Historical Woodland Density of the Conterminous U.S., 1873
收藏国家林业和草原科学数据中心2023-02-09 更新2024-03-06 收录
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https://www.forestdata.cn/dataDetail.html?id=d102b07e-19f4-404d-8990-e4619f12f5bf
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资源简介：
This dataset includes polygons with a minimum of 40 acres of woodlands per square mile as depicted in William H. Brewer’s 1873 map of woodland density and covers the conterminous United States. Each polygon has been labeled with the density category (1-5) depicted on the original map. This dataset was created by georeferencing a scanned version of the source map and by heads-up digitizing each woodland density polygon.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-09
