inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (5314 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Soil map of the Netherlands.
  • A general soil map of the Netherlands based on generalisation of the data obtained from the 1: 50 000 soil map, with a concise description of the map units. (AIS).
  • Jordklassificering Danmark. Basisdatakort = Soil classification of Denmark. Soil maps.
  • Soil map legends as tools of cartographic communication
  • Cartographic symbol ; Cartography ; Concept ; Geographical information system ; Land use ; Methodology ; Soil ; Soil map ; Soil properties
  • This paper reports on one series of experiments to evaluate how varying the symbolization of soils on maps and the concomitant legend design affect the map's readility.
  • A procedure for the statistical characterization of the units of the Belgian soil map
  • Belgium ; Soil ; Soil map ; Soil properties ; Soil science ; Statistics ; Taxonomy
  • A procedure for the statistical characterization of the units of the Belgian soil map, published at a scale of 1:20 000, is described and illustrated. It makes use of the information of 8 962 soil profiles described and sampled during the Belgian
  • variation of some properties of a given soil map unit over different regions.
  • soil survey campaign and can be considered as an alternative for the use of legend class values and the selection of « reference » profiles. The procedure thereby considers horizons as basic information carriers and accounts for evidence on systematic
  • Introduction: soil horizons
  • Soil horizons
  • Congress ; Soil ; Soil classification ; Soil properties ; Soil science ; Taxonomy
  • The A. presents the meeting and its objective: to discuss the various concepts of soil horizons and the role that soil horizons play in soil characterization, classification and mapping. This number of Catena contains selected papers of this meeting.
  • Soil profile analytical database for the European Union
  • Automated mapping ; Data base ; Europe ; Land use ; Methodology ; Soil ; Soil map ; Soil properties
  • This paper describes the methodology used for compilation of a soil profile analytical database connected to the EC or EU Soil Map. This compilation commenced in 1992 following a decade of expert group meetings concerning European soil and land data.
  • Soil association and land suitability maps of the Western Desert, SW Egypt
  • Agricultural land use ; Arid area ; Desert ; Egypt ; Erg ; Irrigation ; Land use ; Oasis ; Salinity ; Satellite imagery ; Soil ; Soil map ; Soil properties
  • Using geological maps and Landsat-MSS images, the investigated area was divided into 7 geomorphological units. Each of these units were subdivided in soil associations, which are presented on a soil association map at a scale 1:1 000 000
  • . On the basis of this soil association map of SW-Egypt, the land suitability map for irrigated agriculture (1:1 000 000) was elaborated. It shows the suitability of land for the dominant soils and for most suitable soils which occur within the soil association
  • . 17 maps units were established according to the framework for land evaluation of the FAO (1976).
  • Land assessment maps of Denmark based on the Danish Soil Classification's data bases and former trial land assessments
  • Agricultural land use ; Denmark ; Irrigation ; Jylland ; Land use ; Methodology ; Soil ; Soil classification ; Soil map ; Soil properties ; Water needs
  • This paper describes a methodology for transformation of the Danish Soil Classification's maps to land assessment maps based on a calculation of the irrigation need on various soil types and based on the land values obtained by the work of the 1949
  • Land Assessment Commission. A detailed description of the 2 soil investigations used for the construction of new land assessment maps is given, and as an example the transformation of the Danish Soil Classification's map to a land assessment map
  • Soil mapping of Bir-Tarfawi region (SW-Egypt) based on digital classification of Landsat-MSS-data
  • Arid area ; Cartography ; Classification ; Egypt ; Irrigated farming ; LANDSAT ; MSS ; Remote sensing ; Soil ; Soil properties ; Thematic mapping
  • According to the composition of the superficial layer, 25 different surface types were determined in the field. These surfaces cover 8 soil units of the FAO World Soil Map Classification, which are found with different phases and in different soil
  • associations. On the basis of the pedological results gained by field work, a soil association map (1:500,000) of the area was prepared by 4 steps. Based on this map of Tarfawi, a land suitability map for irrigated agriculture was prepared. It shows
  • the suitability of land for dominant soils and for best soils which occur within soil associations.
  • A comparison of methods to predict soil surface texture in an alluvial basin
  • Arid area ; California ; Cartography ; Geostatistics ; Methodology ; Soil ; Soil properties ; United States of America
  • Surface soil texture controls many important ecological, hydrological, and geomorphic processes in arid regions and is therefore important from a land-management perspective. This article compares several different predictive soil-mapping techniques
  • with a sparse dataset in order to develop surficial soil texture maps. The results suggest that data collected at the landscape scale can be used as input to predictive soil-mapping techniques to create maps of soil texture at higher fidelity and a fraction
  • Sir Robert Kane's land classification maps. A mid-nineteenth century cartographic initiative
  • Cartography ; Historical geography ; Historical mapping ; Ireland ; Land use ; Nineteenth Century ; Soil classification ; Soil map ; Thematic map
  • This paper reviews the mid-nineteenth century land valuation and soils maps promoted by Sir Robert Kane. Compiled by hand in colour on the printed base of Ordnance Survey county index sheets, these maps represent a pioneer initiative in the detailed
  • mapping of variations in land quality in Ireland, and may claim a significant place in the histories of thematic mapping and agricultural science in Ireland.
  • Combining soil map and soil analysis for improved yield prediction
  • Exploratory study on how the farmer can decide, which of the three alternatives (soil map, soil analysis or their combination) should be used as a basis for predicting the most appropriate agricultural land use or management. It is illustrated
  • Soil map of Denmark according to the FAO-UNESCO legend
  • A soil map of Denmark is presented, according to the FAO legend. 14 soil types are mapped taking advantage of existing information about the biophysical environment. These cover mapping of geology (pre-glacial sub-soil) and morphology of landscapes
  • (quaternary deposits) as well as mapping of landscape bodies f. inst. coastal landscapes of different age or valley landscapes of 5 different types. (Ed.).
  • Development of a soil geographic database from the Soil Map of the European Communities
  • Data ; Data base ; European Community ; Geographical information system ; Land use ; Soil ; Soil map ; Soil properties
  • This paper proposes a conceptual framework for a logical database by making full use of all available documents related to the Soil Map of European Communities (EC) making process, thus reducing the loss of information due to harmonization between
  • EC countries and publishing constraints. In the case of the EC Soil Map, the proposed method has been applied after the map was made. Consequently the database sructure is limited by the available information and cannot fully reflect the understanding
  • of soil organization.
  • Soil map of Denmmark according to the revised FAO legend 1990
  • Cartography ; Clay mineral ; Data base ; Denmark ; Humid environment ; Podsol ; Podsolisation ; Slope gradient ; Soil ; Soil classification ; Soil map ; Soil properties
  • In 1990 FAO published a revised legend to Soil Map of the World (FAO-UNESCO 1990). In order to harmonize the soil maps of Europe, it is necessary to transform the EC soil map using the 1985-nomenclature to the FAO revised legend of 1990. This paper
  • describes the construction of a Danish soil ap at scale 1:1000000 using the FAO 1990 legend.
  • Soil landscape analysis.
  • A study of the soil landscape from a geographical perspective, this volume provides factual and conceptual background information and a description and discussion of laboratory and field methods, including mapping. The soil landscape is the focus
  • with detailed discussion of problems associated with soils maps. Numerous examples, diagrams, maps, and tables, and a glossary and index enhance the text. (DOH).
  • Some factors affecting regional differentiation of the soils in the Republic of Benin (West Africa)
  • Benin ; Ferralsol ; Ferruginous soil ; Pedogenesis ; Soil ; Soil classification ; Soil map ; Soil properties ; Spatial variation ; Tropical zone
  • information content of the published 1:200,000 soil map of Benin. Regional differences in the soil cover are clearly revealed. Soil provinces roughly correspond to the known geomorphologic units of Benin.
  • Soil materials, a layer based approach to soil description and classification
  • Soil horizons
  • Australia ; Cartography ; Concept ; Land use ; New South Wales ; Soil ; Soil classification ; Soil properties
  • The Soil Conservation Service of New South Wales (Australia) is mapping soil landscapes at a scale of 1:100,000 and is using a soil layer based entity, termed soil materials, as the basic entity for soil description and classification. This paper
  • Sampling strategy for quantitative soil mapping
  • Belgium ; Cartography;Mapping ; Flanders ; Methodology ; Soil ; Soil properties ; Soil science
  • A sampling strategy for quantitative soil survey includes two different samplings : (i) a reconnaissance sampling to characterize the variogram required to optimize the sampling scheme for (ii) the actual survey. For the actual survey a sampling
  • spacing of 2 km in a square grid was found to result in an acceptable maximum kriging estimation error of 5,76 %. The proposed sampling strategy would require 408 observations in total. This is 71 % less than the sampling during the National Soil Survey.
  • Belgium ; Data base ; Erodibility ; Rill wash;Runoff ; Soil ; Soil erosion ; Soil property ; Thematic mapping
  • The soil database for Northern Belgium was used to map soil erodibility characteristics in this region. Three methods are compared and evaluated. Three erodibility indices are calculated and mutual differences are outlined. Different cartographic
  • representations are discussed and choropleth maps of the soil characteristics are elaborated. Finally, an overview is given of several regions in Northern Belgium each having different soil erodibility characteristics.