Table 7.

Criteria for biological habitat suitability.

Evaluation Factor	Classification	Value	Weight
Land cover	Urban and other construction lands	0	0.35
	Rural residential land	1
	Bare land	2
	Lowly covered grassland	3
	Dryland and medium covered grassland	5
	Sparse forest and waterway	6
	Shrub and highly covered grassland	7
	Closed forest, lake, reservoir, wetland	8
	Paddy filed and mudflats	10
Elevation (m)	0–100	5	0.10
	100–800	10
	800–1500	5
	>1500	1
Distance to water sources (m)	0–2000	6	0.25
	2000–7000	8
	7000–15000	10
	15000–30000	5
	>30000	2
Distance to Built–up area (m)	>6000	10	0.15
	4000–6000	5
	2000–4000	3
	0–2000	1
	0	0
Distance to road (m)	0–500	0	0.15
	500–1000	1
	1000–2000	3
	2000–4000	5
	>4000	10