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 124 Marine Land Unit: 10iA/10i2A Lithology: Marine alluvium Sites: 6 Area: 32.9 km2 Landform General Description Tidal flats and creeks; Excoecaria parvifolia, Avicennia marina low woodland; deep soils *this unit is mostly 10iA with small areas of tidal flats and creeks. This component is described here. Slopes: 0 - 1% Parent Material: Alluvium (marine) Surface Gravel: 0% Rock Outcrop: 0% Drainage: Poorly drained Runoff: Slow Soil Most Common Soil: Aquic Vertosols of sites: 3 Common Soil Characteristics Surface texture class: Clayey Subsoil texture class: Clayey Soil colour: Red Surface soil gravels: 10 - 50% Subsoils gravels: 0 - 10% Soil depth: 1.0 -1.5 m Field surface pH: 6.5 - 7.5 Field subsoil pH: 7.5 - 8.5 Other soils described: Extratidal Hydrosols, Intertidal Hydrosols and Brown Kandosols Vegetation Common vegetation community: of sites Pasture rating Av crown cover % Av height (m) Excoecaria parvifolia, Avicennia marina, +/- Excoecaria ovalis low woodland 4 Moderate 26 5 Mid tussock grassland (species include Sporobolus virginicus, Echinochloa colona, Schoenoplectus sp.) 2 Moderate 75 0.35 Other communities: Stratum Frequency of dominant species Frequency of other common species Upper stratum Excoecaria parvifolia 100%, Avicennia marina 50% Excoecaria ovalis 25% Mid stratum Excoecaria parvifolia 50% Parkinsonia aculeata, Aegialitis annulata, Lumnitzera racemosa, Ceriops australis 25% Ground stratum Urochloa subquadripara, Eleocharis sp. Sporobolus virginicus, Echinochloa colona, Schoenoplectus sp. 25% Xerochloa imberbis, Leptochloa neesii, Panicum decompositum, Tecticornia indica 25% Land Evaluation Poorly drained Deep soils Gentle slopes No rock outcrop Significant habitat Acid sulfate soils Saline Extreme erosion risk: Soils have moderate levels of fine sand and silt. Extremely sodic soil. Extremely saline soil. Acid sulfate along creek lines. Where disturbance is unavoidable erosion and sediment control planning will be required. Mangrove communities are defined as wetlands. The mangrove communities in the Top End are very diverse and support highly specialised animals and provide spawning and nursery areas for many species. They also protect creeks, rivers and coastlines particularly during storm surges and cyclonic events.
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