Application of nitrogen generated by non-cattle livestock to pasture 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 nitrogen generated by pastured, non-cattle livestock that was...本空间数据集由美国地质调查局（U.S. Geological Survey，USGS）编制，旨在表征放牧型非牛畜禽所产生的氮素总量，该部分氮素……