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Table 1

Evaluation index system of water resources carrying capacity of Dongting Lake

Target layerCriterion layerIndex layerIndex descriptionIndex properties
Water resources carrying capacity Water resources system C1 Water resources per capita Total water resources/Total population (m³/Per) Benefit 
C2 Water production modulus Total water resources/Total area (104 m³/km²) Benefit 
C3 Rivers fluidity Annual average time of river cut off/day Cost 
C4 Annual average runoff Statistical data (m³) Benefit 
Water environment system C5 Total phosphorus TP (mg/L) Cost 
C6 Total nitrogen TN (mg/L) Cost 
C7 Chemical oxygen demand COD (mg/L) Cost 
C8 Dissolved oxygen DO (mg/L) Benefit 
Social economic system C9 Urban population density Urban population/Total area (people/km²) Cost 
C10 Urbanization rate Urban population/Total population (%) Benefit 
C11 Gross domestic product GDP statistical data (/billion yuan) Benefit 
C12 Water use for generating every 10,000 yuan in industrial value added Industrial water consumption/Industrial value-added (m³/yuan) Cost 
C13 Water use for generating every 10,000 yuan in agriculture value added Agriculture water consumption/Agriculture value-added (m³/yuan) Cost 
Target layerCriterion layerIndex layerIndex descriptionIndex properties
Water resources carrying capacity Water resources system C1 Water resources per capita Total water resources/Total population (m³/Per) Benefit 
C2 Water production modulus Total water resources/Total area (104 m³/km²) Benefit 
C3 Rivers fluidity Annual average time of river cut off/day Cost 
C4 Annual average runoff Statistical data (m³) Benefit 
Water environment system C5 Total phosphorus TP (mg/L) Cost 
C6 Total nitrogen TN (mg/L) Cost 
C7 Chemical oxygen demand COD (mg/L) Cost 
C8 Dissolved oxygen DO (mg/L) Benefit 
Social economic system C9 Urban population density Urban population/Total area (people/km²) Cost 
C10 Urbanization rate Urban population/Total population (%) Benefit 
C11 Gross domestic product GDP statistical data (/billion yuan) Benefit 
C12 Water use for generating every 10,000 yuan in industrial value added Industrial water consumption/Industrial value-added (m³/yuan) Cost 
C13 Water use for generating every 10,000 yuan in agriculture value added Agriculture water consumption/Agriculture value-added (m³/yuan) Cost 
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