Table 2 Resilience evaluation index system of water resources system in the provinces along the Yellow River.

From: Resilience assessment and spatiotemporal evolution analysis of water resources system in the provinces along the Yellow River

Subsystem	Indicator	Unit	Code	Attribute	Calculation formula
Meteorology	Total precipitation	mm	A₁	+	Statistical data
	Temperature	℃	A₂	−	Statistical data
	Annual sunshine hours	h	A₃	−	Statistical data
	Average relative humidity	%	A₄	+	Statistical data
Hydrology	Total water resources	10⁸ m³	B₁	+	Statistical data
	Per capita water resources	m³/capita	B₂	+	Total water resources/permanent population
	Surface water resources	10⁸ m³	B₃	+	Statistical data
	Groundwater resources	10⁸ m³	B₄	+	Statistical data
	Flood-affected area	k hectares	B₅	−	Statistical data
	Drought-affected area	k hectares	B₆	−	Statistical data
Social economy	Per capita GDP	CNY	C₁	+	GDP/permanent population
	GDP growth rate	%	C₂	+	Statistical data
	Permanent population density	persons/km²	C₃	−	Statistical data
	Urbanization rate	%	C₄	+	Urban population/permanent population
	Proportion of secondary industry	%	C₅	+	Secondary industry/GDP
	Water resources exploitation rate	%	C₆	−	Water consumption/total water resources
	Agricultural irrigation water use	m³/ha	C₇	−	Agricultural water use/irrigation area
	Per capita water consumption	m³	C₈	−	Water consumption/permanent population
	Water consumption per 10,000 yuan GDP	m³/(10⁴ CNY)	C₉	−	GDP/water consumption
	Proportion of industrial and agricultural water use	%	C₁₀	−	Industrial and agricultural water use/total water consumption
	Proportion of investment in science and technology	%	C₁₁	+	Science and technology expenditure/fiscal expenditure
	Water resources reuse rate	%	C₁₂	+	Statistical data
Ecology	Total wastewater discharge	ton	D₁	−	Statistical data
	Proportion of investment in environmental protection	%	D₂	+	Environmental protection investment/fiscal expenditure
	Treatment capacity of industrial wastewater treatment facilities	tons/day	D₃	+	Statistical data
	Ecological water use	10⁸ m³	D₄	+	Statistical data
	Investment in industrial pollution control	10⁴ CNY	D₅	+	Statistical data
	Per capita green space area	m²/capita	D₆	+	Green space area/permanent population
	Forest coverage rate	%	D₇	+	Statistical data
Engineering	Reservoir storage	10⁸ m³	E₁	+	Statistical data
	Unconventional water resources	10⁸ m³	E₂	+	Statistical data
	Length of drainage pipelines	km	E₃	+	Statistical data
	Groundwater extraction	10⁸ m³	E₄	+	Statistical data
	Investment in water conservancy construction	10⁴ CNY	E₅	+	Statistical data

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Table 2 Resilience evaluation index system of water resources system in the provinces along the Yellow River.

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