中文摘要：

大力推进土地节约集约利用．是由我国人多地少的基本国情所决定的，也是推动经济转型升级、加快生态文明建设、建设新型城镇化、保障经济社会可持续发展的重要途径。为系统评估自2008年开展土地节约集约利用以来．各地贯彻和执行政策的落实情况和实施效果．本文对全国105个主要城市地价监测点的工作人员进行了问卷调查．创新性地运用熵理论及耗散模型对我国东中西部城市节约集约土地利用的政策有效性进行比较研究，提出了政策熵的概念，经过分析和计算得出以下结论：①我国城市土地节约集约利用政策取得了良好的效果，无论是经济效益、社会效益还是行政效益．均取得了一定的成效。土地利用效率得到了提高；2西部地区政策的总效益高于东部地区和中部地区。表明该政策效果不仅取决于经济发展水平．还耍综合考虑各地区的政策执行力度、资源禀赋、生态环境、人口密度等其他因素；⑧政策的社会效益要显著低于经济效益和行政效益，表明该政策实施的有效性并没有达到社会公众的预期，在各个指标上均与公众的期望有一定距离。需要根据不同地区进一步制定并细化相关的土地节约集约利用政策。文章最后从加大政策执行力度、出台政绩考核办法、完善相关配套政策、健全监管机制等方面给出了政策的优化建议。

英文摘要：

Vigorously promoting the economical and intensive use of land is determined by the basic national conditions of China that large number of people and less land. It is also an important way to promote economic transformation and upgrading, speed up the construction of ecological civilization, construct of the new urbanization and ensure the economic and social sustainable development. To systematically evaluate the implementation effect of the economical and intensive use of urban land policy since 2008, this paper conducted a questionnaire survey to the staff of 105 urban land price monitoring ＇points. Entropy theory and dissipation model were innovatively used to do the comparative analysis on the effectiveness of economical and intensive use of urban land policy between eastern, middle and western China. The concept of policy entropy was put forward. Through analysis and calculation, the below conclusions could be drawn. Firstly, the policy of economical and intensive use of urban land in China has good effects. Economic efficiency, social efficiency and administrative efficiency have made some achievements. The land use efficiency has been improved. Secondly, the total efficiency of policy in the western region is higher than that in eastern and central regions, suggesting that the policy effect not only depends on the level of economic development, but also are affected by the other factors, such as regional policy enforcement, resources endowment, the ecological environment and population density. Thirdly, social efficiency of policy is lower than economic efficiency and administrative efficiency. It shows that the effectiveness of the policy implementation does not reach the public＇s expectations on the various indicators. It is necessary to further develop and refine the related policiees of economical and intensive use of land according to different regions. Finally, suggestions are given, such as strengthening policy implementation, taking more governance performance assessment methods, and perfectin