Research Article

Research on the Degree of Coupling between the Urban Public Infrastructure System and the Urban Economic, Social, and Environmental System: A Case Study in Beijing, China

Table 19

Influence of 12 indicators of urban economic social and environmental system on coupling coordination degree.

Indicator layerLinear regression equationSort

S11: regional GDP actual value0.9501
S12: the proportion of the tertiary industry0.241ā€‰
S13: actual utilization of foreign direct investment0.7795
S14: fixed assets investment ratio0.6698
S21: per capita household disposable income0.8183
S22: per capita consumption expenditure0.7854
S23: number of employees in three industries0.9782
S24: urbanization rate0.9347
S31: annual average of inhalable particles0.7839
S32: total wastewater discharge0.8606
S33: general industrial solid waste production0.195ā€‰
S34: sulfur dioxide emissions0.476ā€‰

Y represents the coupling coordination degree D, and x represents the corresponding evaluation indicator of the urban economic, social, and environmental system in the table.