An Evaluation of River Health for the Weihe River in Shaanxi Province, China

Table 6

Sensitive analysis results for the health evaluation of the Weihe River in Shaanxi Province.

Reach	Removed indicators	Value of membership degree
		Excellent	Good	Moderate	Poor	Sick
LW	Non	0.01	0.32	0.40	0.11	0.17
	COD (mg/L)	0.01	0.32	0.40	0.11	0.17
	NH3-N (mg/L)	0.00	0.29	0.44	0.11	0.17
	Ratio of wetland area (%)	0.02	0.35	0.36	0.11	0.17
	Riparian vegetation coverage ratio (%)	0.01	0.38	0.54	0.08	0.00
	Guaranteed rate of discharge in dry flow season (%)	0.01	0.23	0.39	0.12	0.25
WX	Non	0.00	0.06	0.33	0.29	0.32
	COD (mg/L)	0.00	0.06	0.33	0.29	0.32
	NH3-N (mg/L)	0.00	0.06	0.33	0.29	0.32
	Riparian vegetation coverage ratio (%)	0.00	0.00	0.39	0.29	0.32
	Proportion of fish species (%)	0.00	0.10	0.31	0.27	0.32
	Guaranteed rate of discharge in dry flow season (%)	0.00	0.10	0.29	0.29	0.32
XL	Non	0.05	0.23	0.13	0.22	0.39
	COD (mg/L)	0.05	0.23	0.13	0.22	0.39
	NH3-N (mg/L)	0.05	0.23	0.13	0.22	0.39
	Ratio of wetland area (%)	0.00	0.24	0.16	0.22	0.38
	Riparian vegetation coverage ratio (%)	0.07	0.21	0.12	0.22	0.38
	Guaranteed rate of discharge in dry flow season (%)	0.07	0.24	0.09	0.22	0.38
	Variation rate of streambed gradient (%)	0.05	0.03	0.07	0.43	0.42
	Capacity of flood discharge (%)	0.05	0.44	0.18	0.00	0.34
LH	Non	0.00	0.27	0.10	0.33	0.30
	COD (mg/L)	0.00	0.27	0.10	0.24	0.40
	NH3-N (mg/L)	0.00	0.27	0.10	0.43	0.21
	Riparian vegetation coverage ratio (%)	0.00	0.21	0.16	0.33	0.30
	Guaranteed rate of discharge in dry flow season (%)	0.00	0.32	0.05	0.33	0.30
	Variation rate of streambed gradient (%)	0.00	0.27	0.10	0.52	0.11
	Requirement rate of bankfull discharge (%)	0.00	0.27	0.10	0.14	0.49
DH	Non	0.00	0.01	0.42	0.45	0.13
	COD (mg/L)	0.00	0.01	0.41	0.38	0.21
	NH3-N (mg/L)	0.00	0.01	0.44	0.51	0.05
	Ratio of wetland area (%)	0.00	0.01	0.57	0.34	0.08
	Guaranteed rate of discharge in dry flow season (%)	0.00	0.01	0.28	0.54	0.17
	Variation rate of streambed gradient (%)	0.00	0.02	0.68	0.18	0.13
	Requirement rate of bankfull discharge (%)	0.00	0.00	0.17	0.71	0.13