Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Nutrient Inputs from Fertilizer and Manure, Nitrogen and Phosphorus (N&P), 2002

This data set represents the estimated amount of nitrogen and phosphorus in kilograms for the year 2002, compiled for every catchment of NHDPlus for the conterminous...本数据集收录了2002年度以千克为单位的氮、磷元素估算量，系针对美国本土范围内每一个NHDPlus水文汇水区（catchment）编制而成。