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Chapter 4 The Soil Geographical DataBase of Eurasia at scale 1:1,000,000: history and perspective in Digital Soil Mapping

Abstract : In this Chapter, we describe the steps followed to build and improve the Soil Geographical Database of Eurasia at scale 1:1,000,000 and suggest automatic soil mapping techniques to improve it. The work started in 1952 with the compilation of materials provided by the contributing countries to publish the Soil Map of the European Communities at scale 1:1,000,000 in 1985. From then on, it was computerised, geo-referenced, structured to form a geographic database, enriched using archives of the original materials, extended geographically and thematically, harmonised over country borders, updated and documented. Despite this streamline of development and enhancements, it has limitations inherent to the initial objective of publishing a paper map and to the wide variety of views on soil mapping that were brought together from the community of contributors. The next logical step would thus be to improve the Soil Database by using existing detailed soil information and newly European-wide available satellite data and digital elevation models (DEMs). Existing soil maps at larger scale available in some parts of Europe could be used as training references to assess the morphometric (relief) and spectral characteristics of the Soil Mapping Units (SMUs) from DEM and satellite images, and the results extrapolated beyond to the surrounding areas and compared with the present delineation included in the 1:1,000,000 Soil Database. The Limousin Region of France was chosen as a test area but other geomorphologically diverse and representative areas in Europe should be included as well. This work is in progress but more partners will be needed in a collaborative project effort to establish a multi-scale European Soil Information System.
Keywords : GEOGRAPHIE dsm
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Joël Daroussin, Dominique King, Christine Le Bas, Borut Vrscaj, Endre Dobos, et al.. Chapter 4 The Soil Geographical DataBase of Eurasia at scale 1:1,000,000: history and perspective in Digital Soil Mapping. Digital Soil Mapping — An Introductory Perspective, 31, Elsevier, pp.600, 2006, Developments in Soil Science, 978-0-444-52958-9. ⟨10.1016/S0166-2481(06)31004-5⟩. ⟨hal-02819912⟩

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