Table 3 Type of scoring curves, the parameters of non-linear and linear equations, and calculated weights for the minimum data set.
From: Assessment of soil quality in an arid and barren mountainous of Shandong province, China
Indicator | Scoring curve | Non-linear | Linear | Weight | ||
|---|---|---|---|---|---|---|
Mean (x0) | Slope (b) | ymax | ymin | |||
Silt | Less is better | 31.956 | 2.5 | 54.48 | 17.41 | 0.159 |
N | More is better | 0.210 | − 2.5 | 0.32 | 0.10 | 0.146 |
P | More is better | 1.077 | − 2.5 | 1.59 | 0.79 | 0.164 |
LAP | More is better | 8.088 | − 2.5 | 14.13 | 4.67 | 0.181 |
AP | More is better | 93.071 | − 2.5 | 106.72 | 72.75 | 0.158 |
Vector length | Less is better | 1.505 | 2.5 | 1.68 | 1.31 | 0.189 |
