国家中心城市土地集约利用评价及障碍因素诊断

Evaluation of Land Intensive Use and Diagnosis of Obstacle Factors in National Central Cities

基于土地集约利用内涵及相关理论基础,结合社会经济数据,从土地利用投入、土地利用程度、土地利用产出及生态效益层面构建了评价指标;运用组合赋权法及多因素综合评价法对2006—2016年国家中心城市土地利用集约分值进行计算;并运用障碍度模型对土地集约利用障碍度因子进行诊断。结果显示:(1)2006—2016年间上海土地集约利用水平始终保持高度集约状态。天津、武汉始终保持中度集约状态;北京、广州、成都、郑州、重庆变化较大,北京、广州土地集约利用水平由中度集约上升到高度集约,成都、郑州由低度集约转化成中度集约,重庆由粗放利用转化为低度集约。(2)影响国家中心城市土地利用集约度的准则层主要障碍因子为土地利用程度及土地产出,说明我国中心城市单位土地面积产出无法满足可持续用地需求;指标层主要障碍因子为人均建设用地面积、建成区面积、地均GDP、人均绿地面积及建成区路网密度等。

The national central city is the product of the strategic development of the new urbanization in China. The evaluation of the intensive use of the land in the central city is the need to promote the further prosperity and development of our country’s social and economic development. Based on the intension of land intensive use and the basis of related theory,this paper constructs evaluation indexes from land use input,land use degree,land use output and ecological benefit in combination with social and economic data,using the combined weighting method and multi factor comprehensive evaluation method,the land use intensive score of 2006-2016 year of the national central cities is calculated,and the obstacle degree model is used to diagnose the obstacle factor of land intensive use. Finally,the corresponding conclusions and countermeasures are obtained.