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A contemporary assessment of land condition in the Northern Gulf region of Queensland

Shaw, K.A. and Rolfe, J.W. and English, B.H. and Kernot, J.C. (2007) A contemporary assessment of land condition in the Northern Gulf region of Queensland. Tropical Grasslands, 41 (4). pp. 245-252.

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Publisher URL: http://www.tropicalgrasslands.asn.au

Abstract

A framework using assessments of soil condition, pasture composition and woodland density was applied to describe 14 grazing land types as being in A (100% of original carrying capacity), B (75%), C (45%) or D (20%) condition. We assessed the condition of 260 sites, principally along public and some station roads, to provide a benchmark for current land condition. Land types were also assigned relative grazing values between 10 (best) and 0, reflecting soil fertility and potential biomass production. The method identifies particular, 'at-risk' land types for priority investment of resources, while the rationale behind assessments might point to management interventions to improve the condition of those land types. Across all land types, 47% of sites were in A condition, 34% in B condition, 17% in C condition and only 2% in D condition. Seventy-five percent of land types with grazing values >5 were in A or B condition, compared with 88% for those with grazing values ?5. For Georgetown granites, only 27% of sites were in A or B condition, with values for other land types being: alluvials 59%, black soils 64% and red duplex soils 57%, suggesting that improving management of these land types is a priority issue. On land types with high grazing value, the major discounting factor was pasture composition (72% of sites discounted), while increasing woodland density was the main discount (73% of sites discounted) on low grazing value land types.

Item Type:Article
Additional Information:© Tropical Grassland Society of Australia Inc.
Keywords:Grazing land types; land condition; Northern Gulf region; Queensland; relative grazing values.
Subjects:Animal culture > Rangelands. Range management. Grazing
Agriculture > Agriculture (General) > Soils. Soil science
Deposited On:25 Feb 2009 04:53
Last Modified:18 Nov 2010 03:28

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