基于模糊综合评价的土地集约利用程度评价——以广西14个地级市市辖区为例

Evaluation of Intensive Land Use Based on GAPP Model and Fuzzy Synthetic Evaluation Model:A Case Study of 14 Cities in Guangxi

针对广西14个地级市,从土地利用强度、经济效益、社会效益和生态效益4个方面构建评价指标体系,通过各个指标的均值与标准差的组合确定评价标准,并利用遗传投影寻踪模型对标准进行检验。利用模糊综合评价法得到各个地级市的土地集约利用等级。结果表明,土地利用集约程度处于Ⅰ等的地级市为贺州和崇左;处于Ⅱ等的为河池、来宾、贵港、钦州和防城港;处于Ⅲ等的为梧州和玉林;处于Ⅳ等的为百色;处于Ⅴ等的为南宁、柳州、桂林和北海。评价结果为Ⅴ等的城市土地集约利用程度最高。广西各地级市的土地集约利用等级分布较不均衡,这种非均衡布局不利于今后的发展。广西应该使各个地级市之间产业布局整体化,互相促进,减少差距;严格限制投资企业的粗放式经营;结合自身的发展趋势,优化土地利用布局,最大限度地提升土地的利用效益。

Taking 14 Prefecture-level cities in Guangxi, this paper builds an index system of evaluation from the aspects of intensity of land use, economic benefit of land use, social benefit of land use and ecological benefit of land use, and then establishes a table of evaluation criterion by combining mean value and standard deviation of indexes and uses GAPP model to test the table of evaluation, obtaining the levels of intensive land use in the cities with fuzzy synthetic evaluation model. The results show that the first level of intensive land use is in the cities of Hezhou and Chongzuo~ the second level in the cities of Hechi, Laibin, Guigang, Qinzhou and Fangchenggang, the third level in the cities of Wuzhou and Yulin. The City of Baise is on the fourth level, the other four cities, including Nanning, Liuzhou, Guilin and Beihai, are on the fifth level. The higher the assessment level, the higher the intensity of land use of the city. It is concluded that the imbalance of intensive land use goes against the development of Guangxi, and that the industrial distribution of Guangxi should be integrated and synergistic and reduce the gap. Besides, it is necessary to strictly restrict land use of the enterprises, to optimize the distribution of land use and to maximize the benefit of land.