Table 1.
List of abbreviations and definitions of tree‐ring traits and climatic variables presented in this study.
| Variable name | Unit | Description |
|---|---|---|
| Tree‐ring traits | ||
| Wood traits | ||
| RW | mm | Ring width |
| BAI | mm2 | Basal area increment (growth performance in this study) |
| WD | kg·m−3 | Wood density |
| CWT | µm | Cell wall thickness |
| LD | µm | Average lumen diameter |
| CWR | unitless | Average conduit wall reinforcement |
| LDr | µm | Radial lumen diameter |
| CWRr | unitless | Radial conduit wall reinforcement |
| Drought‐resilience traits | ||
| Rs | unitless | Resistance of a tree in response to a periodic drought |
| Rc | unitless | Recovery of a tree in response to a periodic drought |
| Rl | unitless | Resilience of a tree in response to a periodic drought |
| Rr | unitless | Relative resilience of a tree in response to a periodic drought |
| Climate sensitivity traits | ||
| CORX – Y ( t ) | unitless | Climate sensitivity traits used in this study. Coefficient of correlation between a wood trait X and a climatic variable in month Y (month of the previous year and the contemporaneous year being labelled (t − 1) and (t), respectively) |
| Climatic variables | ||
| ADD | days | Number of days in the year when the daily precipitation is < 0.2 mm |
| MAT | °C | Mean annual temperature |
| MAP | mm | Mean annual precipitation |
| SMI | % | Soil moisture index |
| Summer_SMI | % | Summer mean (June, July, August) of the soil moisture index |
| T min | °C | Minimum monthly‐based temperature |
| T max | °C | Maximum monthly‐based temperature |