Relationships | Linear/non-linear | Equations | R 2 | p |
---|---|---|---|---|
Latitude-tree height | Non-linear | H = 16.80–4.83/EXP(0.35 × (Lat–45.96)^2) | 0.79 | < 0.0001 |
Latitude-total biomass | Non-linear | BM = 109.23 + 91.28/EXP(0.31 × (Lat–42.83)^2) | 0.72 | < 0.0001 |
Latitude-species richness | Linear | S = 178.85–3.18 × Lat | 0.35 | 0.0002 |
Latitude-species diversity | Linear | SppD = 139.15–2.66 × Lat | 0.66 | < 0.0001 |
Latitude-Simpson’s index of diversity | NA | NA | NA | NA |
Age-tree height | Linear | H = 1.33 + 0.20 × Age | 0.65 | < 0.0001 |
Age-total biomass | Linear | BM = −136.65 + 0.37 × Age | 0.81 | < 0.0001 |
Age-species richness | Linear | S = −19.60 + 0.87 × Age | 0.54 | < 0.0001 |
Age-species diversity | Linear | SppD = −14.60 + 0.55 × Age | 0.59 | < 0.0001 |
Age-Simpson’s index of diversity | Non-linear | SID = 0.89 + 609.65 × EXP(1–0.16 × Age) | 0.56 | < 0.0001 |
Height-total live biomass | Linear | BM = −90.60 + 16.52 × H | 0.74 | < 0.0001 |
Height-species richness | Linear | S = −4.82 + 2.90 × H | 0.39 | < 0.0001 |
Height-species diversity | Linear | SppD = −12.29 + 2.30 × H | 0.66 | < 0.0001 |
Height-Simpson’s index of diversity | Linear | SID = 0.75 + 0.0084 × H | 0.30 | 0.0006 |
Species richness-total biomass | Non-linear | BM = 237.7 6 + 330.66 × EXP(1–0.038 × S) | 0.45 | < 0.0001 |
Species diversity-total biomass | Non-linear | BM = 203.08 + 780.00 × EXP(1–0.14 × SppD)) | 0.61 | < 0.0001 |
Simpson’s index of diversity-total biomass | Linear | BM = − 510.43 + 766.18 × SID | 0.38 | < 0.0001 |