Land Theme Report

Australia State of the Environment Report 2001 (Theme Report)
Prepared by: Ann Hamblin, Bureau of Rural Sciences, Authors
Published by CSIRO on behalf of the Department of the Environment and Heritage, 2001
ISBN 0 643 06748 5

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Figure 1 - NOAA images of flush difference, 1993-1994 and 1998-1989, showing differences in seasonal greening between dry and wet phases of the Southern Oscillation
Figure 3 - Areas of increasing and decreasing bare ground compared with lowest previous value (1991-2000) located in little altered but grazed agricultural lands
Figure 8 - Mean and range (standard error) of dry matter production from grazed lands in statistical local areas within the Intensive Land-use Zone, 1983-1997
Figure 9 - Mean and range (standard error) in dry sheep equivalents of domestic stock in statistical local areas within the Intensive Land-use Zone, 1983-1997
Figure 10 - Domestic stock densities in 1997
Figure 11 - Reductions and increases in stocking densities (DSE/km²) in the Extensive Land-use Zone, 1996 and 1999
Figure 12 - Locations of soil profile sites in Australia
Figure 13 - Continental sheet erosion estimates, based on 1997 land use distributions, and 1990-1999 seasonal greenness (NDVI) and rainfall regimes
Figure 14 - Ratio of current to pre-1750 vegetation sheet erosion rates
Figure 15 - Burdekin River plumes in 1974 (the largest flood ever modelled) and 1995 (an average year) at 63 and 65 days after the event
Figure 16 - Dust storm index (natural erosion) and accelerated erosion index (anthropogenically related) for the decade 1986-1996
Figure 17 - Dust storm index for the El Nio year 1994
Figure 18 - Dust storm index with 300 mm and 500 mm median rainfall lines, and accelerated erosion index for 1996-1999
Figure 21 - Distribution of periods of exceptional drought (less than 5% of long-term average rainfall for 12 months or more) from January 1990 to December 1994 and January 1995 to December 2000
Figure 22 - Total applications for exceptional circumstances by regions
Figure 23 - Successful applications for exceptional circumstances by regions
Figure 26 - Location of Australian forest types and the regions covered by Regional Forest Agreements
Figure 27 - Land disturbance calculated by remoteness from settlement, 1995
Figure 28 - Land disturbance calculated by accessibility, 1995
Figure 29 - Land use in Australia
Figure 30 - Trends in shire wheat yields, 1982-1997
Figure 33 - Maximum, minimum and average land use intensity 1983-1997
Figure 34 - Broadacre farm total factor productivity growth, 1978-1998
Figure 35 - Area assessed for land cover change, 1990-1995
Figure 36 - Percentage cover of remaining native woody vegetation, 1990
Figure 37 - Extent of clearing in biogeographical regions, 1990-1995
Figure 39 - Seasonal occurences of fires (hot spots) across Australia for 1998 to 2000
Figure 40 - Land tenure in the extensive Land-use Zone, 1999
Figure 41 - Changes in woody vegetation in states and territories since European settlement
Figure 45 - Agro-ecological regions of Australia
Figure 46 - Threatened habitat areas in south-eastern South Australia, with simplified land use legend and categories
Figure 49 - Torres Strait Protected Zone and Special Quarantine Zone
Figure 50 - perennial and annual vegetation and percentages by drainage basin
Figure 51 - percentage perennial vegetation cover across catchments of south-west Western Australia, calculated from 1996 landsat TM imagery
Figure 53 - Forecast areas of high risk (predicted) or hazard (estimated) of dryland salinity by 2050 in Australia
Figure 54 - Surface soil (0-0.1m) pH distribution in agricultural soils of the Intensive Land-use Zone
Figure 55 - Water utilisation by vegetation, derived from NDVI and rainfall data 1991-1999
Figure 57 - Areas at current risk of dryland salinity in south-western Western Australia
Figure 58 - Existing saline areas and potential areas in the Cranbrook region
Figure 63 - Surface water quality in 2000, significant nutrient exceedances
Figure 65 - Nitrogen, phosphorus and potassium fertiliser application rates for crops and pastures, 1992-1996
Figure 66 - Continental soil carbon, nitrogen and phosphorus simulations using the BIOS model, with and without the effect of current levels of fertiliser and legume inputs
Figure 68 - Continental estimate of net primary productivity extrapolated from 183 undisturbed natural habitats
Figure 75 - Antarctica and Southern Ocean

State of the Environment

2001

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