Mapping Agricultural Frozen Soil on the Watershed Scale Using Remote Sensing Data

Table 5

Classification results of six selected RADARSAT-1 SAR images compared with soil temperature measurements at the 12 training/validation study fields, by land use.

		Classification results
		Frozen	Unfrozen	Total	Success (%)	Omission (%)
Tilled fields
Ground observations	Frozen	17	3	20	85	15
	Unfrozen	1	15	16	94	6
	Total	18	18	36	89
	Commission (%)	6	17		Kappa = 0.78
Untilled fields
Ground observations	Frozen	16	2	18	89	11
	Unfrozen	1	17	18	94	6
	Total	17	19	36	92
	Commission (%)	6	11		Kappa = 0.83