中国粮食虚拟耕地进口的测度及其影响因素——基于大豆、玉米、小麦和大米的分析
Research on the Measurement of the Grain Virtual Cultivated Land Import and its Impact Factors in China——Based on soybean，corn，wheat and rice

测度1995-2015年中国粮食虚拟耕地资源进口量，构建扩展的引力模型，考量虚拟耕地资源进口的影响因素。结果表明：不同粮食品种贸易中所隐含的虚拟耕地进口量具有差别。汇率、价格、技术、经济距离以及区域合作是影响中国粮食虚拟耕地进口的重要因素，经济规模和人口数量只对部分品种的虚拟耕地进口有影响。
Based on the panel data between 1995 and 2015，the paper has measured the imports of the grain virtual cultivated land in China, and constructed an extended gravity model to test the influence factors from the angle of soybean, corn, wheat and rice. The empirical test results show that the virtual land imports are different in the grain varieties. The exchange rate, price, technology, economic distance and entry into WTO are the important factors that affect the import of virtual cultivated land in our country. The scale of economy and population only affect the import of virtual cultivated land of some varieties.