Table 3. Relationships among annual NDVI and average soil moisture, net radiation, specific humidity, precipitation and temperature in Xinjiang from 1981 to 2018.
| Indicator | NDVI | ||
|---|---|---|---|
| 1981–2018 | 1981–1997 | 1998–2018 | |
| 0–10 cm | 0.141 | −0.054 | 0.123 |
| 10–40 cm | 0.494** | 0.304 | 0.616** |
| 40–100 cm | 0.502** | 0.568* | 0.631** |
| 100–200 cm | 0.474** | 0.067 | 0.617** |
| Net radiation | 0.264 | 0.070 | 0.459* |
| Specific humidity | −0.217 | 0.131 | −0.417 |
| Precipitation | 0.699** | 0.727** | 0.666** |
| Temperature | 0.164 | −0.039 | 0.177 |
Notes.
*
Significant at the 0.05 level.
**
Significant at the 0.01 level.
- NDVI
- natural vegetation annual NDVI
Average Soil Moisture at 0–10 cm; 10–40 cm, Average Soil Moisture at 10–40 cm; 40–100 cm, Average Soil Moisture at 40–100 cm; 100-200 cm, Average Soil Moisture at 100–200 cm.