|
Species
|
Component
|
ai1
|
ai2
|
|---|
|
Douglas-Fir
|
Bole (i = 1)
|
− 2.9162 (0.9896)
|
2.3437 (0.2647)
|
|
Bark (i = 2)
|
− 2.0888 (0.7021)
|
1.6911 (0.1903)
|
|
Foliage (i = 3)
|
− 3.3489 (0.8356)
|
1.9822 (0.2249)
|
|
Branch (i = 4)
|
− 3.7741 (1.0634)
|
2.3588 (0.2845)
|
|
Lodgepole Pine
|
Bole (i = 1)
|
− 4.3642 (0.8611)
|
2.9255 (0.2634)
|
|
Bark (i = 2)
|
− 5.2333 (0.8573)
|
2.3723 (0.2646)
|
|
Foliage (i = 3)
|
− 2.0830 (0.6570)
|
1.5402 (0.2075)
|
|
Branch (i = 4)
|
− 1.0172 (0.9174)
|
1.5475 (0.2897)
|
|
Ponderosa Pine
|
Bole (i = 1)
|
− 2.5513 (0.8855)
|
2.2322 (0.2231)
|
|
Bark (i = 2)
|
− 3.5399 (0.9608)
|
1.9588 (0.2432)
|
|
Foliage (i = 3)
|
− 5.75806 (1.2645)
|
2.6110 (0.3168)
|
|
Branch (i = 4)
|
− 5.2127 (1.6641)
|
2.9843 (0.4149)
|
- Equations were fit using nonlinear seemingly unrelated regression to estimate component biomass (kg) from a tree’s diameter at breast height (cm). Values in parentheses are standard errors of the parameter values. Total biomass can be calculated as the sum of these four components
