基于DEA模型的河南省城市土地利用效率评价

以河南省18个地级市为研究样本,构建城市土地利用效率评价指标体系,采用数据包络分析法(DEA模型)对2009、2012和2015年这18个地级市的土地利用效率进行研究分析。结果表明:2009、2012和2015年河南省地级市土地利用效率的区域均值分别为0.957、0.961、0.976,表明河南省土地利用效率总体水平较高且差异不大;影响河南省各地级市土地利用效率的因素有很多,其中固定资产投资和建设用地面积存在大量投入冗余,第二、三产业从业人员投入过多,环境产出效益相对不足;2009年多数城市规模效益处于递减状态,2012—2015年处于规模效益递增阶段的城市数量逐渐增加。城市土地利用效率空间分布呈现中部高边缘低、西部地区高东北部地区低的格局,且存在微弱的规模等级递减效应。合理配置要素投入情况,改善松散低效的土地利用方式对提高河南省土地利用效率至关重要。

Urban Land Use Efficiency Evaluation of Henan Province Based on the DEA Model

Taking 18 cities of Henan Province as research samples,the evaluation index system of urban land use efficiency was built,using data envelopment analysis (DEA) model,the land use efficiency in 18 cities in 2009,2012,2015 was studied.The results showed that:regional mean of land use efficiency in 2009,2012,and 2015 were 0.957,0.961,0.976,indicating that the efficiency of land use of Henan Province overall level is higher and the difference is not significant.Many factors influence efficiency of land use,among which,the fixed assets investment and construction land area exists input redundancy,high-centralized industry practitioners are spending too much,environment is output benefit relatively insufficient.Most of the city scale was in a state of decline in 2009,the number of cities in scale increasing stage was gradually increase during 2012-2015.The urban land use spatial distribution present central high edge low efficiency,the pattern of the western region of northeast high low,and the effect of small scale level.Rational allocation of inputs improvement loose inefficient way of land use is very important to improve the efficiency of land use of Henan Province.