城乡建设用地时空演变及形成机理——以重庆市南岸区为例  

Spatial-Temporal Variation of Urban-Rural Construction Land and the Mechanism of Its Formation——A Case Study of Nan'an District of Chongqing

作　　者：曾于珈 廖和平[1,2] 孙泽乾 ZENG Yu-jia;LIAO He-ping;SUN Ze-qian(School of Geographical Sciences,Southwest University,Chongqing 400715,China;Institute of Land Resources,Southwest University,Chongqing 400715,China)

机构地区：[1]西南大学地理科学学院,重庆400715 [2]西南大学国土资源研究所,重庆400715

出　　处：《西南大学学报（自然科学版）》2019年第2期100-108,共9页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金项目(41701611);中央高校基本科研业务费项目(2120120279)

摘　　要：为引导重庆市南岸区合理配置城乡建设用地,运用土地利用动态变化相关方法及地理探测器对南岸区2009-2016年城乡建设用地时空演变特征与形成机理进行探讨.结果表明:(1)城镇工矿用地呈周期性波动增长,农村居民点用地整体呈减少态势;(2)南岸区发展重心东移,城镇扩张主要集中在中心城区以外,农村居民点用地中心城区内外变化差异不明显;(3)城镇扩张与新增农村居民点用地多源于农用地,耕地占用比例高;(4)城乡建设用地集约利用水平较低,土地城镇化快于人口城镇化,农村宅基地退出慢于农村人口析出;(5)城镇工矿用地增长主要受固定资产投资完成额变化率、城镇人口变化率以及增减挂钩政策等置换得到城镇空间指标的影响,农村居民点用地的减少则主要受第二、第三产业变化率与城镇人口变化率影响.In the process of urbanization,the structure and distribution of urban and rural construction land have a profound impact on the healthy development of towns.In order to guide the rational allocation of urban and rural construction land of Nan'an district of Chongqing,a study was made to analyze the characteristics of the spatial-temporal variation of the local construction land in 2009-2016 and its formation mechanism,using the land-use dynamic model and a geographical detector.The following results were obtained.The growth of urban land for mining and industry presented a periodical fluctuation,and the land for rural settlements showed a declining trend.The development center shifted eastward,urban sprawl mainly occurred outside the central areas,and there was no obvious difference between inner and outer central areas in rural construction land In urban sprawl and new rural settlement construction,most of the land occupied came from agricultural land,especially cultivated land.The intensive utilization level of urban-rural construction land was at a relatively low level,land urbanization was faster than population urbanization,and the withdrawal of rural construction land was slower than that of population.The main factors for urban sprawl were changes in the rate of fixed asset investment and urban population and spatial space from urban-rural construction land replacement,while the decrease of rural construction land was mainly affected by the change rates of secondary and tertiary industries and urban population.

关 键 词：城乡建设用地 时空演变 形成机理 地理探测器 重庆市南岸区 

分 类 号：F301[经济管理—产业经济] S28[农业科学—农业水土工程]