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Table 1 Mean (standard deviation) relative contributions of major explanatory covariates to the spatial distribution of CCHFV and RVFV, estimated by BRT models

From: Mapping the viruses belonging to the order Bunyavirales in China

Variable CCHFV RVFV
Environmental   
Shrubland 2.61 (1.77)
Agriculture 1.92 (1.16)
Grassland 1.33 (1.10) 14.51 (1.54)
Forest 6.12 (0.49)
Sparse vegetation 3.58 (0.20)
Elevation 9.31 (0.76)
Minimum distance to nearest bodies of water 5.54 (0.19)
Normalized difference vegetation index 4.81 (0.38)
Ecoclimatic   
Annual mean temperature 7.92 (2.48)
Precipitation seasonality 6.24 (2.43)
Temperature seasonality 4.00 (1.72)
Mean precipitation in previous month 21.17 (0.45)
Mean temperature in previous month 8.06 (0.64)
Biological   
Population density 2.28 (1.61) 5.31 (0.34)
Livestock densitya 21.58 (1.13)
Goat density 3.23 (1.56)
Sheep density 1.89 (1.26)
Presence possibility of H. asiaticum 68.58 (4.22)
  1. aLivestock density was the sum of the densities of buffalo, cattle, goat and sheep
  2. “–” covariates were not included in the final model