| 陈晓华.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(): |
| 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 Hefei City |
| 投稿时间：2023-04-23 修订日期：2023-05-23 |
| 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:安徽省住房城乡建设科学技术计划项目（2021-RK05） |
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| 中文摘要: |
| 研究城市建设用地扩张时空特征，能够准确把握城市扩张动态规律，引导城市建设用地合理扩张。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）阶段性、集聚性和方向性：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）扩张用地来源和合理性：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”，大部时间段内扩张合理性较强，在2000—2010年阶段扩张合理性较弱。（3）影响因素：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。 |
| 英文摘要: |
| This paper studied the spatial-temporal characteristics of urban construction land expansion, grasps the law of urban dynamic changes, and guides the reasonable expansion of urban construction land. Based on the land use data of the fifth phase of Hefei City, and starting from the two aspects of spatial-temporal characteristics and influencing factors, the characteristics and intrinsic influencing factors such as the process, agglomeration and directionality of urban construction land expansion were analyzed. The results showed that: (1) Phase, spatial agglomeration and directionality: From 1980 to 2020, the expansion process of urban construction land showed three stages of "low speed-medium speed-high speed"; the spatial agglomeration showed the degree of "first increase and then decrease", and the shape of urban construction land boundaries tended to be standardized and complete; the direction of expansion had significant spatial differentiation, which mainly expanded in the west and southwest(2) Source and rationality of expansion land: The source of expansion land of urban construction land was concentrated, mainly transferred from cultivated land and rural settlement land; the elastic coefficient of expansion showed a trend of "first increase and then decrease" on the whole, with strong rationality in other time periods, and weak rationality in expansion from 2000 to 2010. (3) Influencing factors: The level of economic development was the decisive factor in the expansion level of urban construction land; the population was the leading factor in the urban construction land expansion; the industrial structure was an intrinsic influencing factor for the urban construction land expansion; the innovation in science and education was an important factor promoting the urban construction land expansion. |
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