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Query: text : Soil text : Collections AND ( datasource :( rgd ) )

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ISRIC-WISE Global Soil Profile Data Set (Version 1.1) 01/01/1950 - 01/31/2002
Datasource: Regional and Global Data
Project: n/a
The ISRIC-WISE Global Soil Profile Data Set (Version 1.1) is a homogenized primary soil data set holding 4382 geo-referenced soil profiles originating from 123 countries. All profiles are classified in the original Legend (1974) and Revised Legend (1988) of FAO-Unesco. The data set further includes information on site data, soil chemical and physical data on 21,677 horizons, the source of data, and the methods used for determining analytical data. The digital data set is in Access format. The objective of the ISRIC-WISE Version 1.1 data set is to provide a homogenized set of primary soil data...
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ISRIC-WISE Revised Soil Parameter Estimates for Soil Types of the World (V 2.1) 01/01/1950 - 07/30/2002
Datasource: Regional and Global Data
Project: n/a
This data set presents revised statistics for 28 physical and chemical properties for each soil unit considered in the FAO-UNESCO 1974 Legend and 1988 Revised Legend. These attributes have been identified as being useful for Agro-Ecological Zones (AEZ) methodology studies, crop growth simulation, and analyses of global environmental change. The data set is based on the analysis of over 9600 globally distributed soil profiles, held in the World Inventory of Soil Emission Potentials (WISE) version 2.0, a homogenized set of primary soil data. The underlying data set uses all profiles held in WISE...
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Global Map of Easily Available Soil Moisture 01/01/1961 - 11/22/2009
Datasource: Regional and Global Data
Project: n/a
This data set is a grid with estimated easily available soil moisture in mm/m with a spatial resolution of 5 * 5 arc minutes. Information with regard to easily available soil moisture was calculated from the Derived Soil Properties of the Digital Soil Map of the World which contains raster information on soil moisture in different classes. For the purpose of water balance model calculations, an average easily available soil moisture storage capacity was computed and assigned to each class....
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Global Map of Maximum Available Soil Moisture 01/01/1961 - 11/22/2009
Datasource: Regional and Global Data
Project: n/a
This data set is a grid with estimated maximum available soil moisture in mm/m with a spatial resolution of 5 * 5 arc minutes. Information with regard to maximum available soil moisture was calculated from the Derived Soil Properties of the Digital Soil Map of the World which contains raster information on soil moisture in different classes. For the purpose of water balance model calculations, an average maximum available soil moisture storage capacity was computed and assigned to each class....
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CONUS-SOIL Multi-layer Soil Characteristics Data Set 01/01/1998 - 11/22/2009
Datasource: Regional and Global Data
Project: n/a
CONUS-SOIL is a multi-layer soil characteristics data set for the conterminous United States. It was developed by researchers at the Earth System Science Center(ESSC) in the College of Earth and Mineral Sciences at The Pennsylvania State University. The data set was derived from the State Soil Geographic Data Base (STATSGO) (additional information on STATSGO may be found at the following URL: http://www.ftw.nrcs.usda.gov/stat_data.html). CONUS-SOIL has been specifically designed for regional and continental-scale climate, hydrology, and ecosystem modeling and has been made available in a forma...
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Digital Soil Map of the World and Derived Soil Properties 01/01/1961 - 11/30/1995
Datasource: Regional and Global Data
Project: n/a
The Digital Soil Map of the World and Derived Soil Properties CD-ROM (Version 3.5, November 1995) is based on the FAO/UNESCO Soil Map of the World, original scale 1:5 million. The CD-ROM contains two types of files, Digital Soil Map of the World (DSMW) map sheets and derived soil properties files with images derived from the Soil Map of the World. The Digital Soil Map of the World consists of ten map sheets: Africa, North America, Central America, Europe, Central and Northeast Asia, Far East, Southeast Asia, and Oceania. The maps are available in three different formats: one vector format (A...
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ISRIC-WISE Global Data Set of Derived Soil Properties on a 0.5 x 0.5 Degree Grid (Version 3.0) 01/01/1950 - 12/31/2005
Datasource: Regional and Global Data
Project: n/a
This data set was derived from version 2.0 of the WISE database, holding some 9600 soil profiles, linked to a 0.5 by 0.5 degree raster version of the FAO Soil Map of the World It includes: (1) soil parameter estimates for the component soil units of each terrestrial grid cell, in un-binned format, and (23) soil parameter estimates aggregated or binned into a number of predefined classes. Parameter estimates are presented for the topsoil (0-30 cm) and the subsoil (30-100 cm) for: content of organic carbon, total nitrogen, the C/N ratio, pH(H2O), CECsoil, CECclay, base saturation, total exc...
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Soil Water Limits Database 01/01/1981 - 06/22/1982
Datasource: Regional and Global Data
Project: n/a
Accurate evaluation of the soil water reserves available for plant use is vital in developing optimum water management for crop production in marginally dry regions. Laboratory estimates of the upper and lower limits of soil water availability used to calculate the soil water reservoir often deviate significantly from the limits measured in the field. To make a unified and broad assessment of the accuracy of laboratory measurements for estimating field soil water, investigators obtained and evaluated a comprehensive database of field-measured upper and lower limits of the soil water reservoir ...
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Estimated Available Water Content from the FAO Soil Map of the World, Global Soil Profile Databases, and Pedo-transfer Functions 01/01/1990 - 11/22/2009
Datasource: Regional and Global Data
Project: global ecosystems database
Spatial soil water-holding capacities were estimated for the Food and Agriculture Organization (FAO)digital Soil Map of the World (SMW) by employing continuous pedo-transfer functions (PTF) within global pedon databases and linking these results to the SMW. The procedure first estimated representative soil properties for the FAO soil units by statistical analyses and taxo-transfer depth algorithms (FAO, 1996). The representative soil properties are estimated for two-layers of depths (0-30 and 30-100 cm) and include: particle-size distribution; dominant soil texture; organic carbon content; coa...
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National Soil Characterization Database 01/01/1960 - 11/22/2009
Datasource: Regional and Global Data
Project: n/a
The National Soil Characterization Database of the Soil Survey Laboratory (SSL), National Soil Survey Center (NSSC), contains the results of chemical, physical, and mineralogical analyses for national and international soil samples. The database currently contains analytical data for more than 20,000 pedons of U.S. soils and about 1,100 pedons from other countries. Standard morphological pedon descriptions are available for about 15,000 of these pedons. The primary soil characterization data include, among other information: particle-size distribution; organic carbon; total nitrogen; extrac...
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