【摘要】 中国是世界第一人口大国,人口基数大,增长速度快,所以中国的粮食安全问题尤为重要。综合考虑了自然、社会和经济水平等因素,立足于粮食供给与需求的平衡关系,并结合人口数量、物价变化等因素,提出了粮食产量变化率和粮食安全指数计算方法,并通过WOFOST模型对未来年度的粮食产量进行预测,来判断吉林省吉林市的粮食安全状况,得出了该市暂无粮食危机的结论。更多还原

【Abstract】 China is the world’s most populous country, with large population base and a high population growth, so China’s food security is particularly important. Considering the factors such as nature, society,economy and so on, based on the balance relationship of grain supply and demand, and connecting with population, price change and other factors, the authors put forward calculation methods of change rate of food production and food security index, forecasted the future annual grain production by WOFOST model, and judged the food security situation in Jilin city of Jinlin province, finally got a conclusion that there was no food crisis currently in Jilin city.更多还原