File(s) not publicly available

Pasture production in cleared and uncleared grazing systems of central Queensland, Australia

Clearing land of trees and introducing exotic pastures to enhance pasture and cattle production and hence enterprise financial performance are widely practised in Queensland. The results from amny previous studies on tree clearing have emphasised the gains in pasture production, but over periods of less than 10-1 years after clearing. The present study questioned the sustainablility of pasture production in cleared systems over a longer time-frame (>10 years of clearing). For this, three different age groups of clearing i.e. 5 year, 11-13 year and 33 year were selected in each of 3 major types of tree communities i.e. Eucalyptus populnea, E. melanophloia and Acacia harpophylla in central Queensland. Paired comparisons of cleared and uncleared (intact) pasture systems were selected for each age group of clearing. The results suggest that the initial gains in pasture production upon clearing were compatible with published studies. However, for longer periods of time since clearing, the gains in pasture production were not sustained and were accompanied by risks of land degradation and loss of pasture plant diversity. For E. populnea and A. harpophylla, the maximum benefits from clearing were achieved at 13-15 years whereas for E. melanophloia, any benefits existed only over a short period of 5-6 years. The study emphasises that each tree community exhibits a specific response with regard to the duration of increased pasture production following clearing. To estimate the total benefits from tree clearing in pasture development, it is important to consider both monetary benefits and non-monetary losses from clearing for different types of tree communities.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

27

Issue

2

Start Page

143

End Page

149

Number of Pages

7

eISSN

1834-7541

ISSN

1036-9872

Location

Australia

Publisher

CSIRO Publishing

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Centre for Environmental Management; Faculty of Business and Law; Primary Industries Research Centre;

Era Eligible

Yes

Journal

Rangeland journal.

Usage metrics

Exports