Assessing Strategies for Control of Irrigation‐Induced Salinity in the Upper Colorado River Basin
分析税收、节水补贴及土地水权购买等政策对减少灌溉盐碱化排放的效率与成本分配,帮助决策者评估控制策略。
Abstract Dissolved mineral salts (salinity) adversely affects numerous urban and agricultural users of Colorado River water in southwestern United States and in Mexico. More than a third of the salt load is thought to be induced by drainage from irrigated lands onto highly saline groundwater deposits in the Upper Colorado Basin in Colorado, Utah, and Wyoming. Various public policy initiatives are proposed to induce farmers to reduce discharges of this nonpoint pollutant. Taxes on water, water conservation subsidies, and land and water rights purchases are analyzed in a linear programming framework. The allocative efficiency and the distribution of control costs and damages among irrigators, water users, and taxpayers are assessed.