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Table 4 Results of a pair-wise ranking of factors considered threats to P. thonningii and their degrees of destructive effects

From: Ethnobotany of an indigenous tree Piliostigma thonningii (Schumach.) Milne-Redh. (Fabaceae) in the arid and semi-arid areas of South Omo Zone, southern Ethiopia

Threatening factors

Respondents of each Kebele

K1

K2

C1

C2

G1

G2

D1

D2

U1

U2

Ky1

Ky2

Total

Rank

Firewood

4

4

4

4

5

4

4

4

5

5

4

5

52

2

Agricultural expansion

5

5

5

5

4

5

4

5

4

4

5

4

55

1

Overgrazing

2

2

3

1

3

2

1

2

2

2

2

3

25

4

Fencing

3

2

2

3

2

3

2

3

3

1

3

2

29

3

Household and Farm materials

1

1

1

2

2

1

0

1

1

2

2

1

15

5

Charcoal

0

0

1

0

1

1

1

0

0

0

0

0

4

6

  1. NB: K Kako, C Cali, G Goldiya, D Dimeka zuriya, U Eriya Umbule, Ky Eriya Kayisa