Table 2 Weight, classification and assignment criteria

NV

0.22

type I

4

type II

3

type III

2

type IV

1

D

0.11

The whole region

3

Most of the region

2

Parts of the region

1

CS

0.13

Dominant species

3

Common species

2

Rare species

1

LF

0.02

Perennial herb

3

Annual or Biennial herb

2

Woody

1

BCU

0.09

wide range

3

Less

2

Not

1

WCP

0.02

Cultivation

3

Gathering and production

2

Wild

1

T

0.04

None

2

Low

1

ET

0.13

Cross-seasonal eating

3

Single-seasonal eating

2

Short-term eating

1

EP

0.18

More than one

2

Single

1

MV

0.04

Yes

1

No

0