基于熵权TOPSIS模型的土地利用多功能性诊断

从经济、社会和生态3个方面出发构建土地利用多功能性评价指标体系，应用熵权TOPSIS模型对江苏省近年来土地利用多功能性进行诊断分析可以优化区域土地的合理开发，提高土地利用效率，为促进区域的可持续发展提供有效依据。研究结果表明：2006~2016年江苏省土地利用综合功能经历了一般—良好的发展阶段，综合功能在不断优化；经济功能经历了较差—一般—良好—优秀—良好的发展阶段，虽然有所波动,但其依旧呈增长态势；社会功能经历了较差—一般—良好—优秀的发展阶段，呈现出持续稳步提高趋势；生态功能经历了一般—良好—一般的发展趋势，整体呈下降趋势。另外土地利用的经济功能和社会功能子目标的障碍度在逐年下降，对目前江苏省土地利用有效性起制约作用的主要是生态功能，应减少废水排放和工业固体废弃物等污染造成的生态破坏，加强水资源的保护，同时缩小城乡差距，推进城乡融合，促进土地利用过程中经济、社会和生态功能的协调发展。

Diagnosis of the Multi-functionality of Land Use Based on an Entropy Weight TOPSIS Model

A thorough understanding of current land use is needed in order to optimize the development of regional land, increase the efficiency of land utilization, and provide a sound basis for planning sustainable regional development. This paper investigates land use functions in Jiangsu Province over recent years by constructing a rating system for the multi-functionality of land use, combining economic, social and ecological aspects, and analyzing these data using an entropy weight TOPSIS model. The results reveal that, from 2006 to 2016, the development of the comprehensive functions of land use in Jiangsu Province has trended from average to good showing continuous optimization. The development of the economic function has gone from poor to average to good to excellent to good this is an overall growth trend despite its fluctuations. The social function went from poor to average to good to excellent showing a sustained and steady improvement, whereas the ecological function went from average to good to average, with an overall downward development trend. The barriers to the sub-goals of improving the economic and social functions of land use have been reducing year by year, making the ecological function the main constraint on increasing the efficiency of land use in Jiangsu Province. To address this issue, it is necessary to reduce the ecological damage caused by pollution such as wastewater discharge and industrial solid waste and to better protect water resources. Furthermore, narrowing the developmental disparity between urban and rural areas and promoting urban-rural integration will be essential to ensuring a more balanced development of the economic, social, and ecological functions of land use.