Cost-effective regulation of nonpoint emissions from pastoral agriculture: a stochastic analysis

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dc.contributor.authorDoole, Graeme J.
dc.contributor.authorRomera, Alvaro J.
dc.date.accessioned2013-12-10T20:29:08Z
dc.date.available2013-12-10T20:29:08Z
dc.date.copyright2013-12-10
dc.date.issued2013
dc.description.abstractNutrient emissions from pastoral agriculture are a global cause of declining water quality. Their management is complicated through variability arising from climate and soil influences. This paper compares the implications of input-based policies and direct restrictions on leaching to achieve 10 and 20 per cent reductions in nitrogen (N) load, in the context of pasture-based New Zealand dairy farms. The most important mitigation practices on these farms are de-intensification (involving reductions in N fertiliser application and stocking rate) and the application of nitrification inhibitors. A stylised conceptual model, incorporating both sources of variability, is used to identify the implications of alternative policies. Direct restriction of estimated N leaching is the most cost-effective policy to reduce N leaching by 10 and 20 per cent. These results indicate the general insufficiency of input-based mechanisms for water quality improvement, given the low correlation between input use and leaching, possible substitution with unrestricted inputs and their failure to motivate the use of mitigation strategies. Additionally, model output indicates that inherent variability in water quality, mainly due to climate influences, can dominate the benefits of regulatory action in any given year.en_NZ
dc.identifier.citationDoole, G. J., & Romera, A. J. (2013). Cost-effective regulation of nonpoint emissions from pastoral agriculture: a stochastic analysis. Australian Journal of Agricultural and Resource Economics, article first published online on 10 DEC 2013.en_NZ
dc.identifier.doi10.1111/1467-8489.12034en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/8316
dc.language.isoenen_NZ
dc.publisherWileyen_NZ
dc.relation.ispartofAustralian Journal of Agricultural and Resource Economics
dc.relation.urihttp://onlinelibrary.wiley.com/doi/10.1111/1467-8489.12034/abstracten_NZ
dc.subjectagricultural policyen_NZ
dc.subjectmathematical programmingen_NZ
dc.subjectnatural resource policyen_NZ
dc.subjectoperations researchen_NZ
dc.subjectwater management & policyen_NZ
dc.titleCost-effective regulation of nonpoint emissions from pastoral agriculture: a stochastic analysisen_NZ
dc.typeJournal Articleen_NZ
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