channels; main gradients between 1 in 2000 and I in 4000 but up to 1 in 400 on tributary floodplains. Land management: Substantial parts of the system are subject to regular flooding which restricts access. Pastures are highly preferred by cattle and are prone to overuse and degradation. Levee crests and levee back slopes (units 2 & 3) are highly susceptible to erosion; control of grazing pressure is essential. Image of Levee backslopes of the Djada land system are subject to fairly regular flooding and support productive grassy woodlands with coolibah (Eucalytpus microtheca) and ghost gum (Corymbia bella). Photo: DAFWA Stylised plan diagram showing arrangement of land units for the Djada land system (numbers on diagram represent land units in table below) Table of Djada land system land units. * Numbers in brackets refer to soil family or – vegetation community/alliance in on lands of the West Kimberley ‘General report et al. 1970); + Pasture types described in Appendix 1; Note: area, WA’ (Speck 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 Landforms Soils* Vegetation* area type+ (%) Channels no Fringing forests and soils. Banks woodlands. XXNP Main channels: up to brownish E. camaldulensis - 80% 1 5 800m wide and 12m loamy alluvial Terminalia platyphylla FRIP deep. soils: fringing communities 20% Robinson (42, 43). family (21). Open grassy woodland with scattered or patchy shrubs moderately dense, tall Levee crests: mainly to medium-height grass up to 1.5m high and Mainly clayey FRGP layer, and patches of 400m wide, but alluvial soils: 80% 2 8 short annual grasses. attaining 800m inside Fitzroy family BUGP Corymbia bella alliance meanders; bank (22). 20% (22a); locally 22b. slopes up to 1%. Forbs seasonal. [Introduced buffel grass (Cenchrus ciliaris) now common]. 3 24 Levee backslopes: Brownish Very open grassy FRGP
channels; main gradients between 1 in 2000 and I in 4000 but up to 1 in 400 on tributary floodplains. Land management: Substantial parts of the system are subject to regular flooding which restricts access. Pastures are highly preferred by cattle and are prone to overuse and degradation. Levee crests and levee back slopes (units 2 & 3) are highly susceptible to erosion; control of grazing pressure is essential. Image of Levee backslopes of the Djada land system are subject to fairly regular flooding and support productive grassy woodlands with coolibah (Eucalytpus microtheca) and ghost gum (Corymbia bella). Photo: DAFWA Stylised plan diagram showing arrangement of land units for the Djada land system (numbers on diagram represent land units in table below) Table of Djada land system – land units. * Numbers in brackets refer to soil family or vegetation community/alliance in ‘General report on lands of the West Kimberley area, WA’ (Speck et al. 1970); + 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. area (%) Landforms Soils* Vegetation* Pasture type+ 1 5 Main channels: up to 800m wide and 12m deep. Channels no soils. Banks brownish loamy alluvial soils: Robinson family (21). Fringing forests and woodlands. E. camaldulensis - Terminalia platyphylla fringing communities (42, 43). XXNP 80% FRIP 20% 2 8 Levee crests: mainly up to 1.5m high and 400m wide, but attaining 800m inside meanders; bank slopes up to 1%. Mainly clayey alluvial soils: Fitzroy family (22). Open grassy woodland with scattered or patchy shrubs moderately dense, tall to medium-height grass layer, and patches of short annual grasses. Corymbia bella alliance (22a); locally 22b. Forbs seasonal. [Introduced buffel grass (Cenchrus ciliaris) now common]. FRGP 80% BUGP 20% 3 24 Levee backslopes: Brownish Very open grassy FRGP