Ecological factors | Evaluation standards | Classification | Evaluation value | Weights |
Slope gradient of both slopes in gullies | The smaller the slope gradient is, the higher suitability of ecological construction | <5˚ | 5 | 0.100 |
5˚ - 25˚ | 3 | |||
>25˚ | 1 | |||
Gully width | The wider the gully is , the higher suitability of ecological construction | >300 m | 5 | 0.125 |
100 m - 300 m | 3 | |||
<100 m | 1 | |||
Surface water | The better the surface water is, the higher suitability of ecological construction | Reservoir and the coverage area | 5 | 0.075 |
Rivers and springs | 3 | |||
No water areas | 1 | |||
Cultivated land per capita | The larger the cultivated land per capita is, the higher suitability of ecological construction | >3.0 mu/per | 5 | 0.100 |
1.5 - 3.0 mu/per | 3 | |||
<1.5 mu/per | 1 | |||
Population size | The larger the population size is, the higher suitability of ecological construction | >300 people | 5 | 0.100 |
100 - 300 people | 3 | |||
<100 people | 1 | |||
Transportation | The better the transportation is, the higher suitability of ecological construction | Transportation joint | 5 | 0.100 |
Transportation thoroughfares | 3 | |||
Faraway from transportation thoroughfares | 1 | |||
Village land use degrees | The higher the village land use degrees are, the higher suitability of ecological construction | >30% | 5 | 0.100 |
5% - 30% | 3 | |||
<5% | 1 | |||
Soil productivity | The better the soil productivity is, the higher suitability of ecological construction | High productivity | 5 | 0.125 |
Medium productivity | 3 | |||
Low productivity | 1 | |||
Plants diversity | The more diversity the plants are, the higher suitability of ecological construction | Dense forest zone | 5 | 0.075 |
Half forest and half tillage zone | 3 | |||
No vegetation zone | 1 | |||
Public infrastructure degrees | The higher lever the public infrastructure degrees are, the higher suitability of ecological construction | Good | 5 | 0.100 |
General | 3 | |||
Poor | 1 |