基于数据包络分析法的吉林省土地利用生态效率时空演化规律研究

Research on Spatiotemporal Evolution Regulation of Eco-efficiency of Land Utilization in Jilin Province Based on Data Envelopment Analysis

[目的]分析吉林省土地利用生态效率时空演化规律,提出土地利用优化方案。[方法]利用数据包络分析(DEA)的CCR-I模型,对2002—2011年吉林省9个地市(州)的土地利用生态效率进行评价。[结果](1)2002—2011年吉林省松原、白城、延边3个地市(州)土地利用生态效率均为DEA有效;而长春、吉林、四平、辽源、通化、白山这6个地市的土地生态效率呈波动式变化;(2)吉林省的土地利用生态效率呈现中部低而东、西部高的空间分布规律.[结论]氨氮、COD、二氧化硫、废水、烟尘等排放量是影响土地利用生态效率低下的主要因素。

[Objective]To analyze the spatiotemporal evolution regulation of eco-efficiency of land utilization in order to put forward an optimization scheme on land utilization in Jilin Province.[Methods]The eco-efficiency of land utilization of the nine cities and areas in Jilin Province during 2002 to 2011 were evaluated based on the CCR-1model of the data envelopment analysis（DEA）.[Results]（1）In terms of DEA,the ecoefficiency of land utilization in Songyuan,Baicheng,Yanbian of Jilin Province are all effective,while the data in Changchun,Siping,Jilin,Liaoyuan,Tonghua and Baishan cities of Jilin Province were fluctuant.（2）The eco-efficiency of land utilization in the center area of Jilin Province is low while the efficiency in the east and west area is relatively high.[Conclusion]The emissions of ammonia nitrogen,COD,sulfur dioxide,waste water and dust are the main influencing factors related to the eco-efficiency of land utilization.