我国北方地区后备耕地资源的开发对缓解人地关系紧张趋势，平衡耕地总量具有重要作用。但也存在着严重的生态环境问题，尤其是农牧交错地带。本文从北方地区整体角度并结合农业部利用美国陆地卫星1:10万TM图象所作的典型调查区资料分析了北方地区后备耕地资源开发的时空特点，并在综合评价的基础上提出后备耕地资源开发的对策和建议。

The exploitation of the reserved cultivated land in Northern China plays an important role in relaxing the tension between people and land, and in balancing gross cultivated land, but the question of ecological environment is also serious, especially in interlace zones of agriculture and stockbreeding. The paper analyzes space time characteristics of the reserved cultivated land exploitation in Northern China in the whole, and the data of typical investigation region is also used, which come from TM satellite image processing (1∶10000) of America done by Agriculture Ministry. Then, the countermeasure and propose is put forward on the basis of synthetic evaluation.