ABSTRACT

Australia has a developed and extensive agricultural sector; grazing is especially important. Processes of land degradation and desertification are widespread in Australia, and soil science provides a necessary scientific basis for land conservation, improvement and reclamation. It is quite natural that soil classifications were developed in this country as early as the beginning of the 20th century. The objectives of the Australian classification were to serve as a basis for soil inventory and mapping. The recent version of soil classification of Australia (Isbell, 2002) has the same aim and has national coverage (Table 27.1). The scope of the Australian soil classification

Superficial bodies

Representation in the system

Natural soils

National coverage

Urban soils

Included as several suborders in the order Anthroposols

Man-transported materials

Included in the suborder Dredgic Anthroposols

Bare rock

Not recognized as soil

Subaquatic soils

Included in the order Hydrosols

Soils deeply transformed by agricultural activities

Included as several suborders in the order Anthroposols