Shape Files and Base Rasters required for R Code

This zip file includes the shape files required by our R code for North America, the United States, the empty base rasters for the five different resolutions used to make the ranges. All of our R code can be found at the github repository here: https://github.com/iDigBees/USBees.本压缩包包含了我们用于北美、美国区域的R代码所需的形状文件（Shapefile），以及用于生成分布范围的五种不同分辨率的空基础栅格数据。所有配套的R代码均可在此GitHub仓库获取：https://github.com/iDigBees/USBees。