Taiwan Demand for Main Food: A Complete System of Quantity Effects on Price.

• Main Authors: Shih-Ju Yang, 楊適如
• Other Authors: Chiang-Ren Show
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/29663198055449819628

博士 === 國立臺灣大學 === 農業經濟學研究所 === 90 === The purpose of this paper is the response of the price when the quantity of the food change. That is, inverse demand system. Taiwanese agricultural institutions can use the results from this paper when drafting agricultural policies. The price and quantity data used in this paper obtained by magazines which edited by agricultural institutions. This paper applies the constant flexibility model that developed by K. S. Huang, and add the conditions of homogeneity, symmetry, and scale aggregate, to estimate 650 compensated parameters in inverse demand system. The simulation of price during 1971 to 2000 are perfect, except vegetables. The compensated parameters include 25 direct-price flexibilities, 600 cross-price flexibilities, and 25 scale flexibilities. All of direct-price flexibilities are negative, except rice, that satisfy expectation. Uncompensated parameters translate from compensated parameters by linkage equation. Both of them are almost equal in this paper. It imply data which used in this paper are at equilibrium state, and the complete demand analysis is better than partial or single demand analysis. The paper consider that it exist cross relationship between these food. So the direct-price flexibilities in inverse demand system are not reciprocal of the direct-price elasticities in ordinary demand system. After entering WTO, if imported-food were opened not only affects its price but also effect prices of others.