Variation Characteristics of the Main Hydrochemical Indexes in Typical Subterranean Rivers in the South China Karst Region Based on Curve Fitting

Table 5

Comparison of the main indexes in the Banzhai subterranean river basin (mg.L^-1).

Sampling sites	Indexes
	K^+	Na^+	Ca^2+	Mg^2+
ML-1 (2015)	0.15	0.21	72.00	12.83	256.20	7.55
ML-2 (2015)	1.57	0.69	64.00	15.39	256.20	7.71
ML-3 (2015)	1.20	0.35	64.00	26.54	286.70	7.85
ML-4 (2015)	0.73	0.71	62.00	21.09	244.00	8.69
ML-5 (2015)	0.62	0.39	58.00	18.30	237.90	7.59
ML-6 (2015)	0.44	0.30	58.00	19.73	250.10	8.03
Average of ML-1~ ML-6	0.79	0.44	63.00	18.98	261.46	7.90
Max of Reference [16]	1.60	1.80	86.00	57.19	274.50	13.64