Table 3. Normalized score of each category and range.

Factors	Category	Mean score	Normalized score	Range
Vertical slope	Concave	0.0771	0.8905	0.9676
	Straight		−0.0551
	Convex		0.0957
	Complex		−0.0771
Cross slope	Concave	0.6657	−0.0066	0.6876
	Straight		−0.0214
	Convex		0.0219
	Complex		−0.6657
Altitude	<400 m	0.0149	−0.0149	0.2356
	401∼800 m		0.0268
	801∼1,200 m		0.1455
	1,201 m<		0.2207
Aspect	N	0.0107	0.1257	0.1364
	E		−0.0107
	S		0.0152
	W		−0.0056
Slope gradient	< 20°	0.1033	0.0126	0.1590
	21∼30°		0.0559
	31∼40°		−0.1033
	41∼50°		−0.0178
	51°<		−0.0317