State land type: Sandplains and dunes with acacia shrublands and spinifex. Geology: Mudstone, siltstone and minor sandstone of Upper Proterozoic or Mesozoic age, laterite and minor Quaternary aeolian sand deposits. Geomorphology: Plains and low residuals formed by erosion of the Kimberley surface; flat-topped mesas with laterite ring plains. Land management: Little used system, vegetation unattractive to livestock, stable, very low susceptibility to erosion; controlled burning may be desirable. Image of gently undulating plains (unit 2) of the Bulka land system show lines of parent rock material beneath shallow soils. Vegetation is mostly lobed (hard) spinifex (Triodia intermedia) grasslands. Width of this 2004 aerial photograph is about 4km. Photo: Landgate Stylised block diagram showing location of land units for the Bulka land system (numbers on diagram represent land units in table below) Table of Bulka land system land units. + Pasture types described in Appendix 1. – Note: Proportions and occurrence of pasture types within land units are subject to change over time due to invasion by native and introduced species, seasonal conditions, fire frequency and grazing management. Pasture Unit Landforms Soils Vegetation area type+ (%) Hills and low Grassland of rises: up to 15m Lithosols; Triodia high; flat or gently outcrops of 1 10 with very HSHP sloping rocky mudstone and scattered Acacia crests up to 0.8km sandstone. spp. shrubs. wide. Grasslands dominated by Triodia intermedia with Undulating plains: Lithosols; very scattered with laterised shale shallow reddish HSPP Acacia strew and brown coarse 90% 2 60 translucens occasional outcrop sandy loams SSPP and Eremophila of laterite, laterised over laterite and 10% bignoniiflora, shale strew. mudstone. patches Triodia pungens and Eucalyptus pruinosa. Deep red sands Open grassy Sandplain islands: 3 25 CSPP with patches of shrublands of up to 1.6km wide. thin laterite Triodia bitextura,
State land type: Sandplains and dunes with acacia shrublands and spinifex. Geology: Mudstone, siltstone and minor sandstone of Upper Proterozoic or Mesozoic age, laterite and minor Quaternary aeolian sand deposits. Geomorphology: Plains and low residuals formed by erosion of the Kimberley surface; flat-topped mesas with laterite ring plains. Land management: Little used system, vegetation unattractive to livestock, stable, very low susceptibility to erosion; controlled burning may be desirable. Image of gently undulating plains (unit 2) of the Bulka land system show lines of parent rock material beneath shallow soils. Vegetation is mostly lobed (hard) spinifex (Triodia intermedia) grasslands. Width of this 2004 aerial photograph is about 4km. Photo: Landgate Stylised block diagram showing location of land units for the Bulka land system (numbers on diagram represent land units in table below) Table of Bulka land system – land units. + Pasture types described in Appendix 1. Note: Proportions and occurrence of pasture types within land units are subject to change over time due to invasion by native and introduced species, seasonal conditions, fire frequency and grazing management. Unit area (%) Landforms Soils Vegetation Pasture type+ 1 10 Hills and low rises: up to 15m high; flat or gently sloping rocky crests up to 0.8km wide. Lithosols; outcrops of mudstone and sandstone. Grassland of Triodia with very scattered Acacia spp. shrubs. HSHP 2 60 Undulating plains: with laterised shale strew and occasional outcrop of laterite, laterised shale strew. Lithosols; shallow reddish brown coarse sandy loams over laterite and mudstone. Grasslands dominated by Triodia intermedia with very scattered Acacia translucens and Eremophila bignoniiflora, patches Triodia pungens and Eucalyptus pruinosa. HSPP 90% SSPP 10% 3 25 Sandplain islands: up to 1.6km wide. Deep red sands with patches of thin laterite Open grassy shrublands of Triodia bitextura, CSPP