The On‐Farm Costs of Reducing Groundwater Pollution
通过整合植物模拟、水文和经济模型，评估了美国俄勒冈州哥伦比亚盆地集约化灌溉农场减少硝酸盐地下水污染的策略成本，发现调整施氮和灌溉时机与用量可在利润损失很小的情况下减少污染。
Abstract Agricultural chemicals ate a source of groundwater pollution in some areas. Regulatory options to reduce such nonpoint pollution imply costs to producers. By integrating plant simulation, hydrologic, and economic models of farm‐level processes, this study evaluates on‐farna costs of strategies to reduce nitrate groundwater pollution. The empirical focus is on intensively managed, irrigated farms in the Columbia Basin of Oregon. Results suggest that changes in timing and application rates of nitrogen and water reduce nitrate pollution with little loss in profits. Once such practices are adopted, further reductions in nitrates can be achieved only at increasing costs to producers.