The hydrogeological spatial structure provides a delimitation of areas with very similar hydrogeological characteristics. These areas, with increasing detail, include large hydrogeological regions, hydrogeological regions and hydrogeological subregions. Each higher level is completely made up of one or more units of the next lower level. In order to compile a digital map of large hydrogeological regions, hydrogeological regions and subregions of Germany, existing regional maps and drafts of the State Geological Surveys have been harmonised and brought together. All in all, the territory of Germany has been subdivided in 10 large hydrogeological regions, in 36 hydrogeological regions and 247 hydrogeological subregions.
The Potential Soil Erosion Risk map gives an overview of the exposure of arable soils to soil loss due to surface runoff and splash erosion in Germany. It is based on pedological, relief and climatic factors. The map was created by using the long-term model USLE (Universal Soil Loss Equation). The method is published in the DIN 19708:2005-02 and in the documentation of Ad-hoc-AG Boden (representing the soil experts of the geological services of the German federal states). For the application with soil maps, the method was adapted by the Federal Institute for Geosciences and Natural Resources (BGR).The landuse stratified soil map of Germany at scale 1:1,000,000 was used as pedological input to the model. The relief data was derived from the DEM50 of the BKG. The mean annual precipitation data of the period 1961-1990 (DWD) is used to model the erosivity of rainfall. The land use information is derived from CORINE land cover data set (2006).
The 1:5 Million International Geological Map of Europe and Adjacent Areas shows the pre-Quarternary geology of Europe onshore and offshore. In addition to the geology attributed by age, petrography and genesis, also magnetic anomalies, tectonic structures, metamorphism and – in the offshore areas – information about the continental/oceanic crust and the continental margin, are shown. The map was developed by BGR under the umbrella of the Commission of the Geological Map of the World (CGMW) and in cooperation with geological surveys organisations of 48 countries and more than 20 research institutes. For detailed information about the 'IGME 5000: More than just a map – A multinational GIS Project' please visit the IGME website.
Web Map Service (WMS) of BUEK200 series. The soil map 1:200,000 (BUEK200) is prepared by the Federal Institute for Geosciences and Natural Resources (BGR) in cooperation with the National Geological Surveys (SGD) of the federal states in the sheet line system of the Topographic Map 1:200,000 (TUEK200) and is published in 55 individual map sheets. The digital data management provides a detailed, nationwide uniform and comprehensive information base for statements on land use and soil protection across the states. The soil inventories and their spatial distribution on the territory of each map sheet is currently described in terms of legend units structured by soil regions and landscapes. Each legend unit contains soil systematic information as well as information about the soil parent material of each dominant and associated soil.
The map of the plant available water in Germany gives an overview of the amount of water which is available for plant growth in the summer period (April – September). It is the sum of the available water holding capacity of soils the precipitation in summer and the amount of capillary rise. The map was made on the basis of the land use stratified soil map of Germany at a scale of 1:1,1000,000, climate data for the period of 1961–1990 and land use information is derived from the Corine Land Cover data set (2006). The method is part of the TUB_BGR approach to model seepage water and is published in the documentation of Ad-hoc-AG Boden (representing the soil experts of the geological services of the German federal states).
The General Geological Map of the Federal Republic of Germany 1:250,000 (GÜK250) is a seamless “Inselkarte” and the digital follower of the General Geological Map of the Federal Republic of Germany 1:200,000 (GÜK200). Like its predecessor, the GÜK250 represents the surface geology of Germany and contains harmonised and updated information on age, composition and genesis of the rocks. According to this content, the GÜK250 offers three nationwide legends for the portrayal of the geologic units: a) chronostratigraphy, b) petrography and c) petrogenesis. Furthermore, the new GÜK250 includes information on the lithostratigraphy, the genetic process as well as information on the physical and chemical environment of the rock formation. Additionally, the GÜK250 provides - if available - information on the thickness of the geologic units and contains layers which represent tectonic elements, marginal position of the ice shield and quartz dykes. In general, the term “surface geology” refers to geologic formations up to a depth of two meters. However, particularly in the south of Germany, considerable deviations of this concept exist and thicknesses of a couple of hundred meters may are displayed. The GÜK250 contains a base layer and an overlay layer which usually comprises thin Quaternary deposits.
The Web Map Service (WMS) shows the distribution of typical soil types (soil texture) in the topsoils of Germany. Typical is used in the term of areally dominating. The map visualizes the results of the project that are documented in a BGR report (Bodenarten der Böden Deutschlands; BGR Archiv, Nr. 0127305). The soil texture data from the analysis of the particle size distribution for 16,132 sites in Germany were classified after the legend units of land use-stratified soil map of Germany 1: 1,000,000 (BÜK1000N V2.3) and mean soil texture were calculated. Considering the large heterogeneity in the data and the resulting uncertaintly in the precision for a site the depiction of the obtained soil texture is presented at the level of the soil types group, according to the German soil classification system (KA5).
Web Map Service (WMS) of the BUEK2000. The BUEK2000 Version 1.0 was compiled from the BÜK1000 map by a process of generalization. The number of soil mapping units in the legend was reduced from 72 to 60 by aggregation of those units showing similar dominamt soils into single units. The map combined with selected soil profile pictures/graphics and information about soil history, soil classification and soil mapping in Germany is one fundamental part of the Hydrological Atlas of Germany (HAD). The Version 2.0, based on the BUEK2000N, Version 2.3, was cartographically adapted to a new base map.
The Geological Map of Germany 1:1,000,000 (GK1000) represents the geology of Germany and adjacent areas. The Quaternary units of Northern Germany and the Alpine foreland are described by their genesis.The older sedimentary rocks are classified by age (stratigraphy); igneous and metamorphic rocks are classified by their composition (lithology).
The map of the effective rooting depth gives an overview of the rooting capacity of German soils. The effective rooting depth is the size of the soil reservoir that the plant can reach to get water in years of drought. The effective rooting depth is determined by both crop and soil properties. The rooting depth is derived from profile data of the landuse stratified soil map of Germany at scale 1:1,000,000. The method is taken from Bodenkundliche Kartieranleitung KA4 (1994) and is documented in the Methoden-WIKI of the FISBo BGR. The land use information is derived from the CORINE Land Cover data set (2006).
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