Official Journal of the Japan Wood Research Society
Table 7 Correlation coefficients between annual ring width and lumber properties in each wood type
From: Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia
Species | Wood type | n | AD | DMOE | MOE | MOR |
|---|---|---|---|---|---|---|
Pinus sylvestris | I | 19 | − 0.267 (0.269) | − 0.573 (0.010) | − 0.563 (0.012) | − 0.426 (0.069) |
II | 16 | − 0.293 (0.271) | − 0.838 (0.000) | − 0.710 (0.002) | − 0.552 (0.027) | |
III | 26 | − 0.484 (0.012) | − 0.346 (0.084) | − 0.258 (0.203) | − 0.017 (0.935) | |
Total | 61 | − 0.399 (0.001) | − 0.552 (0.000) | − 0.505 (0.000) | − 0.339 (0.008) | |
Pinus sibirica | I | 11 | − 0.407 (0.214) | − 0.129 (0.705) | − 0.201 (0.554) | − 0.249 (0.460) |
II | 10 | 0.147 (0.685) | 0.438 (0.205) | 0.312 (0.380) | − 0.170 (0.639) | |
III | 18 | − 0.214 (0.393) | − 0.155 (0.540) | − 0.190 (0.451) | − 0.113 (0.654) | |
Total | 39 | − 0.170 (0.302) | − 0.039 (0.816) | − 0.107 (0.516) | − 0.157 (0.338) | |
Picea obovata | I | 13 | − 0.198 (0.516) | − 0.348 (0.244) | − 0.198 (0.516) | − 0.397 (0.179) |
II | 18 | − 0.300 (0.212) | − 0.119 (0.640) | − 0.228 (0.362) | − 0.106 (0.676) | |
III | 36 | − 0.668 (0.000) | − 0.281 (0.097) | − 0.285 (0.092) | − 0.169 (0.325) | |
Total | 67 | − 0.360 (0.003) | − 0.294 (0.016) | − 0.276 (0.024) | − 0.204 (0.098) | |
L. sibirica | I | 13 | 0.072 (0.816) | 0.383 (0.196) | 0.204 (0.503) | 0.169 (0.581) |
II | 16 | 0.076 (0.779) | 0.163 (0.545) | 0.258 (0.336) | 0.074 (0.786) | |
III | 8 | 0.950 (0.000) | 0.536 (0.171) | 0.682 (0.063) | 0.006 (0.989) | |
Total | 37 | 0.280 (0.094) | 0.262 (0.118) | 0.297 (0.074) | 0.086 (0.612) |