Table 2 Grade classification of CCD.

From: The tight balance state and mechanism of disaster-resilient resources in karst small towns: a Chinese karst landform case study

Coupling coordination degree

Classification results

High coordination

0.65 ≤ D ≤ 1.000

Moderate coordination

0.55 ≤ D < 0.65

Low coordination

0.45 ≤ D < 0.55

Mild dissonance

0.35 ≤ D < 0.45

Moderate dissonance

D < 0.35