Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Classification standard of comprehensive measure of resilience of border cities in China.
| BCR value range | Classification | |
|---|---|---|
| Grade 1 | < 0.286 | Lowest resilience |
| Grade 2 | 0.287–0.323 | Lower resilience |
| Grade 3 | 0.324–0.362 | Medium resilience |
| Grade 4 | 0.363–0.409 | Higher resilience |
| Grade 5 | ≥0.410 | Highest resilience |
