一、引言改革开放30年来,人们的生活发生了翻天覆地的变化,生活水平显著提高。而在人们的生活中,食品的消费量始终占据着主导地位。食品消费的变化从很大程度上代表了消费者消费总体成本的变化;食品消费的水平反应了消费者实际的生活水平。 I. Introduction In the 30 years since the reform and opening up, people’s lives have undergone tremendous changes and their living standards have risen significantly. In people’s lives, food consumption has always dominated. Changes in food consumption largely represent the overall cost of consumer spending changes; the level of food consumption reflects the actual level of consumer life.