Table 3. Correlations between plant temperature (Tp) in Artemisia ordosica and environmental factors.
For all dates measurements were conductes over periods of up to 30 min and normalized before correlation analysis. Larger values indicate a stronger relationship with the corresponding index. Ta and Tc had larger values than Tp.
| Parameter | Tp0 | Tp1/4 | Tp1/2 | Tp3/4 | Tp1 | Ta | Tc | V | S | RH | Hc |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Tp0 | 1.000 | 0.997 | 0.996 | 0.989 | 0.990 | 0.995 | 0.998 | -0.348 | 0.489 | -0.424 | -0.597 |
| Tp1/4 | 1.000 | 0.992 | 0.985 | 0.984 | 0.994 | 0.999 | -0.325 | 0.504 | -0.398 | -0.577 | |
| Tp2/4 | 1.000 | 0.979 | 0.976 | 0.995 | 0.994 | -0.401 | 0.587 | -0.476 | -0.549 | ||
| Tp3/4 | 1.000 | 0.979 | 0.997 | 0.989 | -0.422 | 0.566 | -0.466 | -0.520 | |||
| Tp1 | 1.000 | 0.998 | 0.993 | -0.459 | 0.619 | -0.412 | -0.498 | ||||
| Ta | 1.000 | 0.956 | -0.393 | 0.601 | -0.496 | -0.575 | |||||
| Tc | 1.000 | -0.565 | 0.475 | -0.417 | -0.592 | ||||||
| V | 1.000 | -0.220 | 0.223 | 0.124 | |||||||
| S | 1.000 | -0.300 | -0.441 | ||||||||
| RH | 1.000 | 0.899 | |||||||||
| Hc | 1.000 |
N = 143. Tp0, Tp1/4, Tp1/2, Tp3/4, Tp1: Plant temperatures at fractions from the bottom of 0,1/4, 1/2, 3/4,1 of the total plant height; Ta: Air temperature; Tc: Air temperature in the crown; V: wind speed; S: solar radiation intensity; RH: Relative humidity; Hc: Relative humidity in the crown.