Land cover maps disturbed by SIS are presented in Figure 8. The original land cover map (USEPA 2010) is given in Figure 1. As seen in Figure 8, land cover classes became more fragmented in the disturbed maps, and small patches surrounded by larger ones shrunk or disappeared. Area statistics for land use classes of the disturbed land use map are provided and compared with the original in Table 4. The averaged areas of forest, low intensity residential, and open water in the disturbed land cover maps are greater than those of the original whereas the others are smaller.
Table 4

Area statistics of the disturbed NLCDs to land cover classes (unit: ha)

ClassOriginalMinMaxMeanStdevaCVb
Open water 0.36 0.27 1.89 0.69 0.26 0.381 
Low intensity residential 18.99 19.26 22.59 21.01 0.82 0.039 
Commercial/industrial 1.98 1.17 3.15 1.93 0.35 0.184 
Deciduous forest 50.04 50.67 55.44 52.82 1.02 0.019 
Evergreen forest 21.78 21.78 25.65 23.59 0.81 0.034 
Mixed forest 14.31 10.89 14.67 12.45 0.76 0.061 
Pasture/hay 192.24 184.95 193.95 189.43 1.64 0.009 
Row Crops 29.16 24.30 28.89 26.94 0.90 0.033 
ClassOriginalMinMaxMeanStdevaCVb
Open water 0.36 0.27 1.89 0.69 0.26 0.381 
Low intensity residential 18.99 19.26 22.59 21.01 0.82 0.039 
Commercial/industrial 1.98 1.17 3.15 1.93 0.35 0.184 
Deciduous forest 50.04 50.67 55.44 52.82 1.02 0.019 
Evergreen forest 21.78 21.78 25.65 23.59 0.81 0.034 
Mixed forest 14.31 10.89 14.67 12.45 0.76 0.061 
Pasture/hay 192.24 184.95 193.95 189.43 1.64 0.009 
Row Crops 29.16 24.30 28.89 26.94 0.90 0.033 

aStandard deviation.

bCoefficient of variation.

Figure 8

Two samples of the 100 disturbed land cover data grids.

Figure 8

Two samples of the 100 disturbed land cover data grids.

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