推动京津冀协同发展是一个重大的国家战略，核心是有序疏解北京非首都功能。尽管2014年以来疏解工作取得了重大进展，但仍面临集聚发展机制尚未形成、政策支持力度不够等一系列问题亟待解决。围绕国家这一重大战略需求的关键科学问题，项目采用“状态—驱动力—效应—调控”的探究方式，通过问卷调查、深度访谈、统计分析、数学建模等方法，解析非首都功能的内涵，可视化不同疏解对象的搬迁“足迹”，科学评估疏解效果和失效原因；基于流动人口和企业大数据，定量分析人口迁移、产业集聚等功能疏解的影响因子和作用机制；从宏观（京津冀地区）、中观（北京市、承载地）、微观（动批等特定区域）三个尺度分析非首都功能疏解的区域效应，同步开展情景模拟分析；借鉴国外典型城市的经验教训，反思功能疏解的相关理论，提出调整和完善现有疏解政策的思路和对策，为完善经济地理学科建设、有序疏解非首都功能、促进京津冀协同发展提供科技支撑。

Promoting the synergetic development of Beijing, Tianjin and Hebei region is a major national strategy. The core is to relieve Beijing's non-capital functions in an orderly manner. Although significant progress has been made in the relief efforts since 2014, it still faces a series of problems such as the formation of agglomeration mechanism and insufficient policy support are needed to be solved. Focusing on the key scientific issues of the national major strategic needs, the project adopts the research mode of "development state-driving force-regional effect-regulatory mechanism" to analyze the connotation of non-capital functions through questionnaires, in-depth interviews, statistical analysis and mathematical modeling, to visualize the "footprint" of relocated objects, to scientifically assess the relieving effects and causes of failure, to quantitatively analyze the influencing factors and mechanism such as population migration and industrial agglomeration based on the big data of migrants and enterprises; To analyze the regional effects of non-capital functional extraction from three scales: macroscopic(Beijing-Tianjin-Hebei region), mesoscopic (Beijing, bearing regions), microscopic (specific areas such as zoo wholesale market) , and simultaneously carries out scenario simulation analysis; To learn from the experiences and lessons of the typical cities in the world, rethink the related theories of functional extraction and put forward some ideas and countermeasures for adjusting and perfecting existing policies in order to perfect the construction of economic geography disciplines, orderly relieve non-capital functions and promote the synergetic development of Beijing, Tianjin and Hebei region.