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首页> 外文学位 >The relative cost-effectiveness of policies to reduce nitrate contamination of groundwater from agricultural sources in southern Ontario.
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The relative cost-effectiveness of policies to reduce nitrate contamination of groundwater from agricultural sources in southern Ontario.

机译：减少安大略省南部农业来源的地下水中硝酸盐污染的政策的相对成本效益。

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The pollution of groundwater as a result of intensive agriculture has become a major concern for rural areas. This thesis examines the relative cost-effectiveness of implementing a buy and lease policy and a nitrogen standard policy as a means of reducing nitrate concentration from agricultural sources at the Thornton production wells, located in the County of Oxford, Ontario. In order to find the minimum social cost of implementing these two policies, two models are developed, the buy and lease model and the nitrogen standard model. Both models involve a linear programming technique. After simulating each policy for the Thornton Well Field and applying the two models it is evident that the buy and lease policy is more cost-effective. The results also show how optimal implementation of each policy reflects the agricultural productivity of various fields along with physical parameters of the aquifer, such as time of travel and infiltration rates.
机译：集约化农业对地下水的污染已成为农村地区的主要问题。本文研究了实施购买和租赁政策和氮标准政策的相对成本效益，以此作为降低安大略省牛津郡桑顿生产井农业来源硝酸盐浓度的一种手段。为了找到实施这两项政策的最低社会成本，开发了两种模型，即购买和租赁模型以及氮标准模型。两种模型都涉及线性编程技术。在模拟了Thornton Well Field的每种策略并应用了两种模型之后，很明显，购买和租赁策略更具成本效益。结果还表明，每项政策的最佳实施方式如何反映各个领域的农业生产力以及含水层的物理参数，例如行进时间和渗透率。

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