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Performance of seven hardwood species underplanted to Pinus elliottii in south-east Queensland

Simpson, J. and Osborne, D. (2006) Performance of seven hardwood species underplanted to Pinus elliottii in south-east Queensland. Forest Ecology and Management, 233 (2-3). pp. 303-308.

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Article Link(s): http://dx.doi.org/10.1016/j.foreco.2006.05.021

Publisher URL: http://www.elsevier.com

Abstract

Seven hardwood species were tested as underplants under Pinus elliottii plantations on the coastal lowlands of south-east Queensland. The species tested were: Flindersia brayleyana (F. Muell) (Queensland maple), F. australis (R. Br.), (crow's ash), Swietenia macrophylla (King) (American mahogany), Grevillea robusta (A. cunn) (southern silky oak), Elaeocarpus grandis (F. Muell) (silver quandong), F. ifflaiana (F. Meull) (Cairns hickory) and Ceratopetalum apetalum (D. Don) (coachwood). Most species (except E. grandis) established successfully but slowly. Underplants suffered 9-16% mortality during thinning of the overstorey. By 2004 when aged c. 38 years, four underplanted species; F. brayleyana, S. macrophylla, F. ifflaiana and E. grandis, had attained predominant heights of 20 m and mean diameter at breast height of 25 cm or better. The presence of underplants increased total site productivity by up to 23% and did not have any detrimental effect on the development of the overwood.This experiment has demonstrated that some rainforest species will survive and grow healthily as underplants in exotic pine plantations plus produce small merchantable logs within a 38 year rotation. The results also indicated the importance of correct species selection if an underplanting option is to be pursued as some species have been a complete failure (notably G. robusta).

Item Type:Article
Additional Information:© Elsevier B.V.
Keywords:Underplants; mixed species plantations.
Subjects:Forestry > Sylviculture
Forestry > Exploitation and utilization
Deposited On:25 Feb 2009 02:47
Last Modified:28 Sep 2010 22:25

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