Review Article

Evaluation of the Urban Low-Carbon Sustainable Development Capability Based on the TOPSIS-BP Neural Network and Grey Relational Analysis

Table 2

Index system.

SystemIndicatorVariables

Green investmentTechnology investmentR&D expenditure (100 million yuan)
Fixed assets investment in tertiary industry (100 million yuan)
Number of research and development institutions (a)
Research and experimental development staff (person)
National science and technology awards (items)
Number of patents granted (items)
Resource utilizationTotal energy consumption (10,000 tons of standard coal)
Energy consumption per 10,000 yuan of regional GDP (ton of standard coal)
Comprehensive utilization of industrial solid waste (10,000 tons)
Comprehensive utilization rate of industrial waste (%)
Total water consumption (100 million cubic meters)

Green outputEnvironmental impactAmount of industrial solid waste produced (10,000 tons)
Industrial solid waste disposal (10,000 tons)
Forest cover rate (%)
Total wastewater discharge (10,000 tons)
Industrial waste gas emissions (tons)
Economic impactGDP (100 million yuan)
Technology market turnover (100 million yuan)
Added value of tertiary industry (100 million yuan)
Reduction rate of energy consumption per 10,000 yuan of GDP (%)