The linear regression analysis of NDVI variations in the Yellow River from 1998 to 2015
| NDVI variance tread | Area (km2) | Proportion (%) | NDVI variance tread | Area (km2) | Proportion (%) |
|---|---|---|---|---|---|
| Slope < –0.05 | 1 | 0.00 | 0 ≤ Slope < 0.01 | 531,848 | 64.69 |
| –0.05 < Slope < –0.04 | 3 | 0.00 | 0.01 ≤ Slope < 0.02 | 180,071 | 21.90 |
| –0.04 ≤ Slope < –0.03 | 18 | 0.00 | 0.02 ≤ Slope < 0.03 | 8635 | 1.05 |
| –0.03 ≤ Slope < –0.02 | 644 | 0.08 | 0.03 ≤ Slope < 0.04 | 415 | 0.05 |
| –0.02 ≤ Slope < –0.01 | 6,268 | 0.76 | Slope ≥ 0.04 | 22 | 0.00 |
| –0.01 ≤ Slope < 0 | 94,252 | 11.46 | |||
| Total | 101,186 | 12.3 | 720,991 | 87.7 |
| NDVI variance tread | Area (km2) | Proportion (%) | NDVI variance tread | Area (km2) | Proportion (%) |
|---|---|---|---|---|---|
| Slope < –0.05 | 1 | 0.00 | 0 ≤ Slope < 0.01 | 531,848 | 64.69 |
| –0.05 < Slope < –0.04 | 3 | 0.00 | 0.01 ≤ Slope < 0.02 | 180,071 | 21.90 |
| –0.04 ≤ Slope < –0.03 | 18 | 0.00 | 0.02 ≤ Slope < 0.03 | 8635 | 1.05 |
| –0.03 ≤ Slope < –0.02 | 644 | 0.08 | 0.03 ≤ Slope < 0.04 | 415 | 0.05 |
| –0.02 ≤ Slope < –0.01 | 6,268 | 0.76 | Slope ≥ 0.04 | 22 | 0.00 |
| –0.01 ≤ Slope < 0 | 94,252 | 11.46 | |||
| Total | 101,186 | 12.3 | 720,991 | 87.7 |
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