Grey correlation analysis of city resources carrying capacity of Liaoning province in the process of urbanization

Overload: the actual resources carrying Population (P) is greater than the synthetic carrying capacity (Cs), P-Cs > 0;

The Surplus state: the actual resources carrying population (P) is less than the synthetic carrying capacity (Cs), P-Cs < 0;

The critical state: the actual resources carrying population (P) is equal to the synthetic carrying capacity (Cs), where P-Cs = 0.