Table 5.
Results of a principal components analysis (PCA) regarding the variables fine root biomass of the plots (FRB), root morphological properties, annual FRP and length and surface area production, fine root turnover, and aboveground tree structure, biomass and wood production (ABWP).
| Variables | Axis 1 | Axis 2 | Axis 3 | Axis 4 |
|---|---|---|---|---|
| Eigenvalues | 0.4809 | 0.2134 | 0.166 | 0.1023 |
| FRP | 0.590 | -0.446 | 0.566 | -0.359 |
| Length production | 0.771 | 0.099 | 0.555 | -0.294 |
| Surface area production | 0.900 | 0.091 | 0.334 | -0.121 |
| Fine root turnover | 0.398 | 0.351 | 0.586 | 0.585 |
| FRB | 0.627 | -0.538 | -0.344 | -0.445 |
| RTD | -0.862 | -0.233 | 0.350 | -0.006 |
| SRA | 0.202 | 0.936 | -0.122 | -0.260 |
| SRL | -0.469 | 0.644 | -0.111 | -0.535 |
| Root N concentration | 0.935 | 0.181 | -0.003 | -0.011 |
| BA of target species | 0.542 | -0.614 | -0.499 | 0.108 |
| Tree height | 0.645 | 0.399 | -0.607 | 0.137 |
| ABWP | 0.939 | 0.129 | -0.151 | 0.270 |
High interrelations are given in bold print.