Assessment of Land Cover and Land Use Change Dynamics in Kibwezi Watershed, Kenya

Table 3

Accuracy assessment MATRIX for LULC classes.

	Classification result
	LULC classes	BA	C1	C2	C3	CS	cS	oS	SG	WS	RW	Reference points	PA (%)
Ground truth	BA	17	0	0	0	0	0	0	0	0	0	17	100.0
	C1	0	65	4	2	1	0	0	0	0	0	72	91.6
	C2	0	0	9	5	0	0	0	0	0	0	14	69.2
	C3	0	0	0	15	0	0	0	0	0	0	15	68.2
	CS	0	1	0	0	26	0	0	0	0	0	27	59.1
	cS	0	0	0	0	6	67	0	0	0	0	73	93.1
	oS	0	0	0	0	8	0	50	0	0	0	58	90.9
	SG	0	3	0	0	3	5	5	85	12	0	113	92.4
	WS	0	2	0	0	0	0	0	7	136	2	147	90.1
	RW	0	0	0	0	0	0	0	0	3	8	11	80.0
	Classified points	17	71	13	22	44	72	55	92	151	10	547
	CA (%)	100.0	90.3	64.3	100.0	96.3	91.8	86.2	75.2	92.5	72.7
	Overall accuracy							87.4
	Kappa coefficient							0.85

LULC category codes: BA = built-up area; C1 = cropland (rainfed); C2 = cropland (irrigated); C3 = cropland (perennial); cS = cropshrubs/trees; cS1 = closed shrubland; oS = open shrubland; SG = shrub grassland; WS = wooded shrubland; RW = riverine woodlands.