Spatial Heterogeneity of Coupling Coordination Development between Logistics and Economy in Central Plains of China

Table 1

Grading criteria for coupling coordination.

Coupling coordination	Coupling coordination level	Coupling coordination	Coupling coordination level
0 ≤ D ≤ 0.1	Extreme disorder	0.5 < D ≤ 0.6	Barely coordinated
0.1 < D ≤ 0.2	Severe disorders	0.6 < D ≤ 0.7	Primary coordination
0.2 < D ≤ 0.3	Moderate disorder	0.7 < D ≤ 0.8	Intermediate coordination
0.3 < D ≤ 0.4	Mild disorders	0.8 < D ≤ 0.9	Good coordination
0.4 < D ≤ 0.5	On the verge of disorder	0.9 < D ≤ 1	Quality coordination