Table 3 Predicted post-fire tree probability of mortality equations for use in pre-fire planning (i.e., only crown scorch and DBH are potential variables). CLS = crown length scorched (%); CVS = crown volume scorched (%); DBH = diameter at breast height (cm).
Species | Predicted probability of mortality equation |
|---|---|
White fir | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - ( - 3{.}5083 + (CLS \times 0{.}0956) - (CL{S^2} \times 0{.}00184) + (CL{S^3} \times 0{.}000017)))}}]}}\) |
Subalpine fir | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - ( - 1{.}6950 + (CVS \times 0{.}2071) - (CV{S^2} \times 0{.}0047) + (CV{S^3} \times 0{.}000035)))}}]}}\) |
Red fir | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - ( - 2{.}3085 + (CL{S^3} \times 0{.}000004059)))}}]}}\) |
Incense cedar | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - ( - 4{.}2466 + (CL{S^3} \times 0{.}000007172)))}}]}}\) |
Western larch | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - ( - 1{.}6594 + (CVS \times 0{.}0327) - (DBH \times 0{.}0489)))}}]}}\) |
Whitebark pine and lodgepole pine | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - ( - 0{.}3268 + (CVS \times 0{.}1387) - (CV{S^2} \times 0{.}0033) + (CV{S^3} \times 0{.}000025) - (DBH \times 0{.}0266)))}}]}}\) |
Engelmann spruce | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - (0{.}0845 + (CVS \times 0{.}0445)))}}]}}\) |
Sugar pine | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - ( - 2{.}0588 + (CL{S^2} \times 0{.}000814)))}}]}}\) |
Ponderosa pines and Jeffrey pine | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - ( - 2{.}7103 + (CV{S^3} \times 0{.}000004093)))}}]}}\) |
Douglas-fir | \({P_{\rm{m}}} = {1 \over {[1 + {e^{( - ( - 2{.}0346 + (CVS \times 0{.}0906) - (CV{S^2} \times 0{.}0022) + (CV{S^3} \times 0{.}000019)))}}]}}\) |