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Fire Ecology
Fig. 6 | Fire Ecology

Fig. 6

From: Retrospective analysis of burn windows for fire and fuels management: an example from the Lake Tahoe Basin, California, USA

Fig. 6

Burn window and California Air Resources (CARB) burn day annual time series with trend lines and linear regression coefficients of determination for the Lake Tahoe Basin, USA, 1999 to 2019. The solid black line represents the number of days of each year that were burn windows. The dashed line represents the number of days of each year that CARB designated as burn days. Significant increasing trends were detected in burn windows (Mann-Kendall τ = 0.438, 2-sided P = 0.008). Subsequent trend analyses of the three component variables (burn plan prescriptions, CARB burn days, preparedness level < 3) identified CARB burn days as the component variable responsible for the trend (Mann-Kendall τ = 0.616, 2-sided P ≤ 0.001). Coefficient of determination (R2) values in the figure are linear regression un-adjusted coefficients of determination

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