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Fire Ecology
Fig. 6 | Fire Ecology

Fig. 6

From: Modeling sub-boreal forest canopy bulk density in Minnesota, USA, using synthetic aperture radar and optical satellite sensor data

Fig. 6

Skewness and kurtosis measures (both unitless) of frequency distribution shape for respective estimates of fuel density (labeled dots). Shape statistics for total fuel density (TFD) and canopy bulk density (CBD) based on weighted canopy gap fraction are denoted T and C, respectively, while numbers 1, 12, and 123 refer to zenith angle ranges (0 to 7°, 0 to 23°, and 0 to 38°, respectively) of the LAI-2200C instrument. Shape statistics for FuelCalc-based estimates of CBD are denoted as FC, while LANDFIRE CBD is denoted LF. Dashed lines indicate zones of relative normality for the respective shape metrics. Field data for these analyses were collected in 2015 and 2016 and combined with satellite sensor data to calibrate models for mapping fuel density across the Superior National Forest, Minnesota, USA

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