Estimation Model of Soil Freeze-Thaw Erosion in Silingco Watershed Wetland of Northern Tibet

Table 2

Error matrix of the quantity of FT erosion.

	FT erosion results being evaluated
	Severe erosion	Intensive erosion	Moderate erosion	Mild erosion	Slight erosion	Sum
Level of sampling point
Severe erosion	5	1	2	1	1	10
Intensive erosion	0	23	3	5	9	40
Moderate erosion	3	2	27	4	5	41
Mild erosion	2	0	4	16	6	28
Slight erosion	1	3	7	1	121	133
Sum	11	29	43	27	142	252