论我国耕地保护与粮食安全

耕地资源关系到国家经济发展、社会稳定和粮食安全。对我国而言，经济飞速增长，人地矛盾十分突出，每寸土地都显得弥足珍贵。在收集我国1997-2005年耕地面积变化的资料，并作相关分析的基础上，研究得出我国耕地资源呈现不断减少的趋势，其中生态退耕和非农建设用地占用耕地是其变化的主要原因。耕地资源的减少引起了粮食总产量和单产量的变化，而耕地复种指数也是影响耕地产量的主要原因之一。在此基础上分析了耕地保护和粮食安全的内在关系，并提出适合我国的耕地资源可持续利用与粮食安全的措施。

On Cultivated Land Protection and Food Security in China

The cultivated land resource related to the national economic development, the social stabilization and the food security. Especially for our country, whose economy was increasing at very fast speed, the inconsistency between human and land was very obvious, and every inch of land seemed to be so valuable. Based on the analysis of the cultivated land area changing between 1997 and 2005, this paper concluded that the cultivated land resource in our country was decreasing and the main reason was the cultivated land reduction for reforestation and non- agricultural purposes. The decrease of the cultivated land resource gave birth to the changes of total output and single output most, and multi - cropping index was also one of the reasons for the production. Besides, this paper analyzed theimmanent relationships between thecultivated land protection and the food security, and put forward the measure which was suitable for the sustainable use on cultivated land resource and the food security.