重庆“一小时经济圈”城市扩展时空特征研究  

Spatial Expansion Dynamic Characteristics of Urban Construction Land in Chongqing “One Hour Economic Circle”

作　　者：赵伟[1] 曾亚 ZHAO Wei;ZENG Ya(Research Center for Economy of Upper Reaches of the Yangtze River Chongqing Technology and Business University, Chongqing 400067, China;School of Environment and Resources of Chongqing Technology and Business University, Chongqing 400067, China)

机构地区：[1]重庆工商大学长江上游经济研究中心,重庆400067 [2]重庆工商大学环境与资源学院,重庆400067

出　　处：《西南师范大学学报（自然科学版）》2019年第5期86-94,共9页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：教育部人文社科项目(13YJCZH268);重庆市教委科技项目(KJ120726)

摘　　要：在GIS技术支持下,选取1997,2003,2009,2015年4期陆地卫星Landsat TM遥感影像,通过目视解译的方法提取研究区各时期城市建成区基础数据.利用各模型参数,对研究区1997-2015年城市扩展数量变化、形态变化、空间变化进行动态监测和分析.结果表明:(1)数量变化上,城市扩展整体显现出"增长规模大,扩展速度快、强度高"等特征,但扩展速度仍略低于城市人口增长速度.(2)形态演变上,受地形因素、交通、产业外溢等影响,扩展区域布局松散、边缘形态稳定性较差,紧凑度随年份增长逐渐降低,分维数波动剧烈程度从大到小逐渐向"降、升、降"趋势演变.(3)空间变化上,为寻求更多用地资源,城市扩展重心轨迹朝"西北、东北、西北"方向偏移,扩展方向主要集中在NE-NEE方向上的渝北、江北等区域,中心城区扩展模式逐步向"紧凑圈层模式、外部扩展模式、跳跃组团模式"转变.未来该区域城市发展应加强空间一体化管理,保留城市特色多维形态及人文传统,打造出与生态环境相协调的魅力城市.Under the GIS support, 4 Landsat TM(1997,2003,2009,2015) remote sensing image has been selected, and the method extraction research area various times built-up urban area foundation data been unified through the visual interpretation. Using various models parameter, the area 1997-2015 year city expansion quantity change, the shape change, the spatial variation carries on the dynamic monitor and the analysis have been studied. Results show that(1) in terms of quantity changes, showing "growth in large scale, expanding speed, high strength" characteristics, but still expansion velocity is slightly lower than urban population growth, both show the negative allometric growth relationship;(2) in terms of morphological evolution, due to the influence of topography, traffic and industrial spillover, the expansion area is loose in layout and the edge morphological stability is poor;the BCI gradually decreases with the increase of the year, and the fractal dimension fluctuates gradually towards the trend of "drop, up, drop";(3) space changes, to seek more land resources, urban expansion center track offset in the direction of the "northwest, northeast, northwest", mainly in the extending direction of NE to NEE direction Yubei, Jiangbei, such as area, center for urban expansion mode gradually to " the compact circle level pattern, exterior expansion pattern, jumps gradually the group pattern" the transformation. This region future the urban development will be supposed to strengthen the spatial integration management, the retention characteristic city multi-dimensional shape and the humanities tradition, will make the charm city which will coordinate with the ecological environment.

关 键 词：一小时经济圈 城市扩展 空间形态 ARCGIS 

分 类 号：TU984[建筑科学—城市规划与设计]