Table 1 Index system for measuring TSDPL in RBC.

From: Spatiotemporal patterns and typological differences in the development-protection nexus of resource-based cities in China

First-level indicators

Second-level indicators

Third-level indicators (unit)

Interpretation of indicators

Nature of indicators

References

Territorial space development

Land resource development

Proportion of construction land area (%)

Proportion of construction land area in total city area

 + 

19,20

Proportion of cultivated land area (%)

Proportion of cultivated land area in total city area

 + 

Density of road network (km2/km2)

Proportion of total road area in total city area at the end of the year

 + 

Population aggregation

Total population (ten thousand)

Total resident population of the city at the end of the year

 + 

15,20

Population density (person/km2)

Ratio of total resident population to total city area

 + 

Urbanization rate (%)

Proportion of urban population in total permanent resident population

 + 

Economic development

GDP (100 million yuan)

The gross national product of the city

 + 

20,36

Annual income per capita (Yuan)

Average annual salary of on-the-job workers in the city

 + 

Annual consumption per capita (Yuan)

Ratio of the total value of social consumer goods to the total resident population of the city

 + 

Proportion of secondary industry (%)

Proportion of the output value of the secondary industry in the city’s gross national product

 + 

Proportion of tertiary industry (%)

Proportion of the output value of the tertiary industry in the city’s gross national product

 + 

Resource exploitation

Proportion of employment personnel in the mining industry (%)

Proportion of employment in mining in total employment

-

/

Proportion of investment in fixed assets in the mining industry (%)

Proportion of fixed asset investment in mining in total fixed asset investment

-

Territorial space protection

Ecosystem protection

Proportion of forest area (%)

Proportion of forest area in total city area

 + 

30

Proportion of water and wetland area (%)

Proportion of water and wetland area in total city area

 + 

Green coverage rate of built-up area (%)

Proportion of the green coverage area in the built-up area to the total area of the built-up area

 + 

Pollution control

Harmless treatment rate of household garbage (%)

Proportion of harmless disposal volume of household garbage in total household garbage

 + 

25

Sewage treatment rate (%)

Proportion of sewage treatment volume in total sewage discharge

 + 

Comprehensive utilization rate of industrial solid waste (%)

Proportion of total amount of industrial solid waste utilized in total amount of industrial solid waste

 + 

Resource conservation

Energy consumption per unit of GDP (ton of standard coal/ten thousand yuan)

Ratio of total energy consumption to the city’s gross national product

-

26,30

Water consumption per unit of GDP (m3/ten thousand yuan)

Ratio of total water use to the city’s gross national product

-

Output per unit of land (ten thousand yuan/km2)

Ratio of gross national product to total city area

 + 

  1. + represents a positive indicator and - represents a negative indicator.