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Table 1.

Evaluation indicator system for water security.

Object layerCriterion layerSubsystem layerIndicator layerUnit
Regional water security Healthy natural water cycle Water resources Water resources per capita (X1101) m³ 
 Precipitation (X1102) mm 
Water production modulus (X1103) 104 m³ km² 
Water resources utilization rate (X1104) 
Water environment River water quality satisfaction rate (X1201) 
Fertilizer use per unit irrigated farmland area (X1202) Kg hm−2 
Chemical oxygen demand (COD) level in water (X1203) g m−3 
Ammonia-nitrogen level in water (X1204) g m−3 
Water ecology Run-off depth (X1301) 
Ecological water requirement satisfaction rate (X1302) 
Wetland area proportion (X1303) 
Forest coverage (X1304) 
Healthy social water cycle Water supply capacity Water supply pipe length per capita (X2101) 
Water access rate (X2102) 
 Area proportion of crop affected by drought (X2103) 
Population affected by drought (X2104) 
 Effective irrigation area proportion (X2105) 
Water utilization level Total water use per capita (X2201) m³ 
Water use per 10,000 yuan of GDP (X2202) m³ 
Effective utilization coefficient of irrigated water use (X2203) – 
Water use per 10,000 yuan of added industrial output (X2204) m³ 
Sewage treatment level Sewage treatment proportion of GDP (X2301) ‰ 
Urban sewage treatment rate (X2302) 
Urban sewage reuse rate (X2303) 
Flood control capacity Economic loss caused by floods (X2401) ‰ 
Population affected by floods (X2402) 
Object layerCriterion layerSubsystem layerIndicator layerUnit
Regional water security Healthy natural water cycle Water resources Water resources per capita (X1101) m³ 
 Precipitation (X1102) mm 
Water production modulus (X1103) 104 m³ km² 
Water resources utilization rate (X1104) 
Water environment River water quality satisfaction rate (X1201) 
Fertilizer use per unit irrigated farmland area (X1202) Kg hm−2 
Chemical oxygen demand (COD) level in water (X1203) g m−3 
Ammonia-nitrogen level in water (X1204) g m−3 
Water ecology Run-off depth (X1301) 
Ecological water requirement satisfaction rate (X1302) 
Wetland area proportion (X1303) 
Forest coverage (X1304) 
Healthy social water cycle Water supply capacity Water supply pipe length per capita (X2101) 
Water access rate (X2102) 
 Area proportion of crop affected by drought (X2103) 
Population affected by drought (X2104) 
 Effective irrigation area proportion (X2105) 
Water utilization level Total water use per capita (X2201) m³ 
Water use per 10,000 yuan of GDP (X2202) m³ 
Effective utilization coefficient of irrigated water use (X2203) – 
Water use per 10,000 yuan of added industrial output (X2204) m³ 
Sewage treatment level Sewage treatment proportion of GDP (X2301) ‰ 
Urban sewage treatment rate (X2302) 
Urban sewage reuse rate (X2303) 
Flood control capacity Economic loss caused by floods (X2401) ‰ 
Population affected by floods (X2402) 
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