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dc.contributor.authorDoole, Graeme J.
dc.date.accessioned2012-05-24T02:54:25Z
dc.date.available2012-05-24T02:54:25Z
dc.date.copyright2012-02
dc.date.issued2011
dc.identifier.citationDoole, G.J. (2011). Cost-effective policies for improving water quality by reducing nitrate emissions from diverse dairy farms: An abatement–cost perspective. Agricultural Water Management, 104, 10-20.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/6361
dc.description.abstractA flexible and replicable approach for the appraisal of the cost-effectiveness of various policy instruments for the regulation of nonpoint pollution from heterogeneous farms is presented. The framework is employed to evaluate three regulatory instruments for achieving reductions in nitrate leaching among a large population of dairy farms in the Waikato region of New Zealand. These instruments are (1) a differentiated policy that allows individual abatement effort to vary among farms to satisfy a catchment-wide reduction in leaching load, (2) a uniform policy that requires all farms to reduce emissions by a constant proportion, and (3) a threshold policy that requires all farms to emit beneath a given threshold leaching load. A 30% reduction in leaching will cost around 1.4, 1.96, and 4.41 million dollars across the catchment with a differentiated, uniform, and threshold policy, respectively. In comparison, a 50% reduction in leaching will cost around 7.77, 8.58, and 11.24 million dollars across the catchment with a differentiated, uniform, and threshold policy, respectively. Thus, a differentiated policy achieves required environmental outcomes at least cost. This result highlights the value of modelling heterogeneous farms in policy evaluation for nonpoint pollution control.en_NZ
dc.language.isoen
dc.publisherElsevieren_NZ
dc.relation.ispartofAgricultural Water Management
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S037837741100312Xen_NZ
dc.subjectagricultural productionen_NZ
dc.subjectcatchment modellingen_NZ
dc.subjectenvironmental policyen_NZ
dc.subjectfarm modellingen_NZ
dc.subjectnitrate leachingen_NZ
dc.titleCost-effective policies for improving water quality by reducing nitrate emissions from diverse dairy farms: An abatement–cost perspectiveen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1016/j.agwat.2011.11.007en_NZ
dc.relation.isPartOfAgricultural Water Managementen_NZ
pubs.begin-page10en_NZ
pubs.elements-id36979
pubs.end-page20en_NZ
pubs.volume104en_NZ
uow.identifier.article-noCen_NZ


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