从考察土地城镇化质量问题出发，以生产空间、生活空间、生态空间的功能及其土地利用目标差异为依托，界定土地城镇化空间绩效内涵及表征，研究构建土地城镇化视角下的"三生"空间分类体系，探索基于土地利用信息的"三生"空间识别方法，探寻针对区县单元的土地城镇化空间绩效评价方法论，并以北京大都市区为例，研究各区县在土地城镇化中的"三生"空间变化、空间绩效变化及其动力机制，进而提出优化提升大都市区土地城镇化空间绩效的对策建议，为推进健康城镇化、优化国土空间开发格局提供科学支撑。

The aim of this research is focused on how to evaluate the quality of land urbanization by assessing the spatial performance of land urbanization with different spatial function. First we construct a classification system of metropolitan space by three categories of "producing, living and ecological" space. By applying the technology of spatial recognition, we build up the assessment method on the spatial performance of land urbanization. At the next part the case of metropolitan Beijing has been studied. The spatial performance of land urbanization of each districts and counties at Beijing metropolitan on different time period will be assessed and the driving factors of different spatial performance at different areas will be argued. At last, suggestions on policy-making will be made to improve the spatial performance, to advance healthy urbanization and to optimize the land space pattern of metropolitan areas in China.