Gap Analysis and Conservation Network for Freshwater Wetlands in Central Yangtze Ecoregion

Table 1

Grading and coding the habitat suitability factors of elevation, slope, and landuse/landcover types. Codes of habitat suitability are composed of elevation, slope, and landuse/landcover and are designed to facilitate grid-based operations in GIS. For example, the code 11125 represents an area of habitat with an elevation code of 11 (i.e., 0–20 m), a slope code of 1 (0–5°), and the landuse/landcover code of 25 (i.e., surface water).

Elevation (m)	Code	Slope	Code	Landuse/landcover type	Code
0–20	11	0–5	1	Evergreen needleleaf forest	11
20–50	12	5–10	2	Evergreen broadleaf forest	12
50–100	13	10–15	3	Deciduous needleleaf forest	13
100–200	14	15–20	4	Deciduous broadleaf forest	14
200–500	15	20–25	5	Mixed forest	15
500–1000	16	25–30	6	Closed shrub	16
1000–1500	17	30–35	7	Open shrub	17
1500–2000	18			Shrub and meadow	18
2000–2500	19			Grasslands	19
2500–3000	20			Marsh	20
>3000	21			Cropland	21
				Urbanized area	22
				Cropland/natural vegetation mosaic	23
				Sparsely vegetated area	24
				Surface water	25