Table 5 ASTER landform classes at 500 m and 2,000 m for the study area and study sites by larval Anopheles spp. and An. arabiensis presence.
LandForm | ASTER | Water Sites | Anopheles Positive | An. arabiensis Positive |
|---|---|---|---|---|
Deep streams | 1733 (8.3) | 28 (14) | 19 (13.7) | 4 (15.4) |
Shallow valleys and mid-slope drainage pathways | 952 (4.6) | 8 (4) | 4 (2.9) | 1 (3.8) |
Upland drainage areas | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
U-shaped valleys | 1976 (9.5) | 43 (21.5) | 37 (26.6) | 9 (34.6) |
Plains | 8167 (39.3) | 71 (35.5) | 42 (30.2) | 6 (23.1) |
Open slopes | 2304 (11.1) | 13 (6.5) | 9 (6.5) | 3 (11.5) |
Upper slopes and mesas | 2081 (10) | 11 (5.5) | 8 (5.8) | 0 (0) |
Local ridges and hills in large valleys | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
Mid-slope of ridges and small hills in plains | 1396 (6.7) | 20 (10) | 18 (12.9) | 3 (11.5) |
High ridges | 2168 (10.4) | 6 (3) | 2 (1.4) | 0 (0) |
Total | 20777 (100) | 200 (100) | 139 (100) | 26 (100) |