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      Evaluation of agri-environmental policies for reducing nitrate pollution from New Zealand dairy farms accounting for firm heterogeneity

      Doole, Graeme J.; Marsh, Dan; Ramilan, Thiagarajah
      DOI
       10.1016/j.landusepol.2012.02.007
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      Doole, G. J., Marsh, D., & Ramilan, T. (2013). Evaluation of agri-environmental policies for reducing nitrate pollution from New Zealand dairy farms accounting for firm heterogeneity. Land Use Policy, 30(1), 57-66.
      Permanent Research Commons link: https://hdl.handle.net/10289/7066
      Abstract
      Policy makers worldwide are interested in the identification of cost-effective policy instruments to reduce diffuse pollution. A large economic model representing heterogeneous farms is used to evaluate a broad set of policies for reducing nitrate regulation within a large catchment dominated by dairy production. A policy instrument that allows the level of abatement to vary among producers according to differences in abatement cost is most cost-effective. The primary goal of 26 kg N ha(-1) can be achieved at a cost of $15 ha(-1) under this cap and trade policy, while a uniform cap on emissions for all farmers would be more than three times as expensive ($49 ha(-1)). In contrast, requiring uniform reductions in stocking rate, banning the application of nitrogen fertiliser, and land retirement perform poorly. These instruments are at least three times more costly than a cap and trade policy over all simulated reductions. Moreover, the differentiated policy does not greatly alter the distribution of farm profit, relative to what exists without regulation. The use of a large, complex economic model incorporating disaggregated farms provides unique insight into the economic benefits accruing to a differentiated policy.
      Date
      2013
      Type
      Journal Article
      Publisher
      Elsevier
      Collections
      • Management Papers [1135]
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