Site code | Latitude (N) | Longitude (E) | Number of trees/cores | Elevation (m) | Aspect | Slope | Maximum tree-age | The rate of absent rings (%) |
---|---|---|---|---|---|---|---|---|
BYH | 44.44° | 118.85° | 21/42 | ~1530 | NW | 30° | 224 (1791–2014) | 0.24 |
QMG | 44.20° | 118.77° | 20/40 | ~1310 | NW | 25° | 102 (1913–2014) | 0.36 |
Statistic | BYH | QMG | SGH |
---|---|---|---|
Standard deviation (SD) | 0.35 | 0.38 | 0.35 |
Mean sensitivity (MS) | 0.33 | 0.30 | 0.32 |
First-order autocorrelation (AC1) | 0.46 | 0.60 | 0.44 |
Interseries correlation (trees) | 0.40 | 0.47 | 0.33 |
Interseries correlation (all series) | 0.41 | 0.48 | 0.34 |
Mean within-tree correlation | 0.82 | 0.70 | 0.79 |
Signal-to-noise ratio (SNR) | 19.95 | 17.81 | 25.14 |
Expressed population signal (EPS) | 0.95 | 0.95 | 0.96 |
The first principal component (PC#1) | 0.44 | 0.52 | 0.37 |
Original ( | ||||||||
---|---|---|---|---|---|---|---|---|
Annual total precipitation | Annual mean temperature | |||||||
Balinzuoqi | Xiwuzhumuqinqi | Linxi | Balinzuoqi | Xiwuzhumuqinqi | Linxi | |||
Balinzuoqi | / | 0.599 Significant at Significant at | 0.638 Significant at Significant at | / | / | / | ||
Annual total precipitation | Xiwuzhumuqinqi | / | / | 0.646 Significant at Significant at | / | / | / | |
Linxi | / | / | / | / | / | / | ||
Balinzuoqi | / | / | / | / | 0.904 Significant at Significant at | 0.947 Significant at Significant at | ||
Annual mean temperature | Xiwuzhumuqinqi | / | / | / | / | / | 0.950 Significant at Significant at | |
Linxi | / | / | / | / | / | / |
Original | High-frequency | Low-frequency | |
---|---|---|---|
0.572 | 0.681 | 0.501 | |
< 0.001 | < 0.001 | < 0.001 | |
65 | 53 | 53 |