Table 2. Explanatory models of aboveground biomass.
| MODELS | GLS (Only environment) | GLS (environment + space) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| a | b | c | α | β | AIC | RSE | a | b | c | α | β | AIC | RSE | |
| Water availability | ||||||||||||||
| α (WA)β | - | - | - | 1.920 | 0.307 | 527.8 | 0.896 | - | - | - | 1.883 | 0.324 | 513.2 | 0.914 |
| a (WA)2 + b(WA) | -0.380 | 2.172 | - | - | - | 482.2 | 0.800 | -0.370 | 2.137 | - | - | - | 473.0 | 0.818 |
| b(WA) + c | - | 0.312 | 1.634 | - | - | 559.3 | 0.953 | - | 0.340 | -0.032 | - | - | 542.3 | 0.971 |
| b(AP) + c | - | 0.270 | 2.140 | - | - | 564.5 | 0.965 | - | 0.296 | -0.033 | - | - | 547.6 | 0.985 |
| b(PV) + c | - | -0.589 | 2.140 | - | - | 495.1 | 0.810 | - | -0.594 | -0.016 | - | - | 485.0 | 0.829 |
| Environmental energy | ||||||||||||||
| a (AMT)2 + b(AMT) | 1.285 | 1.023 | - | - | - | 791.6 | 1.733 | 1.201 | 1.052 | - | - | - | 731.0 | 1.668 |
| b(AMT) + c | - | -0.208 | 2.140 | - | - | 570.7 | 0.981 | - | -0.233 | -0.019 | - | - | 553.8 | 1.000 |
| a (AET)2 + b(AET) | 0.545 | 0.997 | - | - | - | 866.7 | 2.092 | 0.542 | 1.019 | - | - | - | 793.0 | 1.982 |
| b(AET) + c | - | 0.360 | 2.140 | - | - | 552.0 | 0.935 | - | 0.359 | -0.024 | - | - | 538.7 | 0.958 |
| Stand variables | ||||||||||||||
| b(BA) + c | - | 0.923 | 2.140 | - | - | 200.3 | 0.385 | - | 0.955 | -0.018 | - | - | 165.1 | 0.404 |
| b(WDBA) + c | - | 0.058 | 2.140 | - | - | 578.8 | 1.001 | - | 0.072 | -0.030 | - | - | 562.4 | 1.024 |
| b(Nind) + c | - | 0.623 | 2.140 | - | - | 482.1 | 0.784 | - | 0.614 | -0.021 | - | - | 466.2 | 0.794 |
WA: Water availability; AP: Annual precipitation; PV: Precipitation variability; AMT: Annual mean temperature; AET: Actual evapotranspiration; BA = Basal area; Nind: Individual density; WDAB = Wood density weighted by basal area. AIC = Akaike information criteria. RSE = Residual sum error. The best model based on AIC is bolded.