Table 2 Maximum influenced distance and weight of threat factors.
Threat factors | Maximum influence distance (km) | Relative weight | Types of spatial decline |
|---|---|---|---|
Cultivated land | 1 | 0.7 | Linear |
Urban land | 10 | 1.0 | Exponential |
Rural settlements | 5 | 0.6 | Exponential |
Other construction land | 8 | 0.7 | Exponential |
Unutilized land | 1 | 0.5 | Linear |
