Land Resources of Auvergne Station
A supplement to the Land Resources of the Victoria River District
Napier, Diane; Edmeades, Bart; Lynch, Brian; McGregor, Robert; Northern Territory. Department of Environment and Natural Resources
E-Publications; E-Books; PublicationNT; Jul-18
Auvergne Station; NT Portion 2676; Victoria River Downs; Victoria River District
This report for Auvergne Station is a supplement to Land Resources of the Victoria River District (2012) and completes the land resource assessment of the district which covers 24 properties and approximately 78 760 km² of pastoral land. Land unit mapping at 1:100 000 describes the landforms, soils and vegetation in the district.
Made available via the Publications (Legal Deposit) Act 2004 (NT)
Table of contents; 1. Introduction; 2. Previous mapping; 3. Survey methodology and data collection; 4. Lithology; 5. Landform; 6. Soil; 7. Soil physical and chemical characteristics; 8. Vegetation; 9. Land evaluation; 10. Soil erosion; 11. Land unit descriptions; 12. References; Appendices 1 - 12.
Soils -- Northern Territory -- Auvergne Station; Land use -- Northern Territory -- Auvergne Station; Geology -- Northern Territory -- Auvergne Station; land resource assessment; land units; soil landscapes; vegetation communities
Northern Territory Government
204 pages ; colour photographs, maps, figures, tables ; 30 cm.
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=E3F20A909A8123ADE040CD9B21446CC0; http://hdl.handle.net/10070/245323 [Land resources of the Victoria River District]
Land Resources of Auvergne Station A supplement to the Land Resources of the Victoria River District 121 Drainage Systems Land Unit: 8l13A Lithology: Alluvium Sites: 8 Area: 31 km2 Landform General Description Relict channels, swales and backplains associated with the upper reaches of the Victoria River and Baines River systems: low forblands or Excoecaria parvifolia low woodland; deep cracking and non-cracking soils Slopes: 0 - 2% Parent Material: Alluvium Surface Gravel: 0% Rock Outcrop: 0% Drainage: Poorly drained Runoff: Very slow Soil Most Common Soil: Aquic Vertosols of sites: 4 Common Soil Characteristics Surface texture class: Clayey Subsoil texture class: Clayey Soil colour: Brown Surface soil gravels: 0% Subsoils gravels: <2% Soil depth: 1.0 -1.5 m Field surface pH: 4.5 - 5.5 Field subsoil pH: 7.5 - 8.5 Other soils described: Redoxic Hydrosols, non-gravelly, clayey, very deep; Hydrosols and Brown Kandosols Vegetation Common vegetation community: of sites Pasture rating Av ground cover % Av height (m) Glinus lotoides, Coldenia procumbens, Pseudoraphis spinescens low forbland (relict channels) 3 Moderate 53 0.04 Excoecaria parvifolia, Cathormium umbellatum low woodland (relict channels and backplains) 2 Moderate 21.6 6 Other communities: Eucalyptus microtheca mid woodland (2; swales), Eucalyptus camaldulensis mid woodland (1; relict channels) Stratum Frequency of dominant species Frequency of other common species Upper stratum Cathormium umbellatum, Barringtonia acutangula, Excoecaria parvifolia 33% Mid stratum Aeschynomene indica, Excoecaria parvifolia Senna obtusifolia, Cathormium umbellatum 33% Ground stratum Glinus lotoides, Pseudoraphis spinescens, Coldenia procumbens 67%, Melochia pyramidata 33% Leptochloa neesii 67%, Cullen cinereum, Aeschynomene indica, Cressa australis 33% Land Evaluation Poorly drained Deep soils Level to gentle slopes No rock outcrop Significant habitat Saline Very high erosion risk. Soils have moderate levels of fine sand and silt. Extremely sodic subsoils with shallow buried horizons. Saline profile in some areas. Moderate grazing pressure. Any disturbance of wetlands and drainage systems should always be avoided. Where disturbance is unavoidable erosion and sediment control planning will be required. Channels and prior streams are largely forbland communities with the swales and backplains being generally woodlands. Channels and prior streams such as these are defined as wetlands. Wetlands are critical to a large number of wildlife species and many contain animal and plant species that are found nowhere else. These habitats are vulnerable to degradation by fire, over grazing, feral animals and weed invasion.
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