From 2019 to 2020, the outbreak of the COVID-19 epidemic in the world has a great impact on all aspects of people's lives. Some major grain exporting countries are considering or even implemented the grain export restriction policies. Will China's food security be affected? Some scholars have different views on it. We have carefully selected 13 academic papers on cultivated land resources published in the Journal of resources and ecology in the past two years to form an album of "cultivated land resources and food security in China" for your reference.