Table 1 UIR evaluation index system.

From: Recognizing resilience evolution and connectivity in the Yangtze River Delta urban agglomeration

Criterion layer

Dimensions

Index layer

Index attribute

Sources

Pressure

Natural pressure

X1 High temperature days

-

38

39

40

X2 Low temperature days

-

X3 Torrential rain days

-

X4 Days above strong gale

-

X5 PM2.5

-

Human pressure

X6 Population density

-

17

32

41

42

43

44

45

X7 Per capita daily domestic water consumption

-

X8 Industrial electricity consumption

-

X9 Residential power consumption

-

X10 Industrial waste gas emission (SO2)

-

X11 Discharge amount of industrial wastewater

-

X12 Industrial smoke and dust emissions

-

State

Water supply and drainage

X13 Density of water supply pipelines

+

46

47

X14 Density of sewerage pipelines

+

X15 Water supply penetration rate

+

Transportation

X16 Road area per capita

+

48

49

X17 Road network density

+

X18 Number of public buses (electric vehicles)

+

Energy supply

X19 Total natural gas supply

+

50

51

X20 Total liquefied petroleum gas supply

+

X21 Gas penetration rate

+

Telecommunication

X22 Mobile phone penetration rate

+

18

X23 Number of internet broadband users per 100 people

+

X24 Per capita telecommunications revenue

+

Response

Environmental protection

X25 Sewage treatment rate

+

45

52

53

X26 Harmless treatment rate of domestic garbage

+

X27 Comprehensive utilization rate of general industrial solid waste

+

X28 Parkland area per capita

+

Financial support capacity

X29 General public budget revenue

+

54

55

56

X30 Investment in public facility construction

+

Technology and education

X31 Expenditure for Science and Technology

+

32

54

57

X32 Number of patents

+

X33 Number of general secondary schools

+

Medical response capacity

X34 Number of hospitals

+

56

58

59

X35 Number of hospital beds

+

X36 Number of doctors (assistants)

+