Research Article

A Study on the Small Organic Cities in China Combining PCA and CNN

Table 1

Index E: this paper chooses various indices that correspond with the indicator.

TargetSystemIndicatorIndex
Subsystem

A: the composite index for organic cities (100%)B1: urban growth boundary system (25%)C1: material boundary subsystem (15%)D1: geology and geography (5%)E1: ratio of the area which is not suitable for construction to the total urban area
D2: natural ecology (5%)E2: ratio of the area of water to the total urban area
E3: agrarian area
D3: human intervention (5%)E4: number of urban parks
E5: area of urban protection regions
C2: space boundary subsystem (10%)D4: urban population (5%)E6: number of urban populations per unit of area of built-up regions
Land use (5%)E7: area of built-up regions
E8: area of urban construction land use per capita
B2: urban scale system (25%)C3: population scale subsystem (15%)D5: population size (5%)E9: permanent residents
E10: growth rate of urban population
E11: growth rate of permanent residents migrating from other places
D6: population structure (5%)E12: sex ratio of urban population
E13: ratio of aged population
D7: population density (5%)E14: urban population density
C4: land use scale subsystem (10%)D8: development intensity (5%)E15: ratio of the area of built-up regions to the total urban area
E16: average plot ratio of urban built-up regions
D9: main functions (5%)E17: ratio of the area of public green regions to the total urban area
E18: ratio of the area used for the industry to the total urban area
E19: ratio of the area of residential regions to the total urban area
B3: urban economic system (25%)D10: economic growth (5%)E20: GDP growth rate
E21: GDP per capita
D11: industrial structure (10%)E22: ratio of the primary industry to GDP
E23: ratio of the secondary industry to GDP
E24: ratio of the tertiary industry to GDP
D12: production process (10%)E25: energy consumption per unit of GDP
E26: water consumption per unit of GDP
B4: urban environmental system (25%)D13: artificial environment (10%)E27: conditions of the urban lifeline system
E28: ratio of green space in built-up regions
E29: ratio of centralized processing for urban domestic sewage
D14: natural environment (10%)E30: ratio of rehabilitation for degraded soil
E31: ratio of recycled water usage
E32: number of days per year when the air quality index is below 100
D15: social environment (5%)E33: urban Engel’s coefficient
E34: ratio of registered unemployed people
E35: coefficient of variance of disposable income per capita between the urban and rural regions