The Judgment and Hint of Tea Necessity and Luxuries Since Economy
GE Wei;JIANG Han-chun;Guo Zhen Environmental Protection Science and Technology Co., Ltd.;School of Economic and Management, Anhui Agricuitural University;
Based on the analysis of supply-demand function, this paper concluded that the income elasticity of demand is greater than 1 by the tea quantity of consumption and the income elasticity of demand is less than 1 by the tea amount of consumption. Such divergence was caused by the rise of tea price and the increases of the proportion of famous tea. This paper concluded that as the price of tea rose, the consumption concept would change from "quantity first" to "quality first".