Environmental Multifunctionality of Paddy Fields in Taiwan- A Conjunction Evaluation Method of Contingent Valuation Method and Analytic Network Procedures

Ya-Wen Chiueh


This study uses the benefit and value assessment method, in conjunction with a Contingent Valuation Method (CVM) and Analytic Network Procedures (ANP), through the use of questionnaires, to assess the preference structure and relative weight scales that are assigned to the multifunctionality function and production output benefits that are derived from paddy fields. The monetary benefits associated with the multifunctionality of paddy fields are as below:1) Benefits from production are NT$20.97 (NT$1 about US$0.03385)(US$0.71), from 1kg of rice, 2) Benefits to food safety and reliance are NT$36.38 (US$1.23), from 1kg of rice, 3) Benefits to cultural heritage and community development are NT$13.51 (US$0.46), from 1kg of rice, 4) Benefits to recreation and landscape are NT$12.34(US$0.42), from 1kg of rice, and 5) Benefits to environmental conservation are NT$25.4(US$0.86), from 1kg of rice. The ratio of nonmarket/rice production is 4.18. The monetary benefits constitute the gross domestic product (GDP), for rice production. These benefits from all five categories constitute the green gross domestic product (Green GDP), for rice production. This study calculated the Green GDP, for rice production, which included the market price of rice production and the non-market value of the multifunctionality of paddy fields, which generated NT$158 billion (US$5.3483 billion), in 2008. The ratio of rice production output to real production output, as defined by this study, obtained a result close to 1(0.97), showing that the benefit assessment for market goods and non-market goods, in conjunction with ANP and CVM, is a reliable assessment method, which should be promoted in the future.

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DOI: http://dx.doi.org/10.5539/enrr.v2n4p114

Environment and Natural Resources Research   ISSN 1927-0488 (Print)   ISSN 1927-0496 (Online)

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