Assessing the efficiency of rural-urban land conversion and analyzing its influential factors have sufficient significance for the optimal allocation of land resources and protection of limited agricultural land .The study investigates the temporal and spatial changing trends of rural-urban land conversion efficiency in Henan Province and its 18 cities using the method of Data Envelopment Analysis (DEA ) ,analyzes its influential factors by the method of Stochastic Frontier Analysis (SFA ) and optimizes the efficiency of rural - urban land conversion from the perspective of input element employing the DEA projection model ultimately .T he results show that the comprehensive efficiency in Henan Province increased first and then decreased in 2005 -2014 .T here are obvious differences among different areas in this province w hile most of the cities ' comprehensive efficiency remains on the state of average or low .Invalid scale efficiency is the main cause of low comprehensive efficiency . T hree factors ,such as GDP per capita ,comparable profit of land use and ,regional industrial structure upgrading exerted positive influences on rural-urban land conversion efficiency , w hile population urbanization rate played a negative role .In the study period ,Henna province and most of its cities have faced problem of farmland over-input .It has been revealed that there is 34 .18% ~66 .31% of farmland should be conserved .Finally ,this paper puts forward some suggestions on how to improve the efficiency of rural-urban land conversion in Henan province .%运用数据包络分析法(DEA)分析了河南省及其下辖18个主要城市的农地城市流转效率时空变化趋势,继而采用随机前沿分析法(SFA)探究其影响因素,最后基于DEA投影方法从投入要素的角度进行了农地城市流转效率优化.结果表明:2005—2014年间,河南省农地城市流转综合效率总体呈先上升后下降趋势且多数年份效率低下,区域间差异明显,多数城市的综合效率为一般或低下状态;而规模效率无效是导致综合效率低下的主要原因.人均GDP、土地利用比较效益和区域产业结构升级三个因素对农地城市流转效率有正向影响,而人口城镇化率对农地城市流转效率有负向影响.河南省总体及其下辖多数城市在研究期内存在耕地投入冗余问题,具有34.18%~66.31%不等的优化空间.最后,研究提出了提升河南省农地城市流转效率的对策建议.
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