Parameters | Stem Count | Tree Height | Basal Area | Total Wood Volume | |||||||||
ha−1 | m | m2 ha−1 | m3 ha−1 | ||||||||||
Coeff. | St. Error | t-value | Coeff. | St. Error | t-value | Coeff. | St. Error | t-value | Coeff. | St. Error | t-value | ||
a | 3.00 | 0.40 | 7.5 | 85.5 | 1.4 | 61.5 | 472 | 42 | 11.3 | 3782 | 597 | 6.3 | |
b | Age adjustor | 0.46 | 0.04 | 10.7 | 0.090 | 0.001 | 64.0 | 0.044 | 0.002 | 20.2 | 0.029 | 0.002 | 13.7 |
c | White spruce adjustor | −0.24 | 0.01 | −17.0 | 0.035 | 0.006 | 5.8 | 0.107 | 0.016 | 6.8 | 0.25 | 0.03 | 9.6 |
d | f(DTW) exponent | 1.24 | 0.02 | 55.1 | 1.43 | 0.01 | 106.7 | 1.60 | 0.04 | 39.6 | 1.57 | 0.03 | 53.0 |
e | Stem count exponent | not applicable | −0.42 | 0.015 | -27.7 | -0.15 | 0.04 | -3.9 | 0.09 | 0.05 | 1.8 | ||
f | Pre-commercial thinning adjustor | −0.068 | 0.019 | −3.5 | −0.042 | 0.006 | −6.6 | 0.017 | 0.020 | 0.9 | 0.074 | 0.025 | 3.0 |
g | Commercial thinning adjustor | −0.58 | 0.03 | −19.2 | −0.25 | −0.02 | 16.5 | −0.50 | 0.03 | −16.4 | −0.25 | 0.05 | −5.0 |
R2 | 0.239 | 0.583 | 0.414 | 0.535 |