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Table. 3 Dimensions (km2) and relative portions (%) of different forest categories and landscape units in the study area at present (actual forest area) and in 1986, prior to the large forest fires

From: Geoecological parameters indicate discrepancies between potential and actual forest area in the forest-steppe of Central Mongolia

   Actual forest area Burnt forest Forest distribution in 1986 Steppe
  Forest-size class 1 2 3 4 1 2 3 4
Absolute area of landscape type (km2) Steppe-dominated area         
Interior 4.74 18.25 21.51 7.29 3.88 5.59 19.65 22.90 7.92 1042.29
Edge 11.07 12.33 7.65 1.69 10.28 16.19 6.92 1.37
Ratio I/E 0.43 1.48 2.81 4.32   0.54 1.21 3.31 5.80  
Forest-dominated area         
Interior 12.66 82.93 144.04 440.35 115.25 13.90 87.52 120.78 606.55 1907.62
Edge 43.55 52.56 44.21 107.34 32.10 42.10 32.12 105.36
Ratio I/E 0.29 1.58 3.26 4.10   0.43 2.08 3.76 5.76  
High-mountain area         
Interior 1.73 7.51 6.40   693.33 3.74 29.70 65.66 491.08 1021.74
Edge 13.06 6.73 2.32   10.70 15.92 20.71 93.56
Ratio I/E 0.13 1.12 2.76    0.35 1.87 3.17 5.25  
Alluvial forest 3.98 3.42 1.09   0.05 2.74 2.74 2.74   485.74
Dune       0.01     27.28
Relative proportion of landscape type (%) Steppe-dominated area         
Interior 0.07 0.29 0.34 0.11 0.06 0.09 0.31 0.36 0.12 16.40
Edge 0.17 0.19 0.12 0.03 0.16 0.25 0.11 0.02
Sum 0.25 0.48 0.46 0.14   0.25 0.56 0.47 0.15  
Forest-dominated area         
Interior 0.20 1.30 2.27 6.93 1.81 0.22 1.38 1.90 9.54 30.02
Edge 0.69 0.83 0.70 1.69 0.51 0.66 0.51 1.66
Sum 0.88 2.13 2.96 8.62   0.72 2.04 2.41 11.20  
High-mountain area         
Interior 0.03 0.12 0.10   10.91 0.06 0.47 1.03 7.73 16.08
Edge 0.21 0.11 0.04   0.17 0.25 0.33 1.47
Sum 0.23 0.22 0.14    0.23 0.72 1.36 9.20  
Alluvial forest 0.13    0.001 0.04 0.07 0.02   7.64
Dune           0.43