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当金融危机从2007年开始向全球蔓延时,粮价也开始飙升,同期,石油价格也创下历史新高。粮食安全与能源安全问题在世界范围内凸现出来。而为缓解能源危机而高速发展的生物能源生产,可归咎为粮价上涨的主要原因。但是,从2008年下半年起,石油和粮食价格又大幅回落,甚至跌幅过半。本文借助统计数据,对这轮粮价波动的过程与根源做了实证分析,阐明了发展生物能源与中国的粮食安全问题之间的关系。
When the financial crisis spread to the world from 2007, food prices also started to soar. Over the same period, oil prices hit a record high. The issues of food security and energy security have emerged worldwide. The rapid development of bioenergy production to ease the energy crisis can be attributed to the main reason for rising food prices. However, since the second half of 2008, oil and food prices dropped sharply, even more than half. Based on the statistical data, this paper empirically analyzes the process and the causes of this round of fluctuations in food prices, clarifying the relationship between the development of bioenergy and food security in China.