| Laval | Natural Suitability Index of Human Settlement Environment | |
| range | Feature description | |
| Highly suitable area | 68.70 - 85.25 | Basically not restricted by natural factors, most suitable for human life and habitation |
| More suitable area | 61.95 - 68.70 | Natural factors are less restrictive, more suitable for human life and habitation |
| General suitable area | 55.64 - 61.95 | There are certain natural restrictions, generally suitable for human life and habitation |
| Critical fitness area | 48.02 - 55.64 | Natural factors are more restrictive and generally suitable for human life and habitation |
| Unsuitable area | 19.72 - 48.02 | Limited by multiple natural factors, barely suitable for human habitation |