Table 2 Environmental variables selected for the analysis and variance
From: Anopheles species associations in Southeast Asia: indicator species and environmental influences
Variable description | Code | Contribution |
|---|---|---|
Spatial factor: spatial coordinates | Â | Â |
longitude * latitude | XY | 13%** |
CT Abiotic factors: meteorology and topography | Â | Â |
Precipitation of Driest Month | MINRAIN | 5%** |
Precipitation Seasonality (Coefficient of Variation) | SEASONRAIN | 5%** |
Lowest number of rainy days in a month | CMINRD0 | 7%** |
Highest number of rainy days per month | CMAXRD0 | 10%** |
Mean number of rainy days per month | CMEANRD0 | 5%** |
Number of months with less 5 rainy days | CNBML5DAY | 11%** |
Mean Temperature of Driest Quarter | BIO_9 | 12%** |
Precipitation of Warmest Quarter | RAINWARMQ | 5%** |
Number of months with mean temp<20°C | CNBMLESS20 | 6%** |
Minimum temperature of the warmest month | MAXMINT | 7%** |
Maximum temperature of the coldest month | MINMAXT | 9%** |
Minimum temperature of the coldest month | MINMINT | 14%** |
Annual Mean Temperature | MEMET | 10%** |
Mean Diurnal Temperature Range | DAYRANGET | 12%** |
Temperature Annual Range (bio5-bio6) | BIO_7 | 14%** |
Elevation above sea level (m) | ALT | 10%** |
Compound topographic index*100 | CTI2 | 11%** |
Slope*100 | SLOPE3 | 6%** |
ND Biotic factors | Â | Â |
Mean value in buffer 3 km for annual NDWI from 2003 to 2005 | men3WIAN | 18%** |
Mean value in buffer 3 km for annual NDVI from 2003 to 2005 | men3VIAN | 16%** |
Range of value in buffer 3 km for annual NDVI from 2003 to 2005 | ra3VIAN | 5%** |
Range of value in buffer 3 km for annual NDWI from 2003 to 2005 | ra3WIAN | 5%** |
Mean value in buffer 3 km for maximum NDVI from 2003 to 2005 | men3VIMAX | 14%** |
Minimum value in buffer 3 km for maximum NDVI from 2003 to 2005 | min3VIMAX | 17%** |
Mean value in buffer 3 km for range NDVI from 2003 to 2005 | men3VIRA | 9%** |
Minimum value in buffer 3 km for annual NDVI from 2003 to 2005 | min3VIAN | 17%** |
Minimum value in buffer 3 km for annual NDWI from 2003 to 2005 | min3WIAN | 18%** |
Maximum value in buffer 3 km for annual NDVI from 2003 to 2005 | max3VIAN | 13%** |
Maximum value in buffer 3 km for annual NDWI from 2003 to 2005 | max3WIAN | 16%** |
GC Land cover | Â | Â |
1 Forest (40,50,60,70,80,100,110,30) percentage area 3 km buffer (PCA) | GFPCA1 | 10%** |
1 Forested areas (40,50,60,70) (PCA) | FOREST | 6%** |
40 Closed/ open broadleaved/ evergreen/ deciduous forest (100) (PCA) | GDPCA40 | 6%** |
30 Mosaic veg. (grassland/ shrub/ forest) (60%)/ cropland (35%) (PCA) | MOSAIC | 5%** |
130 Closed/ open (broadleaved/ evergreen/ deciduous) shrub (PCA) | SHRUB | 8%** |
5 Irrigated or shrimp farms (11) (PCA) | SHRIMP | 12%** |
No. of Patches (NUMP) 1 forest (40,50,60,70,80,100,110,30) | PATCHFOR | 7%** |
No. of Patches (NUMP) 1 forest (40,50,60,70) | GCNUmP1 | 7%** |