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Table 2 The suitable range and percent contribution of each environmental condition for scrub typhus occurrence

From: Scrub typhus in Jiangsu Province, China: epidemiologic features and spatial risk analysis

Variable Description(unit) Suitable rangea Percent contributiond
BIO_01 Annual mean temperature(°C) 11.3–14.3 1.8
BIO_02 Mean diurnal range 8.7–10.7 14.5
BIO_04 Temperature seasonality 920.0–980.0 24.9
BIO_05 Max temperature of warmest month(°C) 31.7–32.8 1.1
BIO_06 Min temperature of coldest month(°C) −4.2 to-1.2 19.9
BIO_12 Annual precipitation (mm) 740.0–1000.0 3.6
BIO_13 Precipitation of wettest month (mm) 196.0–275.0 8.7
BIO_14 Precipitation of driest month (mm) 17.0–28.0 2.0
BIO_15 Precipitation seasonality (mm) 58.0–82.0 3.6
prec Precipitation (mm) 22.0–71.0 0.5
tavg Monthly average temperature (°C) 8.9–11.1 5.6
wind Wind speed (m s-1) 2.2–2.5 1.6
NDVI Normalized difference vegetation index 0.18–0.39 7.5
LC Land cover type 7,13,14b 4.7
DEM Altitude(m) nonec 0.0
Aspect Aspect nonec 0.0
Slope Slope nonec 0.0
  1. aThe suitable range of each variable indicates the conditions within which the probability of scrub typhus occurrence is higher than 50%
  2. b7: Open shrublands; 13: Urban and Built-up; 14: Cropland-Natural Vegetation Mosaic. The combination of these classes could be found in and around the countryside
  3. cNonemeans this environmental factor has little effect on the final model construction
  4. dThe percentage contribution illustrates the relative contributions of the environmental variables to the final training Maxent model using the averages of the repeated 10 runs