Research Article
Evaluation of Soil Quality in Arid Western Fringes of the Nile Delta for Sustainable Agriculture
Table 6
Included soil and terrain indicators in the minimum dataset from representative indicators.
| Group | Indicator | Vector norm | Coefficient of determination | Standard normal transformation | Indicator value | Included | NDVI | Elev | Norm | NDVI | Elev |
| 1 | Sand | 2.57 | 0.18 | 0.14 | 1.00 | 0.80 | 1.00 | 2.80 | No | 1 | Silt | 1.91 | 0.10 | 0.10 | 0.74 | 0.43 | 0.74 | 1.91 | No | 1 | Clay | 2.47 | 0.17 | 0.11 | 0.96 | 0.74 | 0.96 | 2.66 | No | 1 | pH | 2.01 | 0.02 | 0.01 | 0.78 | 0.11 | 0.78 | 1.67 | No | 1 | FC | 2.52 | 0.20 | 0.14 | 0.98 | 0.90 | 0.98 | 2.86 | No | 1 | AWHC | 2.54 | 0.23 | 0.17 | 0.99 | 1.00 | 0.99 | 2.97 | Yes | 1 | BD | 2.30 | 0.02 | 0.02 | 0.89 | 0.09 | 0.89 | 1.87 | No | 1 | PD | 2.48 | 0.09 | 0.07 | 0.96 | 0.39 | 0.96 | 2.32 | No | 2 | OM | 1.36 | 0.09 | 0.02 | 0.53 | 0.38 | 0.53 | 1.43 | Yes | 3 | Slp | 1.09 | 0.00 | 0.01 | 0.42 | 0.02 | 0.42 | 0.86 | Yes | 3 | Rlf | 1.06 | 0.00 | 0.01 | 0.41 | 0.01 | 0.41 | 0.83 | No | 4 | CEC | 1.10 | 0.00 | 0.01 | 0.43 | 0.02 | 0.43 | 0.87 | Yes | 4 | CaCO3 | 1.02 | 0.00 | 0.00 | 0.40 | 0.01 | 0.40 | 0.80 | No | 5 | EC | 0.95 | 0.01 | 0.00 | 0.37 | 0.03 | 0.37 | 0.77 | Yes | 5 | ESP | 0.86 | 0.01 | 0.06 | 0.33 | 0.02 | 0.33 | 0.69 | No |
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