三峡库区重庆段城市空间扩展及形态时空演变研究

发布时间：2018-03-03 04:30

本文选题：三峡库区重庆段　切入点：城市扩展　出处：《长江流域资源与环境》2017年09期 　论文类型：期刊论文

【摘要】：由于时代的局限性以及地理单元的独特性,以往城市空间结构理论的研究热点多集中于经济较为发达的东部地区或特大型城市,对于欠发达西部地区的中小城市关注不够。基于RS与GIS技术,通过1995年、2000年、2005年、2010年、2015年5期TM遥感影像提取城市建成区数据,利用城市空间扩展强度和速度指数、紧凑度、分形维数及形状指数对三峡库区重庆段20 a间城市空间扩展及形态演变定量分析。得出以下结论及建议:(1)随着时间增长,城市空间扩展强度及速度总体呈上升趋势,紧凑度持续降低,城市建成区面积逐年递增,城市扩展极不稳定;(2)城市空间形态受重大事件影响易发生"突变",随着时间的沉淀,空间形态再发生"整合";(3)1997年重庆直辖以来,前10 a的移民安置工程为城市形态的"突变"提供了良好契机。2007年之后,在经济发展作为城市空间扩展的核心动力支撑下,研究区城市扩展主流模式侧重于沿一到两个方向扩展,形成"一心两辅"的发展态势;(4)在未来城市发展规划中,应坚持可持续发展理念、合理规划用地布局,优化产业结构,加强环境保护,避免"边发展、边污染"的被动局面,同时结合自身交通运输条件的优势,在各个方向上形成依附在中心城镇周围的腹地并作为未来扩展的基础,构建副中心城市,将城市形态有序沿城市发展中心蔓延,形成"一核多翼"的发展态势。
[Abstract]:Because of the limitation of the times and the uniqueness of the geographical unit, the research focus of the urban spatial structure theory in the past is mainly focused on the eastern regions or super large cities with more developed economy. On the basis of RS and GIS technology, the data of urban built-up area were extracted from TM remote sensing images of 1995, 2000, 2005, 2005 and #date#time. the intensity and speed index of urban spatial expansion were used to obtain the data of urban built-up area, and the intensity of urban spatial expansion and the index of speed and compactness were also used. Fractal dimension and shape index are quantitative analysis of urban spatial expansion and shape evolution in Chongqing section of the three Gorges Reservoir area in the past 20 years. The following conclusions and suggestions are drawn: 1) with the increase of time, the intensity and speed of urban spatial expansion are on the whole increasing. The compactness continues to decrease, the area of the urban built-up area increases year by year, and the urban expansion is extremely unstable. (2) the urban spatial form is susceptible to "mutation" under the influence of major events. With the precipitation of time, the spatial form has been "integrated" and "integrated" since 1997 in Chongqing. The resettlement project in the first 10 years provided a good opportunity for the "mutation" of urban form. After 2007, economic development as the core power of urban spatial expansion, The mainstream mode of urban expansion in the research area focuses on expanding along one or two directions, forming a development trend of "one mind and two auxiliary". In the future urban development planning, we should adhere to the concept of sustainable development, rationally plan the layout of land, and optimize the industrial structure. Strengthening environmental protection to avoid the passive situation of "pollution while developing", and combining the advantages of their own transportation conditions, forming hinterland attached to central towns in all directions and serving as the basis for future expansion, The construction of sub-central city, the shape of the city along the urban development center spread orderly, forming a "one core multi-wing" development situation.
【作者单位】：重庆工商大学环境与资源学院;重庆工商大学旅游与国土资源学院;重庆农村土地交易所;
【基金】：教育部人文社科项目(13YJCZH268) 重庆市教委科技项目(KJ120726) 重庆工商大学研究生创新型项目(yjscxx2016-060-27)~~
【分类号】：TU984.113

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