Physical condition of soil provides an integrated view of various physical impediments to plant growth associated with surface soils, subsoils and other limitations (e.g. waterlogging, salinity, rockiness or steepness). Mapping shows the most limiting soil physical condition (provided it occupies at least 30% of a map unit), while detailed proportion data are supplied for calculating respective areas of each physical condition of soil class (spatial data statistics).

Physical condition of surface soil mapping highlights areas where plant growth may be impeded due to poor surface soil structure, predominantly due to a condition known as hard setting. Mapping shows the proportion of land with surface soils susceptible to hard setting or sealing, while detailed proportion data are supplied for calculating respective areas of each physical condition of surface soil class (spatial data statistics).

Subsurface Acidification risk mapping derived from land quality attribution associated with soil-landscape mapping at the subsystem/phase level. See Resource Management Technical Report 298, Section 2.14, Department of Agriculture, 2005. This version updates two previous versions (metadata dates 08/09/2003 and 29/04/2004).

Surface carbonate often occurs as finely divided particles which reduce nutrient availability to plants and retard the degradation of some herbicides. Mapping shows the proportion of land with calcareous surface soils, while detailed proportion data are supplied for calculating respective areas of each surface carbonate class (spatial data statistics).

Susceptibility to flooding imposes a serious limitation on land especially where infrastructure is required. Mapping shows the proportion of land susceptible to flooding, while detailed proportion data are supplied for calculating total areas of susceptible land (spatial data statistics).

Water erosion potential, based on Soil Landscape Map Units of Southern South Australia, describes the susceptibility of land to sheet or rill erosion due to overland flow of water. Mapping shows the dominant water erosion potential class, while detailed proportion data are supplied for calculating respective areas of each water erosion potential class (spatial data statistics). Also available for download: Soil Water Erosion Potential (SA).

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.

This data relates to the proportion of farms who experienced significant soil acidity problems in the period 1998-1999. Proportion of farms with significant soil acidity is reported at the Statistical Division (SD) level for Australia. This data relates to broadacre and dairy farms run by owner managers. The data was collected by Resource Management Supplementary (RMS) survey interview which accompanied the ABARE Annual farm survey in 1998-1999.The data is presented at a scale of 25000000. Projection -P Albers Equal-Area Conic -D WGS84 -m 132 -o 0 -p -18 -p -36 -e 0 -n 0The following attributes are contained within the dataset; Sd_code a a unique 3 digit code for Statistical Divisions (SD), Sd_name a the name of the Statistical Division (SD),Soil_acid a the proportion of farmers who experienced problems in 1998-1999.RSE a the relative standard error for the period 1998-1999.Note that metropolitan areas are assigned a value of -99999, whilst areas with no data are assigned a value of -88888. See [further metadata](http://data.daff.gov.au/anrdl/metadata_files/pa_fdpsar9aa __01811a00.xml) for more detail.

우리나라의 토양을 405개(토양통)로 구분하고 각 토양의 특성정보를 제공합니다.* 토양특성 : 토색, 토성, 경사, 침식 정도, 토심, 자갈함량, 반층의 유무, 토양배수등급, 모암, 토양반응 등

High natural levels of sodium, that are toxic to some plants, are typically associated with deep subsoil sodicity, high pH, high boron and moderate salinity, and occur mostly in drier parts of the state. Mapping shows the proportion of land with sodium toxicity in the upper 100 cm of soil, while detailed proportion data are supplied for calculating total land areas affected (spatial data statistics).