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Relative effectiveness index of PAs in China in alleviating population pressure under the SSP scenarios.
| SSPs Scenario | Number of PAs | Index (Negative, %) | Index (Positive, %) | Relative Validity (Average) |
|---|---|---|---|---|
| SSP1 | 670 | 74.03 | 25.97 | −0.076 |
| SSP2 | 670 | 76.72 | 23.28 | −0.054 |
| SSP3 | 670 | 79.55 | 20.46 | −0.031 |
| SSP4 | 670 | 76.12 | 23.88 | −0.087 |
| SSP5 | 670 | 74.03 | 25.97 | −0.076 |
