Distribution of private and public lands within the sgaebrush biome

This data set depicts land ownership in western North America. The data set was created by reformatting and merging state- and province-based ownership data layers originally acquired from diverse sources (including state GAP programs, USBLM state offices and other sources). For each original dataset 3 additional fields, "Pub_Pvt", "CA_OWN", and "SOURCE" were added and populated based on the specific ownership information contained in the source data. The original coverages were then merged based on the "CA_OWN" field. All work was completed in AcMap 8.3. This product and all source data are available online from SAGEMAP: <http://sagemap.wr.usgs.gov>.

本数据集旨在呈现北美西部地区的土地权属分布情况。本数据集通过重新格式化并整合多源渠道获取的州级与省级权属数据图层编制而成，原始数据源自包括州GAP分析项目（Gap Analysis Program, GAP）、美国土地管理局（United States Bureau of Land Management, USBLM）州级办公室在内的多个来源。针对每份原始数据集，新增了"Pub_Pvt"、"CA_OWN"、"SOURCE"三个字段，并依据源数据中包含的具体权属信息完成字段填充。随后基于"CA_OWN"字段完成原始数据图层的合并操作。所有处理工作均在AcMap 8.3环境中完成。本产品及全部源数据均可通过SAGEMAP官网（<http://sagemap.wr.usgs.gov>）在线获取。