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

Tables

Table 1 - Summary of trends in pressures, conditions and responses affecting land in Australia from 1996 to 2001
Table 2 - Natural and anthropogenic features resulting from ecosystem processes
Table 3 - Changes in basal area of lowest-ever NDVI reflectance values equivalent to increases (+) or decreases (-) in bare ground for four land use categories using IBRA regions.
Table 4 - Estimates of non-domestic herbivore populations considered to increase total grazing pressure
Table 5 - Comparison of animal numbers and estimates of rangeland land degradation, early and late 1990s
Table 6 - Estimated soil loss in each land-use class
Table 7 - Mean annual flow rates and estimated annual sediment export from North Queensland catchments
Table 8 - Trend in average and bottom 25% net farm income ($'000) 1988-1995
Table 9 - Farm business profit for various farm types ($,000) 1997-2000
Table 10 - Extent of agricultural practices to reduce erosion
Table 11 - South Australian adoption of stubble retention on crop lands
Table 12 - Forest lands used for extractive wood purposes
Table 13 - Principal land uses and level of erosion control practised
Table 14 - Land use classification according to degree of alternation
Table 15 - Decreases in the area (ha) of woody vegetation resulting from various causes, 1990-1995
Table 16 - Increases in woody vegetation (greater than 20% crown cover), 1990-1995
Table 17 - Areas of woody vegetation cleared in states and territories in 1999 and 2000
Table 18 - Annual total area of fire-scars in the Kimberleys (all north-west for 1998-99
Table 19 - Fire-affected area detected by NOAA remote sensing, 1998-2000
Table 20 - Areas of Australian rangeland tenures based on the AUSLIG 1993 tenure classification
Table 21 - Changes to land clearing regulations since 1996
Table 22 - Number of incursion and spreading events by States, 1990-2000 (part year)
Table 23 - AERs with more than 50% vegetation types disturbed over more than 75% of agricultural land
Table 24 - Weeds of national significance and their impact. All the species were selected, in part, because they have high impact on endangered species and habitats, and on environmental processes. They have been identified because their present distribution is large and/or potential rate of spread is rapid. Strategies for their control have been, or are being, developed
Table 25 - Biological control projects targeting individual weeds, and control agent releases in Australia since 1912
Table 26 - Estimated changes needed to vegetation in high, medium and low rainfall areas, from current experimental and modelled information
Table 27 - Areas with a high potential to develop dryland salinity in Australia
Table 28 - Percentage of farms by region with planted trees (excluding orchards)
Table 29 - Catchments monitored for pollutants: CMSS estimated values for nitrogen (N) and phosphorus (P)
Table 30 - The Hawkesbury-Nepean catchment: total N and P estimated entering into water bodies, using CMSS model
Table 31 - Point Sources of N and P entering the Murray-Darling river systems
Table 32 - Typical annual total phosphorus and total nitrogen loads exported from catchments under different land uses in three regions of Australia
Table 33 - Environmental legislation by jurisdiction
Table 34 - Summary of National Pollutant Inventory categories
Table 35 - Emission estimates for solid and liquid wastes from Olympic Dam, 1998-1999
Table 36 - Chemicals tested by the National Residue Survey.
Table 37 - Reviews of agricultural chemicals undertaken by the National Registration Authority

State of the Environment

2001

Environment home

Land Theme Report

Tables