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The soil fundamental data layers (FDLs) contain spatial information for 16 key attributes, each of which is measurable (i.e. is given a numeric value rather than being assigned to a descriptive class or category) and is recorded in appropriate units of measure. Since attributes have measurable values, FDLs are particularly useful in computer modelling and have enabled researchers and resource management decision-makers to make the most of rapid developments in GIS technology. Key soil attributes were selected through a consultation process with stakeholders, and generally fall into three groups: soil fertility/toxicity, soil physical properties (particularly those related to soil moisture), and topography/climate (T). Parameters include slope, potential rooting depth, topsoil gravel content, proportion of rock outcrop, pH, salinity, cation exchange capacity, total carbon, phosphorus retention, flood interval, soil temperature, total profile available water, profile readily available water, drainage, and macropores (shallow and deep).
Regional soil databases were the key to generating FDLs. New Zealand was subdivided into several geographic regions and soil scientists were allocated a region for which they developed a ‘regional legend’, i.e. database. Regional data were correlated using the New Zealand Soil Classification (NZSC), referenced to the National Soils Database (NSD) and other relevant data sources, and then linked to the soil polygons in the New Zealand Land Resource Inventory (NZLRI). This layer holds the NZSC data upon which the remaining FSLs were based.
|1.||LRIS Data Dictionary - v3||994 KB||doc||
|2.||NZ Soil Classification ArcGIS layer file||37.9 KB||lyr||
|Category||Environment > Lithosphere > Pedosphere > Soil > Soil type|
|Metadata||ISO 19115/19139, Dublin Core|
|Data type||Vector polygon||Feature count||107298|
|Attributes||nzsc_class, nzsc_group, nzsc_order, SHAPE_fid|
|Services||Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed|
|Added||26 May 2010|
|Revisions||4 - Browse all revisions|
|Current revision||Imported on May 26, 2010 from Shapefile in NZGD2000 / New Zealand Transverse Mercator 2000. 102 geometries modified to be OGC compliant. Changelog.|
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