在发达国家，随着后福特社会的到来，城市周边地区的农地正经历着重要的转型，消费导向的功能叠加在传统的生产为主的农地上，这使得农地功能向多样化方向发展。我国一些大城市的人均收入已经达到了中等发达乃至富裕国家的水平，恩格尔系数持续降低，城市区域的交通通达性显著增强，城市区域的农地功能发展急剧的变化。申请拟以北京市为例，意在探索和回答以下几个问题：在快速发展过程中，大城市周围的耕地利用功能到底经历了哪些变化，这些功能变化如何表达？在不同区位上，这种变化有何差异？哪些因素影响着这些变化？现有的研究多是基于土地利用类型的划分，在宏观尺度上考察土地利用功能，本研究主要运用村级调查数据，在考察耕地类型和耕地功能对应（非对应）关系的基础上，对上述问题进行分析和回答。

In developed countries, with the rise of post-fordist socity, agricultural land use in the peri-urban areas,is presently undergoing major transition, a consumer-oriented component is adding to a formerly traditional production-oriented agriculture, which makes diversification of function of agricultural land. In China, per capita income in some large cities has reached the standard of some develolped countries, Engel coefficient is decreasing, and the consumption structure of local residents is adjusting quickly. These put big pressure on cropland in the metropolitan areas. Furthermore, traffic accessibility in urban areas has been greatly increasing. As a result, the functions of cropland are witnessing substaintial changes. This research, with a case study of Beijing, aims at answering the following questions: in the process of rapid growth of urban popualtion and rapid economic development, what changes has happened in terms of cropland functions in the peri-urban areas? How to express the changes in cropland functions? Which is the driving forces behind the changes in cropland function? The existing literature mainly focuses on the studies at regional level or country level and the land use fucntion is often defined and estimated according to the classification of land use types. This study, mainly using the data of investigation at the level of villages, attempts to answer the above questions, basd on examining the corresponding to and non-corresponding relationships between cropland use types and cropland functions.