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Characteristics analysis of environmental suitability regions of China’s CCS site selection.
| Suitability division | Class | ||||
|---|---|---|---|---|---|
| I | II | III | IV | ||
| Area (km2) | 645,206 | 586,654 | 156,616 | 620,828 | |
| NPP (10−4 kg C/m2) | Min | 0 | 0 | 0 | 0 |
| Mean | 4,046 | 2,674 | 1,791 | 1,338 | |
| Max | 15,971 | 15,123 | 4,663 | 2,339 | |
| Population density (person/km2) | Min | 0 | 0 | 0 | 0 |
| Mean | 335 | 28 | 6 | 0 | |
| Max | 68,693 | 22,161 | 4,896 | 4,454 | |
| Human activity intensity | Min | 0 | 0 | 0 | 0 |
| Mean | 6 | 0 | 0 | 0 | |
| Max | 11,779 | 5 | 1 | 0 | |
