Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in U.S. ground water used for drinking (simulation depth 50 meters) -- Input data set for confined manure (gwava-dw_conf)

This data set represents the average annual nitrogen input from confined animal manure, 1992 and 1997, in kilograms per hectare, in the conterminous United States....本数据集展示了1992年与1997年美国本土（conterminous United States）范围内，由圈养动物粪便（confined animal manure）产生的年均氮输入量，单位为千克每公顷。