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QLD Total Clearing 1991 - 2001 By Bioregion complied by BREC from the DNRM SLATS Reports 1991-2001


Table One Woody Vegetation Clearing by Bioregion 1991-2001 in Km2

Table Two Trends in Woody Vegetation Cover and Percentage of 1991 Woody Vegetation Lost By Bioregion 1991-2001 in Km2


Important Caveats from the SLATS 1999-2001 Report
Both clearing and regrowth of woody vegetation were classified. Regrowth was more difficult to
measure due to slow rates of change (relative to clearing) and the low initial density of some
regrowth stands. The new woody regrowth figures included in the tables are regrowth generation,
i.e. areas which have changed from non-woody to woody within the 1999-2001 period. SLATS has
not yet attempted to use Landsat imagery to map long term changes in vegetation cover such as the
woodland thickening described by Burrows et al. (2002). Landsat ETM+ satellite imagery is also
limited in its ability to reliably detect woody thinning using automated methods.
This report is also the first SLATS statewide report to include woody vegetation cover statistics.
These figures are based on the 1991 land cover and vegetation cover mapping described by
Kuhnell et al. (1998) and updated using the various change analyses from 1991 to 2001.
When calculating woody vegetation cover statistics the unclassified
areas were counted as woody areas. They are mostly the result of shadowing and typically occur
in steep densely vegetated areas.
It is also important to note that the tabular statistics derived from the intersection of these data show
slightly different State clearing totals due to the different scales of the GIS overlays used.

Summary Table - QLD Total Woody Vegetation Clearing by Biogeographic Region 91-01          
Bioregion Area (km2) Total Cleared % Bioregion area cleared 91-01 % Total clearing in QLD
Brigalow Belt 363,910 20,414.72 5.61% 53.14%
Channel Country 231,870 79.98 0.03% 0.21%
Central Mackay Coast 14,590 295.40 2.02% 0.77%
Cape York Peninsula 121,170 137.96 0.11% 0.36%
Desert Uplands 68,840 4,190.90 6.09% 10.91%
Einasliegh Uplands 118,860 322.98 0.27% 0.84%
Gulf Uplands 217,930 220.14 0.10% 0.57%
Mitchell Grass Downs 243,190 2,340.46 0.96% 6.09%
Mulga Lands 187,450 8,516.40 4.54% 22.17%
Northern New England Tablelands 7,750 218.00 2.81% 0.57%
North West Highlands 72,320 41.02 0.06% 0.11%
South Eastern Queensland 61,740 1,407.78 2.28% 3.66%
Wet Tropical Rainforest 19,930 233.42 1.17% 0.61%
Totals 1,729,550 38,419.16 2.22% 100.00%



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  Chart Queeensland Total Woody Vegetation Clearing 1991-2001
By Bioregion


Table One - QLD Total Woody Vegetation Clearing and New Regrowth by Biogeographic Region 91-01                      
      CLEARING    
Bioregion Area (km2) New woody regrowth Pasture Crops Forest Mining Infra-structure Settlement Total Cleared % Bioregion area cleared 91-01 % Total clearing in QLD
Brigalow Belt 363,910 1,164.02 18,337.02 1,561.46 97.64 116.86 288.64 9.75 20,414.72 5.61% 53.14%
Channel Country 231,870 1.44 68.30 - - 0.30 11.40 - 79.98 0.03% 0.21%
Central Mackay Coast 14,590 36.84 117.16 143.56 20.52 0.06 12.80 1.20 295.40 2.02% 0.77%
Cape York Peninsula 121,170 4.42 38.84 35.86 - 27.88 35.02 0.33 137.96 0.11% 0.36%
Desert Uplands 68,840 45.78 4,121.32 - - 1.34 68.14 0.06 4,190.90 6.09% 10.91%
Einasliegh Uplands 118,860 25.22 161.22 102.50 1.48 9.20 47.72 0.66 322.98 0.27% 0.84%
Gulf Uplands 217,930 9.20 173.42 - - 0.08 46.40 0.30 220.14 0.10% 0.57%
Mitchell Grass Downs 243,190 46.02 2,332.16 0.02 - 1.30 6.90 0.08 2,340.46 0.96% 6.09%
Mulga Lands 187,450 370.48 8,379.44 40.68 0.62 0.12 95.20 0.32 8,516.40 4.54% 22.17%
Northern New England Tablelands 7,750 46.40 205.26 0.96 9.24 0.14 2.16 0.24 218.00 2.81% 0.57%
North West Highlands 72,320 - 17.24 - - 10.10 13.74 - 41.02 0.06% 0.11%
South Eastern Queensland 61,740 455.20 578.70 130.08 440.64 22.90 48.40 159.59 1,407.78 2.28% 3.66%
Wet Tropical Rainforest 19,930 34.92 36.26 171.96 15.50 0.14 4.88 4.12 233.42 1.17% 0.61%
Totals 1,729,550 2,239.94 34,566.34 2,187.08 585.64 190.42 681.40 176.64 38,419.16 2.22% 100.00%
                       
                       
                       


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  Chart Queensland Losses in Woody Vegetation 1991-2001
By Bioregion


Table Two - QLD Woody Vegetation Trends 1991-2001 By Bioregion                      
Bioregion Area (km2) New Woody Regrowth Km2 Total Woody Veg Cleared 91-01 Km2 % Bioregion Woody Veg 1991 % Bioregion Woody Veg 1999 % Bioregion Woody Veg 2001 Woody Veg 1991 Km2 Woody Veg 1999 Km2 Woody Veg 2001 Km2 % of 1991 Woody Veg Lost 91-01 % of 1991 Woody Veg Gained 91-01
Brigalow Belt 363,910 1,164.02 20,414.72 51.07% 46.97% 45.46% 185,860 170,929 165,445 10.98% 0.63%
Channel Country 231,870 1.44 79.98 8.34% 8.31% 8.30% 19,331 19,268 19,251 0.41% 0.01%
Central Mackay Coast 14,590 36.84 295.40 77.95% 76.42% 75.92% 11,373 11,150 11,077 2.60% 0.32%
Cape York Peninsula 121,170 4.42 137.96 92.91% 92.81% 92.79% 112,574 112,458 112,436 0.12% 0.00%
Desert Uplands 68,840 45.78 4,190.90 77.74% 73.44% 71.65% 53,514 50,556 49,323 7.83% 0.09%
Einasliegh Uplands 118,860 25.22 322.98 86.12% 85.94% 85.85% 102,367 102,148 102,044 0.32% 0.02%
Gulf Uplands 217,930 9.20 220.14 60.71% 60.63% 60.61% 132,301 132,131 132,081 0.17% 0.01%
Mitchell Grass Downs 243,190 46.02 2,340.46 11.80% 11.22% 10.84% 28,703 27,286 26,363 8.15% 0.16%
Mulga Lands 187,450 370.48 8,516.40 54.22% 51.36% 49.67% 101,632 96,274 93,115 8.38% 0.36%
Northern New England Tablelands 7,750 46.40 218.00 44.73% 42.43% 41.92% 3,467 3,288 3,249 6.29% 1.34%
North West Highlands 72,320 - 41.02 50.67% 50.63% 50.61% 36,645 36,616 36,603 0.11% 0.00%
South Eastern Queensland 61,740 455.20 1,407.78 59.31% 57.67% 57.03% 36,620 35,605 35,212 3.84% 1.24%
Wet Tropical Rainforest 19,930 34.92 233.42 81.15% 80.08% 79.98% 16,173 15,960 15,940 1.44% 0.22%
Totals 1,729,550 2,239.94 38,419.16 48.60% 47.05% 46.38% 840,558 813,669 802,138 4.57% 0.27%

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Last Updated on 04-Sep-03
By lorax