Sampling locations	Physicochemical parameters and elements
Sampling locations	pH	EC (mS/cm)	OC (%)	Fe (mg/kg)	Zn (mg/kg)	Cu (mg/kg)	Pb (mg/kg)	Cd (mg/kg)	Mn (mg/kg)
S1	6.83	0.142	3.32	12631.00	30.11	11.71	11.70	0.60	450.35
S2	6.41	0.407	4.76	30319.00	30.56	19.30	21.41	1.30	312.78
S3	6.76	0.315	3.85	27327.00	13.10	24.71	13.02	0.57	500.83
S4	6.83	0.378	2.97	28770.00	17.66	8.34	5.70	0.50	252.30
S5	6.20	0.432	4.69	30286.00	31.78	13.72	18.41	1.60	665.60
S6	6.43	0.526	3.85	36077.00	45.00	24.90	21.23	0.70	712.90
S7	6.47	0.683	3.46	30319.00	58.61	91.80	18.07	1.26	960.21
S8	6.30	0.812	4.39	40889.00	36.34	28.90	18.42	1.61	1945.58
S9	6.18	0.875	5.08	56736.00	60.74	40.75	22.20	1.68	2449.30
S10	6.75	0.831	3.27	36578.00	37.72	28.76	13.50	1.10	1032.36
S11	6.72	0.782	3.14	21814.00	31.50	28.37	8.01	0.70	574.80
S12	6.14	0.894	4.75	31910.00	37.22	28.20	13.81	1.34	1343.54
S13	6.25	0.647	4.39	20293.00	26.91	16.70	8.13	1.20	434.31
S14	5.76	1.128	5.34	125516.00	288.80	2121.70	40.10	3.08	706.81
S15	5.85	0.984	5.12	36786.00	68.50	94.70	24.68	2.30	586.24
S16	6.12	0.817	3.63	30586.00	28.37	42.23	11.40	1.41	446.30
S17	6.48	0.685	4.07	13237.00	9.20	2.00	4.80	1.24	468.71
Minimum	5.76	0.142	2.97	12631.00	9.20	2.00	4.80	0.50	252.30
Maximum	6.83	1.128	5.34	125516.00	288.80	2121.70	40.10	3.08	2449.30
Mean	6.38	0.667	4.12	35886.71	50.13	154.49	16.14	1.30	814.20
Median	6.41	0.685	4.07	30319.00	31.80	28.00	13.80	1.24	586.20
^aSD	0.33	0.264	0.76	25311.42	63.54	507.58	8.60	0.66	594.41
Skewness	−0.23	−0.317	0.056	3.04	3.70	4.11	1.23	1.26	1.83
Kurtosis	−0.68	−0.526	−1.331	10.85	14.51	16.90	2.61	2.28	2.99
^bTEC	―	―	―	―	121.00	31.60	35.80	0.99	―
^bPEC	―	―	―	―	459.00	149.00	128.00	4.98	―