture

    University dissertation from Andreas Persson, GIS Centre, Lund University, Sölvegatan 12, 223 62, Lund, Sweden

    Author : Andreas Persson; Lunds universitet.; Lund University.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Precision Agriculture; Spatially distributed hydrological modelling; Yield mapping; Topographical wetness index; Drainage area; Lantbrukshydrologi; marklära; agricultural hydrology; Soil Science;

    Abstract : The use of topographical data in hydrological and agricultural applications has increased with GPS data availability and the concept of precision agriculture. This thesis investigates the relationships between topography and in one case simulated soil moisture and in the other case yield. READ MORE

  4. 4. High-­resolution mapping of soil organic carbon storage and soil properties in Siberian periglacial terrain

    University dissertation from Stockholm : Stockholm University

    Author : Matthias Siewert; Stockholms universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Soil organic carbon; Siberia; remote sensing; ecosystems; naturgeografi; Physical Geography;

    Abstract : In the past years considerable attention has been given to soil organic carbon (SOC) stored in permafrost-affected soils in periglacial terrain. Studies have shown that these soils store around half the global SOC pool, making them a key component of the global carbon cycle. READ MORE

  5. 5. Hyperspectral and multispectral remote sensing for mapping grassland vegetation

    University dissertation from Department of Physical Geography and Ecosystem Science, Lund University

    Author : Thomas Möckel; Lunds universitet.; Lund University.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Plant diversity Partial least squares Ellenberg indicators Vegetation index Heterogeneity;

    Abstract : As a consequence of agricultural intensification, large areas of species-rich grasslands have been lost and farmland biodiversity has declined. Previous studies have shown that the continuity of grazing management can have a significant influence on the environmental conditions and the levels of plant species diversity in grassland habitats. READ MORE