Table 4 Criteria used to determine the degree of degradation types
From: Assessment of land degradation and implications on agricultural land in Qalyubia Governorate, Egypt
Critical/hazard type | Indicator | Unit | Class | |||
|---|---|---|---|---|---|---|
Low | Moderate | High | Very high | |||
Salinization | EC | dS/m | 4 | 4–8 | 8–16 | > 16 |
Alkalization | ESP | % | 10 | 10–15 | 15–30 | > 30 |
Compaction | Bulk density | g/Cm3 | 1.2 | 1.2–1.4 | 1.4–1.6 | > 1.6 |
Water logging | Water table | Cm | 150 | 150–100 | 100–50 | < 50 |