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Table 1 Criteria for classification categories of the environmental variables

From: Assembly processes of moss and lichen community with snow melting at the coastal region of the Barton Peninsula, maritime Antarctic

Environmental variables

Category

1

2

3

4

5

6

7

8

9

10

Microaspect (degrees)

0~22.5, 337.5~360.0

22.5~67.5

67.5~112.5

112.5~157.5

157.5~202.5

202.5~247.5

247.5~292.5

292.5~337.5

–

–

Microaspect

N

NE

E

SE

S

SW

W

NW

–

–

Inclination (degrees)

0~5

5~10

10~15

15~20

20~25

25~30

30~35

>35

–

–

Topology

Summit

Ridge

Upper slope

Middle slope

Lower slope

Arid valley

Stream flow

Pond or wet land

–

–

Microtopolgy

Upper slope

Middle slope

Lower slope

Arid valley

–

–

–

–

–

–

Substrate

Rock

Boulder

Boulder-cobble

Cobble

Cobble-pebble

Pebble

Pebble-fine grain

Coastal sand

Fine grain

Humus

Wind exposure

Very strong

Strong

Moderate

Weak

Very weak

–

–

–

–

–

Moisture

Very arid

Arid

Moderate

Slightly wet

Wet

Very wet

Snow

   

Snow cover duration (week)

0

2

4

5

>6

–

–

–

–

–