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Table 1 Mean ground cover characteristics of the field plots on the Simi and Old fires by burn severity class based on dNBR class values—standard error of the mean is in parentheses. Organic ground cover refers to green and non-photosynthetic vegetation, while inorganic refers to soil, rock and ash. The Analysis of Variance (ANOVA) F-value statistic is significant at p < 0.05.

From: Mapping Ground Cover Using Hyperspectral Remote Sensing after the 2003 Simi and Old Wildfires in Southern California

Ground cover category Burn severity class F-value p-value
Low Moderate-low Moderate-high High
dNBR values
100–269 270–439 440–659 660–1300
Simi fire plots n = 19 n = 22 n = 13 n = 0   
Organic-uncharred (%) 22(3.2) 8(1.8) 5(2.0)   13.5 <0.0001
Organic-charred (%) 15(2.2) 12(2.3) 7(1.6)   2.3 0.11
Inorganic-uncharred (%) 40(3.2) 50(4.6) 43(6.3)   1.5 0.24
Inorganic-charred (%) 21(4.4) 28(4.6) 44(6.4)   4.8 0.01
Old fire plots n = 3 n = 8 n = 19 n = 24   
Organic-uncharred (%) 27(5.0) 15(6.0) 5(1.9) 1(0.2) 12.8 <0.0001
Organic-charred (%) 4(2.3) 14(4.7) 8(1.1) 6(1.1) 3.3 0.03
Inorganic-uncharred (%) 38(9.0) 32(7.0) 37(4.5) 16(2.4) 6.6 0.0007
Inorganic-charred (%) 7(3.1) 38(9.4) 49(4.3) 77(2.4) 24.3 <0.0001