ASRIS Technical Specifications V1.6

12 Soil Profile DatabaseAs noted earlier, ASRIS contains the database of descriptors for land units (described in the previoussections) along with separate soil profile database that contains primary data on the site, soil morphology,soil chemistry and soil physical properties from fully characterized sites. These are known to berepresentative of significant areas and environments. The minimum data set is listed in Table 52. Datatransfer for the Representative Soil Profile Database within ASRIS should follow the SITES protocol (Pelusoand McDonald 1995). Further details on the ASRIS soil profile database will be included in the next versionof the SITES document (version 2.0 expected 2012).Table 52: Recommended minimum data set for the ASRIS soil profile databaseAttribute Method Attribute MethodSiteSoil chemical properties (major horizons)Location pH(1:5 CaCl 2 )Type of observation EC 1:5Landform elementOrganic carbonLand useExch. CaMicrorelief typeExch. MgSurface coarse fragmentsExch. KRock outcropExch. NaSurface conditionCECTotal PMorphology (horizon/depth basis)Available PHorizon typeTotal NDepthTotal KBoundary shapeBoundary distinctnessSoil Physical Properties (major horizons)Colour hue, value, chromaBulk densityMottle abundanceParticle sizeCoarse fragment abundance–10 kPa θ vField pH–1.5 MPa θ vTextureSoil shrinkageStructure gradeDispersion classStructure sizeSaturated KStructure typeUnsaturated K (–50mm)Segregation abundanceSegregation typeTaxonomyCarbonate effervescenceASC (to Family level)World Reference Base65