Table 2.

Evaluation index system of ecological environment quality in the Yellow River basin.

Dimension	Criterion	Specific index	Unit	Type	Weight
Ecological environment construction index	Self-purification of ecological environment	Total water resources	100 million m3	+	0.004
		Annual rainfall 38	ml	+	0.032
		Annual average temperature	°C	+	0.049
		Annual sunshine hours	hour	+	0.035
		Per capita green area 39	m2/person	+	0.013
	Ecological environment governance	Industrial sulfur dioxide removal	10,000 tons	+	0.015
		Industrial dust removal	10,000 tons	+	0.007
		Industrial wastewater discharge reaches scalar	10,000 tons	+	0.015
		Comprehensive utilisation rate of industrial solid waste	%	+	0.050
		Urban domestic sewage treatment rate	%	+	0.053
		Harmless treatment rate of domestic waste	%	+	0.061
		Proportion of environmental protection and water conservancy management personnel	%	+	0.016
		Output value of products of comprehensive utilisation of three waste types	10,000 yuan	+	0.010
Ecological environment damage index	Water resource consume	Ecological water consumption	100 million m3	－	0.062
		Domestic water consumption	100 million m3	－	0.066
		Production water consumption 40	100 million m3	－	0.050
	Air pollution	PM2.5 concentration	micrograms / m3	－	0.041
		Industrial NOx emissions	10,000 tons	－	0.061
		Industrial sulphur dioxide emissions	10,000 tons	－	0.058
		Industrial smoke emission	10,000 tons	－	0.063
	Water pollution	Industrial wastewater discharge	10,000 tons	－	0.061
		Domestic wastewater discharge	10,000 tons	－	0.060
	Solid pollution	Production of industrial solid waste	10,000 tons	－	0.060
		Domestic waste removal volume	10,000 tons	－	0.058