Table 1. Main attributes of leaf traits (90 individuals) and environmental variables.
| Variables | Mean | SE | Minimum | Maximum | CV (%) |
|---|---|---|---|---|---|
| Elevation (m) | 1700 | 36.63 | 1252 | 2303 | – |
| Longitude (°) | – | – | 106.68233 | 113.50182 | – |
| Latitude (°) | – | – | 34.04959 | 37.13302 | – |
| MAT (°C) | 6.67 | 0.22 | 4.10 | 10.30 | 27 |
| MAP (mm) | 636.80 | 11.29 | 554.00 | 889.00 | 15 |
| TSN (mg·g−1) | 2.48 | 0.22 | 0.90 | 9.60 | 71 |
| TSK (mg·g−1) | 19.57 | 0.31 | 14.10 | 25.90 | 13 |
| TSP (mg·g−1) | 0.52 | 0.02 | 0.20 | 1.30 | 39 |
| SLA (cm2·g−1) | 13.81 | 0.43 | 7.50 | 28.40 | 27 |
| LS (cm2·leaf−1) | 35.82 | 1.35 | 19.50 | 72.40 | 28 |
| LDW (g·leaf−1) | 2.70 | 0.20 | 2.70 | 10.20 | 30 |
| Nmass (mg·g−1) | 23.59 | 0.41 | 17.60 | 33.70 | 15 |
| Narea (g·m−2) | 1.79 | 0.05 | 1.00 | 3.10 | 22 |
| Leaf N:P ratio | 21.78 | 0.54 | 13.15 | 41.76 | 21 |
Abbreviations: mean annual temperature, MAT; mean annual precipitation, MAP; total soil nitrogen, TSN; total soil potassium, TSK; total soil phosphorus, TSP; specific leaf area, SLA; leaf size, LS; leaf dry weight, LDW; leaf nitrogen per unit mass, Nmass; leaf nitrogen per unit area, Narea; standard error, SE; the coefficient of variation, CV.