Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for water input (gwava-s_wtin)
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This data set represents "water input," the ratio of the total area of irrigated land to precipitation, in square kilometers per centimeter, in the conterminous...
本数据集表征"水分输入(water input)"指标,即灌溉用地总面积与降水量的比值,单位为平方千米每厘米,研究范围覆盖毗邻地区……



