中文摘要：

我国土地政策参与宏观经济运行的实践表明，缺乏有力的理论支撑是土地政策无法因地制宜地对宏观经济运行进行合理、有效调控的重要原因。基于空间经济学视角，系统分析土地政策参与宏观经济运行的“规模报酬递增”与“区域非均质”特征，同时构建基于规模报酬递增的土地政策空间调控模型，揭示土地政策对宏观经济运行发挥作用的内在机制，进而为不同区域内差异性土地政策的制定提供理论依据。

英文摘要：

The history of land policy＇s system in macro economics operation has showed that the absence of the theory is the key reason for the out-of-control of the macro economics operation. Based on the spatial economics, this paper proposes an increasing returns model which exploits the inner system of land policy＇s role in macro economics operation with the characteristics of ＂mass increasing return＂ and ＂inhomogeneous region＂. The research also offers a theoretical instruction for the differential land policy for different regions.