Estimating Salt Concentrations Based on Optimized Spectral Indices in Soils with Regional Heterogeneity

Table 3

Statistical analysis of chemical composition measurement in sampling area soil.

Field sites	Detection category	Sample sites	Max value	Min value	Mean value	SD
Ebinur Lake Basin	EC 1 : 5	57	81.30	0.07	13.38	17.76
	SOM		45.47	0.22	12.48	6.64
	PH		9.97	7.65	8.26	0.37
	SC		2115	25	514.25	598.28
Ugan-Kuqa Oasis	EC 1 : 5	49	125.50	0.34	36.60	38.16
	SOM		31.70	0.95	12.32	7.05
	PH		9.04	6.35	7.73	0.66
	SC		2352	35	545.51	626.83
Keriya Oasis	EC 1 : 5	98	30.80	0.10	8.28	6.81
	SOM		9.36	0.92	3.38	2.25
	PH		10.56	7.47	8.75	0.63
	SC		1526	15	352.11	425.33