| Table 5. The parameter estimates of the compiled biomass models for pine, spruce and birch (ln(kg)). dbh is diameter at breast height (cm) and h is tree height (m). The standard error is given in parentheses. | |||||||||||||||
| Variable | Stem, kg | Living branches, kg | Dead branches, kg | Foliage, kg | Total above-ground, kg | ||||||||||
| Pine | Spruce | Birch | Pine | Spruce | Birch | Pine | Spruce | Birch | Pine | Spruce | Birch | Pine | Spruce | Birch | |
| Intercept |
–3.010 (0.046) |
–2.669 (0.067) |
–4.879 (0.080) |
–2.949 (0.221) |
–3.390 (0.203) |
–4.190 (0.188) |
–8.323 (0.254) |
0.485 (1.690) |
–8.905 (0.524) |
1.850 (0.667) |
–2.924 (0.149) |
–5.551 (0.434) |
–2.274 (0.052) |
–1.626 (0.092) |
–4.074 (0.073) |
| dbh/(dbh + n) |
7.999 (0.247) |
10.482 (0.150) |
8.037 (0.285) |
15.444 (0.649) |
12.228 (1.484) |
11.826 (0.733) |
–13.888 (3.195) |
9.635 (0.781) |
12.504 (0.538) |
8.464 (0.330) |
8.584 (0.793) |
9.302 (0.325) |
10.093 (0.213) |
7.970 (0.288) |
|
| h/(h + m) |
2.959 (0.385) |
22.614 (1.181) |
–6.350 (0.773) |
–3.834 (1.840) |
–3.939 (1.167 |
16.150 (0.585) |
21.131 (2.812) |
–10.624 (1.105) |
0.933 (0.540) |
16.922 (2.143) |
|||||
| ln(h) |
–4.003 (0.366) |
–3.210 (0.448) |
|||||||||||||
| n | 8 | 10 | 2 | 9 | 8 | 6 | 1 | 5 | 5 | 8 | 5 | 9 | 11 | 3 | |
| m | 13 | 12 | 4 | 8 | 10 | 8 | 8 | 1 | 16 | 10 | |||||
| var(uk) | 0.003 | 0.010 | 0.001 | 0.005 | 0.059 | 0.011 | 0.051 | 0.000 | 0.000 | 0.023 | 0.027 | 0.120 | 0.002 | 0.020 | 0.002 |
| var(eki) | 0.018 | 0.020 | 0.016 | 0.131 | 0.093 | 0.105 | 0.401 | 1.012 | 0.693 | 0.105 | 0.113 | 0.126 | 0.030 | 0.039 | 0.018 |