Table 1 WRCC evaluation index system.

From: Driving effects of spatiotemporal evolution of the water resources carrying capacity in the Yellow River BasinĀ (Henan section)

Subsystems

Indicators

Weight

Attribute

Water resources

Precipitation X1 (mm)

0.0406

 + 

Water resources per capita X2 (m3/person)

0.0420

 + 

Water production coefficient X3 (Dmnl)

0.0401

 + 

Groundwater resources per unit area X4 (104 m3/km2)

0.0449

 + 

Water supply modulus X5 (104 m3/km2)

0.0440

āˆ’

Utilization ratio of water resources X6 (%)

0.0384

āˆ’

Social

Population density X7 (person/km2)

0.0429

āˆ’

Per capita domestic water use X8 (L/day)

0.0363

āˆ’

Permanent population X9 (104 person)

0.0441

āˆ’

Per capita water use X10 (m3)

0.0372

āˆ’

Proportion of domestic water X11 (%)

0.0438

āˆ’

Urbanization rate X12 (%)

0.0457

 + 

Economic

Water use per 104 yuan industrial added value X13 (m3)

0.0443

āˆ’

Water use per 104 yuan GDP X14 (m3)

0.0437

āˆ’

Water consumption rate X15 (%)

0.0342

āˆ’

Proportion of the tertiary industry X16 (%)

0.0389

 + 

GDP per capita X17 (yuan)

0.0435

 + 

Per capita disposable income of urban residents X18 (yuan)

0.0454

 + 

Ecological environment

Ecological water use rate X19 (%)

0.0401

 + 

Sewage treatment rate X20 (%)

0.0379

 + 

Forest coverage rate X21 (%)

0.0435

 + 

Green coverage rate X22 (%)

0.0395

 + 

Wastewater discharge X23 (108 t)

0.0439

āˆ’

Fertilizer application amount X24 (t)

0.0451

āˆ’

  1. ā€œ+ā€ indicates a positive indicator and ā€œāˆ’ā€ indicates a negative indicator.