Application of phosphorus generated by grazing cattle to range land in the United States Pacific Northwest for 2002

This spatial data set was created by the U.S. Geological Survey (USGS) to represent the amount of phosphorus generated by grazing cattle that was applied to range...本空间数据集由美国地质调查局（U.S. Geological Survey, USGS）创建，用于表征放牧牛群产生并施用于放牧区的磷元素总量……