研究目的：揭示全国地级以上城市土地利用效率空间分异特征，探寻城市土地利用效率优化路径。研究方法：DEA模型，分组比较法。研究结果：测度了地级以上城市土地利用效率，并将之分解为纯技术效率和规模效率，分析了效率变化的源泉。研究结论：（1）全国地级以上城市土地利用效率总体不高，具有较大的改善空间。在空间分布上，各城市效率值大小与其经济发展水平存在着对应关系。（2）纯技术效率对总效率的影响及制约能力强于规模效率。（3）大部分城市处于规模报酬递增阶段。不同等级和不同区域的城市所处的规模报酬阶段存在明显的差异。（4）城市土地利用中要素投入冗余现象严重，可以通过合理配置投入要素方式优化土地利用效率。%The purpose of this paper is to reveal the characters of spatial disparity of urban land use efficiency of the pre-fectural-level cities in China, and discuss the way of optimization. Methods used include DEA model and comparative anal-ysis. The results include the measurement of urban land use efficiency, and the decomposition of pure technical efficiency and scale efficiency, as well as the source of the disparity. The conclusions include that 1) the average Land Use efficiency was low. The difference showed that it was related with the degree of economic development;2) the impact of pure techni-cal efficiency on total efficiency was larger than that of scale efficiency;3) most Chinese cities were in the stage of increasing return in scale. Meanwhile, there was distinguished difference among cities located at different regions;4) there was obvious overlap of land input in current China, which could be ameliorated via changing the land supply mode.
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