Covariates used to model the distribution of swine farms in the United States.
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a Covariates with prefix d are measured as linear distances (m) to the environmental or anthropogenic feature. b Sources and references: Land-cover categories: 2006 National Land Cover Dataset [21]; Topography: National Elevation Dataset [22]; Climate: WORLDCLIM database [23]; Transportation: Environmental Systems Research Institute (ESRI) World Transportation [24]. c Open areas = Cropland + Pasture + Grassland + low and medium intensity Developed areas Covariates used to model the distribution of swine farms in the United States.
创建时间：
2015-11-16
