Mining disturbance alters phosphorus fractions in northern Australian soils

Short, T. A., Menzies, N. W. and Mulligan, D. R. (2000) Mining disturbance alters phosphorus fractions in northern Australian soils. Australian Journal of Soil Research, 38 2: 411-421. doi:10.1071/SR99033

Author Short, T. A.
Menzies, N. W.
Mulligan, D. R.
Title Mining disturbance alters phosphorus fractions in northern Australian soils
Journal name Australian Journal of Soil Research   Check publisher's open access policy
ISSN 0004-9573
Publication date 2000
Sub-type Article (original research)
DOI 10.1071/SR99033
Volume 38
Issue 2
Start page 411
End page 421
Total pages 11
Editor R Loch and D Jasper
Place of publication Collingwood, Victoria
Publisher CSIRO
Collection year 2000
Language eng
Subject C1
300103 Soil Chemistry
771007 Rehabilitation of degraded mining lands
Abstract The brown kandosol soils at Weipa, North Queensland, contain little soil phosphorus (P). Plant-available fractions (considered in this study to include resin, hydroxide, and dilute acid extractable P) approximate 85 g P/g, or 70% of total soil P, the majority of which is in labile organic forms, highlighting the importance of P cycling within the native eucalypt forest. A field experiment was undertaken to evaluate the effect of soil handling during bauxite mining on the distribution of P between the various soil fractions. This study showed that soil stripping and replacement disrupts the P cycle and affects the proportional distribution of P between soil fractions. Horizon mixing during soil handling severely reduces the size of plant-available soil P fractions in surface soils (0-5 cm depth) and this can only be partially compensated by the addition of fertiliser. A survey of rehabilitated sites of differing ages showed that restoration of soil organic P fractions is extremely slow, with the overall distribution of P within replaced soils remaining different from that within undisturbed soils 15 years after rehabilitation to native forest or exotic pasture species.
Keyword Agriculture, Soil Science
Soil Phosphorus
Phosphorus Fractionation
Mine Disturbance
Tropical Soils
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Mined Land Rehabilitation Publications
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Created: Tue, 10 Jun 2008, 11:25:28 EST