Table 1.
Stepwise multiple regressions between NRE and PRE and mean annual temperature (MAT, °C), mean annual precipitation (MAP, mm), and latitude (LAT).
| Variable | Forest type | Equation | R2 | P |
|---|---|---|---|---|
| NRE | All | y = −0.002MAP + 38.151 | 0.005 | 0.057 |
| EBF | y = 1.851MAT−0.011MAP + 16.634 | 0.113 | <0.01 | |
| DBF | y = −0.825MAT − 0.010MAP + 53.388 | 0.086 | <0.01 | |
| ENF | y = 0.304MAT + 28.243 | 0.012 | 0.083 | |
| DNF | y = −0.056MAP + 90.410 | 0.369 | <0.01 | |
| MF | — | — | — | |
| BB | — | — | — | |
| PRE | All | y = −0.441MAT + 0.004MAP − 0.245LAT + 52.125 | 0.007 | 0.022 |
| EBF | — | — | — | |
| DBF | y = 0.007MAP + 38.744 | 0.009 | 0.059 | |
| ENF | y = −0.553MAT + 0.012MAP + 37.999 | 0.024 | <0.01 | |
| DNF | y = −1.283MAT + 51.529 | 0.08 | 0.056 | |
| MF | y = −0.281LAT + 47.908 | 0.019 | 0.063 | |
| BB | y = −14.150MAT − 9.215LAT + 532.443 | 0.576 | <0.01 |
NRE: nitrogen resorption efficiency, PRE: phosphorus resorption efficiency, EBF: evergreen broadleaf forest, DBF: deciduous broadleaf forest, ENF: evergreen needle-leaf forest, DNF: deciduous needle-leaf forest, MF: broadleaf and needle-leaf mixed forest, BB: bamboo forest. Linear models were significant when P < 0.05.