Research Article
Analysis of Spatial and Temporal Distribution Characteristics of Land Desertification Based on GIS and Remote Sensing Images
Table 3
Classification system of land desertification in northern China.
| Types of desertification | Vegetation coverage | Wind erosion thickness of land (cm) | Aeolian deposition of land (cm) | Soil erosion (1/hm2·y) | Population overload rate (%) | Livestock overload rate (%) |
| Mild desertification | 40–60% | <5 | <5 | <0.5 | −50∼31 | −50∼31 |
| Moderate desertification | 25–40% | 5∼10 | 5∼10 | 0.5∼1.0 | −31∼0 | −31∼0 |
| Severe desertification | 10–25% | 10∼20 | 10∼20 | 1.0∼3.0 | 0∼31 | 0∼31 |
| Extremely severe desertification | <10% | >20 | >20 | >3.0 | >31 | >31 |
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