Institut für Bodenkunde und Standortslehre

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    Towards regionalisation of soils in Northern Thailand and consequences for mapping approaches and upscaling procedures
    (2008) Schuler, Ulrich
    The purpose of this study was to identify the key factors of soil formation and distribution in North-western Thailand in order to enable predictive mapping. Further objectives were to investigate different soil mapping approaches, regarding their suitability for specific areas and scales and to assess the potential of local (soil) knowledge for soil mapping and land use planning. In order to cover the essential petrographic inventory of North-western Thailand three different petrographic areas were selected. The investigated topics were petrographic diversity, spatial organisation of soils and variability of their physical and chemical properties, as well as local soil knowledge of farmers in the respective areas. In addition thematic maps were generated comprising geology, WRB soil groups, and different soil properties. Soil mapping was carried out by using four different methods, the intensive mapping approach, maximum likelihood method, randomised grid cell approach, as well as elicitation of local knowledge. The intensive mapping approach comprised transect investigations, investigation points of the randomised grid cell approach, and additional investigation points, which were selected for areas with increased soil and petrographic variability. All maps based on the intensive mapping approach contained the highest sampling point density and maximum amount of information. These maps were used as a reference for the other mapping approaches applied here.
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    TUSEC - Bilingual-Edition

    eine Methode zur Bewertung natürlicher und anthropogener Böden (Deutsche Fassung)

    (2013) Stahr, Karl; Lehmann, Andreas; David, Susanne
    The ‘TUSEC-book’ is a manual for soil evaluation in the temperate zone, comprising English and German versions in one volume. New and innovative are the explicit consideration of anthropogenic soils with the TUSEC evaluation and the differentiation of the evaluation system into two evaluation methods for different levels of detail. Both the part describing the detailed method and the part showing the overview method are again divided into chapters with step-by-step descriptions of methods concerning the evaluation of the widely known soil functions. Every one of these chapters is introduced with principal explanations on the respective soil functions and descriptions of the specificities of the method are provided. Thereby, details on the methodological extensions, which are necessary for the evaluation of anthropogenic soils, are highlighted. Whereas the chapters concerning the detailed evaluation method reflect well-tested procedures, only a beta version is available for the overview method.