中文摘要：

通过对经济欠发达地区的耕地面积变化及其驱动机制研究，可以为该地区耕地资源的可持续利用提供理论支撑．利用信阳市的相关数据资料，采用主成分分析方法探索了引起信阳市耕地变化的驱动因子．可以归纳为三个方面：经济发展因素、居民生活水平因素和农业收入因素．通过与发达地区耕地面积变化的驱动机制比较，经济欠发达地区与经济发达地区引起耕地面积减少的因素，既有相同的因素，又有不同的因素．结合信阳市的实际情况，本文提出了实现信阳市耕地资源可持续利用的政策建议．

英文摘要：

By researches of the change and driving mechanism of cultivated land in underdeveloped area, the paper provides theoretical support for sustainable development of cultivated land in that area. Using the principal compo- nent analysis, this paper analyzed the relevant data and came to the conclusion that there are three factors that influent the change of cultivated land in Xinyang City, the economic development, the living standards of residents and agricultural incomes. There are the same factors and different factors that influence changes of cultivated land in both developed and underdeveloped areas. In the end, this paper proposes some policies for sustainable development of cultivated land in Xinyang city.