| Variable name | Variable meaning | Variable value meaning | Data Sources |
| GDP | Gross domestic product | T indicates that the regional GDP growth rate is quite high and the economy is improving. | The nominal value of the gross regional product comes from the Gross Regional Product in Chapter 3 National Accounts of the China Statistical Yearbook 2002-2021. Taking 2001 as the base period, the actual and actual growth rates of the annual GDP of each province and city are calculated by using the GDP index. |
| EC | Energy consumption control | T indicates that the growth rate of energy consumption has declined and the control of energy consumption has been improved. | The regional energy consumption data comes from the energy consumption by region and variety in Chapter 4 Energy Consumption of China Energy Statistical Yearbook 2002-2020. By calculating the annual data change rate to indicate the energy consumption control strength. |
| EC2 | Energy consumption growth | T indicates that the growth rate of energy consumption has increased, and the control of energy consumption has decreased. | The regional energy consumption data comes from Energy Consumption by Region in Chapter 4 Energy Consumption of China Energy Statistical Yearbook 2002-2020. The energy consumption growth is represented by calculating the annual rate of change in data. |
| FDI | Foreign direct investment growth | T means that the growth rate of FDI has increased, and the local government has strengthened the introduction of FDI. | The data on the total amount of foreign direct investment in each province is taken from Wind Information. The growth rate of trauma investment is represented by calculating the annual data change rate. |
| Water | Regional (industrial) wastewater discharge control efforts | T indicates that the growth rate of (industrial) wastewater discharge has decreased, and the control of water environmental protection has increased. | The regional (industrial) wastewater discharge data comes from the discharge of main pollutants in wastewater by region in Chapter 8 Resources and Environment of China Statistical Yearbook 2002-2021. Region). Changes in wastewater discharge are represented by calculating the annual rate of data change. |
| SO2 | (Industrial) Sulfur Dioxide Emission Control in Exhaust Gas | T means that the growth rate of (industrial) sulfur dioxide emissions has decreased, and air protection control has improved. | The emission data of sulfur dioxide in regional (industrial) exhaust gas is taken from the emission of main pollutants in main urban exhaust gas in Chapter 8 Resources and Environment of “China Statistical Yearbook 2002-2021” (8 - 13 Main Pollutant Emission in Waste Gas in Main Cities). Changes in sulfur dioxide emissions are represented by calculating the annual rate of change in data. |
| Solid | (General) Control of Industrial Solid Waste Generation | T means that the growth rate of (industrial) solid waste emissions has decreased, and environmental protection control has increased. | The data on regional (general) industrial solid waste generation are taken from Chapter 8 Resources and Environment of the China Statistical Yearbook 2002-2021, in which chapter the treatment and utilization of solid waste by region (8 - 15 Disposal and Utilization of Industrial Solid Wastes in Main Cities. Changes in solid waste emissions are represented by calculating the annual rate of change in data. |