Surface Soil Acidity (ASRIS)

Soils are classified according to the pH of the surface layer, according to the lower pH values recorded among similar soils, i.e. it is assumed that each soil class has a characteristic level of acidity, or is prone to that level of acidity under current climate and typical agricultural land use expected for that soil and locality. Surface soils are classified according to degree of acidity, and surface buffering capacity. This analysis is based on Soil Landscape Mapping of SA's agricultural districts using soil class information in the nationally-consistent Australian Soil Resource Information System (ASRIS) data format. Also available for download: [Soil Acidity](http://data.sa.gov.au/data/dataset/acidity).

本数据集的土壤分类依据表层土壤的酸碱度（pH）及同类土壤中记录的较低pH值开展，即假定每一类土壤均具备特征酸度水平，或在当前气候条件、该土壤及对应区域的典型农业土地利用模式下，倾向于维持该酸度水平。表层土壤的分类依据为酸度程度与表层缓冲容量。本分析基于针对南澳大利亚州（SA）农业区的土壤景观制图工作，该制图采用了符合全国统一标准的澳大利亚土壤资源信息系统（Australian Soil Resource Information System, ASRIS）数据格式中的土壤类别信息。此外，土壤酸度（Soil Acidity）数据集可通过以下链接下载：http://data.sa.gov.au/data/dataset/acidity。