文章摘要
陈晓华,李争杰.合肥市城市建设用地扩张时空特征与影响因素研究[J].安徽建筑大学学报,2023,31(6):22-30,48
合肥市城市建设用地扩张时空特征与影响因素研究
Study on the Spatial-temporal Characteristics and Influencing Factors of Urban Construction Land Expansion in
  
DOI:
中文关键词: 城市建设用地扩张  时空特征  影响因素  城市扩张
英文关键词: urban construction land expansion  spatial-temporal characteristics  influencing factors  urban expansion
基金项目:安徽省自然科学基金项目(2108085ME183);安徽省住房城乡建设科学技术计划项目(2021-RK05)
作者单位
陈晓华 1. 安徽建筑大学 建筑与规划学院安徽 合肥 230601 2. 安徽省城镇化发展研究中心安徽 合肥 230601 
李争杰 1. 安徽建筑大学 建筑与规划学院安徽 合肥 230601 2. 安徽省城镇化发展研究中心安徽 合肥 230601 
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中文摘要:
      基于合肥市五期土地利用数据,从扩张特征和影响因素两个维度分析城市建设用地扩张的阶段性、集聚性、方向性等时空特征与内在影响机制。结果表明:1)1980 ~ 2020 年城市建设用地扩张过程呈现“低速-中速-高速”三个阶段;空间集聚程度呈现“先增后减”,城市建设用地边界形状趋于规整;扩张方向具有显著的空间分异特征,主要扩张方向为西和西南。2)城市建设用地扩张用地来源具有集中性,主要由耕地和农村居民点用地转入;扩张弹性系数整体呈现“先增后减”,2000 ~ 2010 年阶段扩张合理性较弱。3)经济发展水平是城市建设用地扩张的决定性因素,人口数量是扩张的主导因素,产业结构是扩张的内在影响因素,科教创新是扩张的重要促进因素,政府行为是对建设用地扩张具有直接引导作用。
英文摘要:
      Based on the five-decade land use data of Hefei City, the spatial-temporal characteristics such as the stage,agglomeration and direction as well as influencing mechanism of urban construction land expansion were analyzed from the dimensionsof expansion characteristics and influencing factors. The results showed that from 1980 to 2020,the expansion process of urbanconstruction land showed three stages of "low speed-medium speed-high speed",and the spatial agglomeration degree was increasingfirst and decrease later,and the shape of urban construction land boundaries tended to be regular. The direction of expansion hadsignificant spatial differentiation,with the main being west and southwest. The source of expansion land for urban construction land wascentralized,mainly from cultivated land and rural settlements. The elastic coefficient of expansion was increased first and decreasedlater on the whole,with weak rationality from 2000 to 2010. The economic development was the decisive factor for urban constructionland expansion; the population was the leading factor;the industrial structure was an intrinsic factor;education and innovation werean important factor;government behaviours have a guiding effect.
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