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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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| Marsh, Dan; Baskaran, Ramesh. |
| Water pollution is widely considered to be one of the most important environmental issues facing New Zealand. Waikato region residents have reported that water pollution is easily their most important environmental concern in each of four attitude surveys conducted by Environment Waikato. Technical and regulatory mechanisms to reduce water pollution, especially non-point source pollution from agriculture are the focus of an intensive research effort both in New Zealand and internationally. This work should assist farmers and policy makers to identify the most cost effective options for achieving any given improvement in water quality. Research described in this paper aims to complement existing research projects by developing appropriate methodology for... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Water Quality; Non Market Valuation; Choice Modelling. |
| Ano: 2009 |
URL: http://purl.umn.edu/47951 |
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| Martins Okechukwu Isikwue; Dept of Agric & Environmental Engineering, University of Agriculture, Makurdi, Nigeria; Jeremiah A. Ato; Dept of Agric & Environmental Engineering, Univ. of Agric Makurdi; Isaac T. Ayua; Agric. & Environmental Engineering, Univ. of Agriculture Makurdi. |
| An affordable potable water treatment unit was designed and constructed. The components were coagulation unit, sedimentation unit, slow sand filter unit, utraviolet unit and the storage unit. Filtrate from the chamber was compared with International acceptable standards. The result showed that the treatment chamber proved effective and can produce at least 100 litres of portable water per day. The physical and chemical parameters monitored were reduced to the acceptable limit by WHO (World Health Organisation), NAFDAC(National Agency for Food and Drug Administration and Control) Nigeria and Nigerian Standard for Drinking Water Quality (NSDWQ). However, coliform was not totally removed but the count was reduced by 99.4%. |
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Palavras-chave: Land and Water Management; Water Quality; Raw water; Filtration; Treatment; Potable water; Domestic usage. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2872 |
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