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| Daigneault, Adam J.; Greenhalgh, Suzie; Samarasinghe, Oshadhi; Sinclair, Robyn. |
| This paper uses an economic catchment model to assess changes in land use, enterprise distribution, greenhouse gas emissions and nutrient loading levels from a series of policies that introduce carbon prices or nutrient reduction caps on land-based production in the Hurunui Catchment in Canterbury, New Zealand. At $20/tCO2e, net revenue for the catchment is reduced by 7% from baseline levels while GHGs are reduced by 3%. At $40/ tCO2e, net revenue is reduced by 15% while GHGs are reduced by 21%. Nitrogen and phosphorous loading levels within the catchment were also reduced when landowners face a carbon price, thus providing other benefits to the environment. Additional scenarios in this paper assess the impacts from developing a large-scale irrigation... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agriculture and Forestry Modeling; Land Use; Climate Policy; Greenhouse Gas Emissions; Water Quantity; Water Quality; Agricultural and Food Policy; Environmental Economics and Policy; Q23; Q24; Q25; Q54. |
| Ano: 2011 |
URL: http://purl.umn.edu/103855 |
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| Samarasinghe, Oshadhi; Daigneault, Adam J.; Greenhalgh, Suzie; Munguia, Oscar Montes de Oca; Walcroft, Jill. |
| This paper uses responses from a regional farmer survey that identify farmers’ perceptions of environmental policies to calibrate a catchment-level environmental economic model (NZ-FARM) to estimate the impacts of a nutrient reduction policy in North Canterbury, New Zealand. The model maximizes farm income across a catchment, accounting for changes in land use, farm output, nutrient leaching, and GHG emissions. Simulations estimate that reducing nutrient loads by 15–30% can be achieved with economic impacts ranging between 1 and 10%, based on how willing landowners are to change how they manage their farm. Farmers are often hesitant to implement certain mitigation options, however, which results in higher economic costs than the ‘optimal’ estimates.... |
| Tipo: Presentation |
Palavras-chave: Agriculture and forestry modelling; Land use; Nutrient budgeting; Water quality; Greenhouse gas emissions; Farmer perception towards policy; Agricultural and Food Policy. |
| Ano: 2012 |
URL: http://purl.umn.edu/124439 |
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| Samarasinghe, Oshadhi; Sharp, Basil M.H.. |
| This study examines the impact of flood hazard zone location on residential property values. The study utilises data from over 2,000 private residential property sales occurred during 2006 in North Shore City, New Zealand. A spatial autoregressive hedonic model is developed to provide efficient estimates of the marginal effect of flood prone risks on property values. Our results suggest that a property located within a flood hazard zone sells for 4.3% less than an equivalent property located outside the flood hazard zone. Given the median house price, estimated discount associated with flood risks is approximately NZ$22,000. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Flood hazard; Spatial hedonic; Amenity value; Land Economics/Use; Q15; Q51. |
| Ano: 2008 |
URL: http://purl.umn.edu/6013 |
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