A comparison of rehabilitated coal mine soil and unmined soil supporting grazed pastures in south-east Queensland

Melland, Alice R. and Eberhard, Jochen and Paton, Col and Baillie, Craig and Bennett, John McL. (2014) A comparison of rehabilitated coal mine soil and unmined soil supporting grazed pastures in south-east Queensland. In: National Soil Science Conference (NSS 2014): Securing Australia's Soils for Profitable Industries and Healthy Landscapes, 23-27 Nov 2014, Melbourne, Australia.

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Abstract

Land that is disturbed by mining activities is required to undergo suitable rehabilitation. This study compared
soils supporting grazed pasture on land that was rehabilitated after coal mining activity with that on unmined land. Pasture biomass, and soil physical and chemical properties important for pasture production and
sustainability were intensively monitored on three sites that had completed rehabilitation at different times over the last 10 years, and one unmined control site. A further 18 unmined grazing sites were monitored for benchmarking purposes. Analysis of soil properties of plant available phosphorus and nitrogen, salinity and sodicity in the first year of the study suggested little difference in terms of benefits or constraints to pasture production between the rehabilitated and control sites. Plant-available phosphorus was sufficiently high in the two oldest rehabilitated sites that a fertiliser response would not be expected. Soil depth and the pasture rooting depth at the rehabilitated sites were at the shallow end of the wide range observed across the benchmark and control sites. Higher pasture biomass at the rehabilitated sites compared with the control
at the initiation of the trial was attributed more to differences in grazing history than differences in soil
attributes.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2014 Australian Society of Soil Science Incorporated. This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 22 Apr 2015 00:01
Last Modified: 23 Jun 2017 00:35
Uncontrolled Keywords: environmental rehabilitation; grazing land; Acland; New Hope mine
Fields of Research : 05 Environmental Sciences > 0503 Soil Sciences > 050304 Soil Chemistry (excl. Carbon Sequestration Science)
05 Environmental Sciences > 0503 Soil Sciences > 050302 Land Capability and Soil Degradation
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070301 Agro-ecosystem Functionand Prediction
Socio-Economic Objective: D Environment > 96 Environment > 9612 Rehabilitation of Degraded Environments > 961205 Rehabilitation of Degraded Mining Environments
URI: http://eprints.usq.edu.au/id/eprint/26654

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