Search for dissertations about: "soil mapping"

Showing result 1 - 5 of 22 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. 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; Spatially distributed hydrological modelling; Precision Agriculture; 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

  3. 3. 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

  4. 4. 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 : Popular Abstract in English European dry extensive grasslands are biodiversity hotspots which are severely threatened by land use intensification and abandonment. In order to plan efficient conservation actions it is necessary to collect information on the current status of grasslands, their species diversity and prevailing environmental conditions. READ MORE

  5. 5. Selection during Early Life Stages and Local Adaptation in Arabidopsis thaliana

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Froukje M. Postma; Uppsala universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Dormancy cycling; Germination timing; Maternal effects; Natural variation; QTL mapping; Seed bank; Seed dormancy; Structural Equation Modeling; Biology with specialization in Ecological Botany; Biologi med inriktning mot ekologisk botanik;

    Abstract : Organisms are often adapted to their local environment, but the role of early life stages in adaptive differentiation among populations remains poorly known. The aim of my thesis was to investigate the contribution of early life stages to the magnitude and genetic basis of local adaptation, and to identify the underlying adaptive traits. READ MORE