Territory Stories

Land Resources of Auvergne Station

Details:

Title

Land Resources of Auvergne Station

Other title

A supplement to the Land Resources of the Victoria River District

Creator

Napier, Diane; Edmeades, Bart; Lynch, Brian; McGregor, Robert; Northern Territory. Department of Environment and Natural Resources

Editor

Hill, J.V.

Collection

E-Publications; E-Books; PublicationNT; Jul-18

Date

2018-06-30

Location

Auvergne Station; NT Portion 2676; Victoria River Downs; Victoria River District

Description

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.

Notes

Made available via the Publications (Legal Deposit) Act 2004 (NT)

Table of contents

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.

Language

English

Subject

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

Publisher name

Northern Territory Government

Place of publication

Palmerston

Series

Jul-18

Format

204 pages ; colour photographs, maps, figures, tables ; 30 cm.

File type

application/pdf

ISBN

9781743501498

Use

Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government

License

https://creativecommons.org/licenses/by/4.0/

Related links

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]

Parent handle

https://hdl.handle.net/10070/300258

Citation address

https://hdl.handle.net/10070/378762

Page content

Land Resources of Auvergne Station A supplement to the Land Resources of the Victoria River District 23 7. Soil Physical and Chemical Characteristics Thirty seven soils were described, sampled and analysed for soil chemical and physical properties (refer Figure 7.1). Laboratory analyses are necessary to fully characterise the soil profile to quantify soil attributes such as those used to assess erosion potential. Soils were selected for laboratory analysis on the basis that they were (i) representative of a significant group or (ii) data deficient in the region. Soil samples were obtained from the same regular fixed depth intervals at all sites, following the Northern Territory soil survey practice. Samples were collected for whole of soil (not sieved) and bagged in the field. Every 10 cm for the upper 30 cm, and then a 10 cm intervals at every 30 cm increment down the soil profile; these depths were: 0.0 - 0.1, 0.1 - 0.2, 0.2 - 0.3, 0.5 - 0.6, 0.8 - 0.9, 1.1 - 1.2, 1.4 - 1.5 m. Variation to the sample depth interval occasionally occurred where the sample intervals crossed a significant soil change such as a thin horizon at the surface (e.g. where a 0.0-0.05 m interval was sampled). Samples were also not collected at depth because some layers were too difficult to penetrate or extract. A standard set of chemical and physical analyses were undertaken (refer Appendix 1), to provide a broad suite of soil properties. All samples underwent the same suite of analysis with the exception of soils sampled for Chromium Reducible Sulfur. Acid sulfate soils testing was undertaken at two sites on the marine plains to identify the likelihood of this risk and to add to the existing dataset along the Northern Territorys coastline. The data builds on similar reconnaissance acid sulfate soil investigations published in the northern Victoria River region on Legune Station (Tickell and Hill 2001) and Bullo River (Lewis et al. 2010). In 2011, thirteen representative soils of the Victoria River District were sampled and the results can be found in Napier and Hill (2012). Sites relevant to this report, VRD 11 3 sampled from Newry, VRD11 4 sampled from Auvergne, VRD11 12 sampled from Riveren and SWIFS 17 sampled from Pigeon Hole have been used to supplement soil deficient data on Auvergne and provide the basis for assessing erosion risk (refer Appendix 7). Laboratory analysis for the 2015 sites was conducted by Environmental Analysis Laboratory (EAL), Southern Cross University, New South Wales (ASPAC certified). Fourteen profiles were analysed including two sites for Chromium Reducible Sulfur. Laboratory analysis for the 2016 sites was conducted by Queensland Government Department of Science, Information Technology and Innovation (DSITI), Natural Resource Sciences Chemistry Centre, Queensland (ASPAC certified). Twenty three profiles were sampled and analysed. The results of the laboratory analysis are provided in Appendix 2 and includes data from the sites sampled in 2015 and 2016. The data from the relevant 2011 sites are summarised in Appendix 4. Appendix 3 summarises the results from the two sites tested for Chromium Reducible Sulfur. Discussion based on the results of the thirty seven samples in regard to inherent erosion, acid sulfate, salinity and sodicity are addressed in the following sections.


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