Characteristics1 | N2 | %3 | Characteristics1 | N2 | %3 |
---|---|---|---|---|---|
The types of breeding site | Â | Â | Algae | Â | Â |
river fringe | 9 | 7.4 | yes | 107 | 88.4 |
pond (> 50 m2) | 44 | 36.4 | no | 14 | 11.6 |
Puddle(< 50 m2) | 51 | 42.1 | pH | Â | Â |
irrigation/drainage ditch | 12 | 9.9 | < 8 | 23 | 19.0 |
temporary ground pool | 5 | 4.2 | 8~9 | 60 | 49.6 |
Perimeter | Â | Â | 9~10 | 37 | 30.6 |
< 10 m | 15 | 12.4 | > 10 | 1 | 0.8 |
10~100 m | 79 | 65.3 | COD | Â | Â |
> 100 m | 27 | 22.3 | < 1 mg/l | 24 | 19.8 |
Distance to the nearest house | Â | Â | 1~2 mg/l | 37 | 30.6 |
< 10 m | 50 | 41.3 | 2~3 mg/l | 47 | 38.8 |
10~60 m | 66 | 54.5 | > 3 mg/l | 13 | 10.8 |
> 60 m | 5 | 4.2 | Ammonia nitrogen | Â | Â |
Substrate types | Â | Â | < 0.3 mg/l | 37 | 30.6 |
muddy | 87 | 71.9 | 0.3~0.4 mg/l | 26 | 21.5 |
sandy (gravel with soil) | 30 | 24.8 | 0.4~0.5 mg/l | 33 | 27.3 |
cinder | 4 | 3.3 | > 0.5 mg/l | 25 | 20.6 |
Canopy | Â | Â | Sulphate | Â | Â |
yes | 36 | 29.8 | < 150 mg/l | 52 | 43.0 |
no | 85 | 70.2 | 150~200 mg/l | 10 | 8.3 |
Debris | Â | Â | 200~250 mg/l | 22 | 18.2 |
yes | 50 | 41.3 | > 250 mg/l | 37 | 30.5 |
no | 71 | 58.7 | Chloride | Â | Â |
The stability of mosquito larval breeding sites | Â | Â | < 15 mg/l | 26 | 21.5 |
temporary | 99 | 81.8 | 15~30 mg/l | 57 | 47.1 |
permanent | 22 | 18.2 | 30~45 mg/l | 35 | 28.9 |
Turbidity | Â | Â | > 45 mg/l | 3 | 2.5 |
≤3.0 (clear) | 64 | 52.9 | Chromaticity |  |  |
> 3.0 (turbid) | 57 | 47.1 | < 15 | 42 | 34.7 |
Flow or static | Â | Â | 15~30 | 32 | 26.4 |
flow | 9 | 7.4 | 30~45 | 32 | 26.4 |
static | 112 | 92.6 | > 45 | 15 | 12.5 |
Water depth | Â | Â | Emergent plant | Â | Â |
< 0.5 m | 14 | 11.6 | yes | 41 | 33.9 |
0.5~1.0 m | 71 | 58.7 | no | 80 | 66.1 |
> 1.0 m | 36 | 29.7 | Floating plant | Â | Â |
Predator | Â | Â | yes | 94 | 77.7 |
yes | 67 | 55.4 | no | 27 | 22.3 |
no | 54 | 44.6 | Â | Â | Â |