Measuring the implicit value of paddy irrigation water: application of RPML model to the contingent choice experiment data in Japan |
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Authors: | Yoji Kunimitsu |
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Affiliation: | (1) National Agriculture and Food Research Organization, 2-1-6 Kannondai, Tsukuba Ibaraki, 305-8609, Japan |
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Abstract: | For efficient use of water as a limited resource, evaluation on the water value is critical, but there is little information in Asian paddy irrigation. This paper proposes the method for measuring implicit price of paddy irrigation water by using the choice experiment (CE) data with contingent scenarios. Empirical results demonstrated that (a) the estimated implicit price of water showed reasonable value as compared to the production indexes, (b) the random parameter multinomial logit model was more suitable than the conventional multinomial logit model to treat the CE data, and (c) the implicit price is much lower than the full cost price, indicating that full cost pricing probably damages and ruins rice production too seriously in Japan. As seen above, the method proposed here is useful for decision making on water pricing policies and easy to apply to different irrigation systems under limited data of water value. |
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Keywords: | Contingent scenarios Full cost price Implicit price Limited resource Water pricing policy |
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