Geobotany Volume 13, 1989, pp 13-21

The soils and landforms of the northern jarrah forest

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Abstract

The jarrah forest ecosystem is unique to the south-western corner of Western Australia. It occurs on the highly leached soils of the Darling Plateau which forms the south-western part of the Great Plateau of Western Australia (Jutson 1934). Annual rainfall ranges from 750 to 1400 mm, with prime forest in areas where rainfall exceeds 1000 mm. Its distribution extends from Toodyay in the north to Albany in the south and its eastern limit is approximately the 750 mm isohyet. This chapter describes the physical setting, in particular, the soils and land Fig. 1

Location of the northern jarrah forest ecosystem. Position of the landform/soil map in Fig. 3 also shown.
forms, of the northern part of the ecosystem, as far south as the catchment of the Collie River (Fig. 1).