Main causes

Fréquency

%

Rank

Increasing of dry spell length

224

55.4

1

Erratic rainfall

43

10.6

3

Agricultural pressure

102

25.2

2

Abandonment of tradition

6

1.5

5

Livestock pressure

17

4.2

4

Land degradation

6

1.5

5

Late bush fires

5

1.2

6

Herbicide

1

0.2

7