Finding optimal soil restoration strategies in the face of uncertain future rainfall depth

Arnold, Sven (2012). Finding optimal soil restoration strategies in the face of uncertain future rainfall depth. In: Life-of-Mine Conference 2012: Conference Proceedings. Life of Mine Conference (AusIMM), Brisbane, Australia, (91-95). 10-12 July 2012.

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Name Description MIMEType Size Downloads
Author Arnold, Sven
Title of paper Finding optimal soil restoration strategies in the face of uncertain future rainfall depth
Conference name Life of Mine Conference (AusIMM)
Conference location Brisbane, Australia
Conference dates 10-12 July 2012
Proceedings title Life-of-Mine Conference 2012: Conference Proceedings
Place of Publication Carlton North, VIC, Australia
Publisher The Australasian Institute of Mining and Metallurgy (AusIMM)
Publication Year 2012
Sub-type Fully published paper
ISBN 9781921522666
Start page 91
End page 95
Total pages 5
Collection year 2013
Language eng
Abstract/Summary Properties of the soil profile fundamentally control water-limited ecosystems. Soil water availability affects vegetation dynamics of plant communities, but is also affected by these communities in return. Understanding this eco-hydrological interplay and the role of physical soil restoration is crucial for successful rehabilitation and management of post-mining landscapes in semi-arid areas. However, uncertainties exist in both the mathematical description of plant communities within ecological submodels and the predictability of future rainfall events. This study uses information gap decision theory combined with an ecohydrological system model to investigate how both uncertainties impact decision-making in the context of ecosystem rehabilitation. A range of management strategies are investigated to identify the optimal soil thickness for successful rehabilitation of native plant communities in Central Queensland. The results emphasise that thicker soils can counterbalance uncertainty in mathematical description of plant communities by increasing the simulated survival probability of plant communities. However, the influence of thicker soils on the robustness of plant communities against a change in future rainfall amount is rather marginal. By allocating an economic value for restoring a particular thickness of soil layer, these results can be used to evaluate the costs of ecosystem re-establishment with regard to two target measures – the survival probability of the plant community and their robustness against climate change.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Conference theme 'Maximising Rehabilitation Outcomes'

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Created: Wed, 21 Nov 2012, 12:57:56 EST by Dr Sven Arnold on behalf of Centre For Mined Land Rehabilitation