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Protected Horticulture And Environment. An Integral Decision Model For Greenhouse Waste Management In Southeastern Spain

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  • Gomez, Salvador Parra
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    Over 380000 tons of vegetable waste is produced annually in the “Campo de Dalías” zone (Almería, Spain), deriving from the diverse existing crops grown under plastic cover. Landfills containing this vegetable waste are a potential breeding ground for diseases and pests, they can also be the subject of uncontrolled burning, cause a riverbed blockage and, at the same time, they are an unsightly aspect of the landscape. The only way to prevent or minimize this problem is to adopt a comprehensive and environmentally sensitive waste management program. The utilization of the Contingent Valuation Method (CVM) has allowed the monetarization of the total environmental benefit of the projects undertaken, composting plant or in an energy recycling process, to the tune of 4082777 € and 4794566 €, respectively. Likewise, a Geographical Information System (GIS) has been used to locate an optimal zone for a composting plant. The solution obtained minimizes the transportation cost of organic waste. It represents 40% of the total cost at current market price. The subsequent integration of the results obtained with the previous methods in a cost-benefit analysis showed when a decision on possible public action needed to be taken that the best option would be a composting project with a 63.58 million € Net Present Value (NPV), including the internalization in economic terms of the environmental benefit of recycling organic residue. If this benefit is not internalized, the project NPV would be negative.

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    Paper provided by European Association of Agricultural Economists in its series 107th Seminar, January 30-February 1, 2008, Sevilla, Spain with number 6399.

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    Date of creation: 2008
    Handle: RePEc:ags:eaa107:6399
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    1. Tiwari, D. N. & Loof, R. & Paudyal, G. N., 1999. "Environmental-economic decision-making in lowland irrigated agriculture using multi-criteria analysis techniques," Agricultural Systems, Elsevier, vol. 60(2), pages 99-112, May.
    2. Frykblom, Peter, 1997. "Hypothetical Question Modes and Real Willingness to Pay," Journal of Environmental Economics and Management, Elsevier, vol. 34(3), pages 275-287, November.
    3. Ceballos-Silva, Alejandro & Lopez-Blanco, Jorge, 2003. "Delineation of suitable areas for crops using a Multi-Criteria Evaluation approach and land use/cover mapping: a case study in Central Mexico," Agricultural Systems, Elsevier, vol. 77(2), pages 117-136, August.
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