Extent of soil with low phosphorus retention potential in the United States Pacific Northwest

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This spatial data set was created by the U.S. Geological Survey (USGS) to represent the extent of soils with low phosphorus retention potential in the Pacific Northwest region of the United States (Hydro Region 17; Major River Basin 7 (MRB7)).

本数据集发布于美国地质调查局（U.S. Geological Survey，USGS）《科学数据发布审查、批准与发布政策》生效日期（2016年10月1日）之前，该政策的相关要求可参照USGS《调查手册》第502.8章“基础科学实践：科学数据发布的审查与批准”。本空间数据集（spatial data set）由美国地质调查局（USGS）编制，旨在表征美国太平洋西北地区（水文区域17；主要流域7（MRB7））内低磷保留潜力土壤的分布范围。