3.2.3. Green Economy Efficiency

The green economy is an economic development model that maximizes resource utilization by improving development efficiency and reducing environmental pressure. According to the current situation of social, environmental and resource problems, taking into account the availability and consistency of data, the green economy efficiency index system of cities is constructed from the perspective of resource input-economic outputpollution output regarding relevant research. Based on the existing studies [14,20–22,59], we add "the number of industrial enterprises above the scale" to the labor factor level and change the previous consideration from the number of employees to the number of employees and enterprises to improve the index system. Table 1 shows the green economy efficiency measurement indicators.

#### **Table 1.** Urban green economy efficiency measurement index system.

