基于分形理论的南昌大都市区城镇体系空间结构演变与优化

发布时间：2018-05-11 17:21

本文选题：城镇体系 + 南昌大都市区　；参考：《东华理工大学》2017年硕士论文

【摘要】：在这区域经济快速发展的时代,城市化进程较快的地区城市逐渐聚集,同发达国家的城市群形成一样,越来越多的发展中国家形成了大都市区、都市圈并迅速成长。在面对国家“一带一路”战略和推进长江经济带及长江中游城市群建设的重大机遇,江西省全面融入长江经济带,积极打造建设南昌大都市区。因此,对南昌都市圈城镇体系等级规模、空间结构等方面展开研究是有很大的必要性和可行性的,对南昌都市圈的城镇体系发展具有一定的借鉴意义。本文以南昌大都市区为研究对象,将研究单元细化到建制镇级别,利用ArcGis、SPSS、Excel等软件,采用城市首位度、分形方法测算了2000年、2010年、2013年南昌大都市区城镇体系的规模级别分维数、空间结构相关维数等,从中分析南昌大都市区空间结构的演变特征;从自然地理条件、产业状况、交通状况、政策制度等方面分析南昌大都市区城镇体系空间结构的影响因素,并提出优化南昌大都市区城镇体系空间布局的对策建议,推动南昌大都市区城镇体系空间结构的协调发展。主要结论有:(1)南昌市大都市区城镇体系等级结构发育不均衡。首先城镇体系首位度高,等级规模差异过大,结构不完善,2013年,核心城镇南昌市区城区常住人口达到223.74万人,占绝对主导地位,2000年、2010年大都市区内中心城镇缺位,2013年仅有的一个中心城镇抚州市区常住人口50.69万人;其次中间序位城镇发育薄弱,2013年重点城镇有22个,城区常住人口合计140.87万人,约占南昌大都市区总常住人口的14.35%,而一般城镇共130个,城区常住人口合计354.63万人,约占南昌大都市区总常住人口的36.13%;最后是小城镇发展提升较快,中心城市缺位现象仍显著,2000年、2010年中心城镇个数均为零,2013年则出现一个中心城镇,而重点城镇变化最大由2000年的9个增加到2013年的22个;(2)2000年、2010年、2013年南昌大都市区城镇体系规模分维值D分别为1.3403、1.2517、1.2998,均大于1,表明南昌大都市区内城镇规模级别结构较为集中,首位城市垄断水平较高,演变过程中极化作用明显;将2000年、2010年、2013年南昌大都市区城镇体系规模分维值D进行比较,可得出分维整体呈现递减趋势。虽然分维值均大于1,但是呈现递减趋势,表明南昌大都市区虽呈极核结构,但其聚集作用和辐射作用有所降低;以南昌市区为测算中心测得的聚集维数是0.7395,其分维数均符合D2,且偏小小于1,表明随着核心聚集发展,空间布局演变一直处于不平衡发展状态;南昌大都市区城镇体系容量维和信息维分别为1.5653、1.5055,测定系数分别为0.9914、0.9978,容量维和信息维均处于1D2,D值略微偏小,演变过程中空间分布均衡性有所改善,目前均衡性仍属于偏中低;南昌大都市区城镇体系空间结构的关联维数为0.2778趋近于0,发展过程中核心都市区聚集度高,而非核心区域关联度低。(3)南昌大都市区城镇体系空间结构演变的影响因素:南昌大都市区中部地区地势平坦,水系发达,城镇规模较大且空间分布密集,而西北部山体较多,东北部水水域面积大,城镇规模小且空间分布松散;区域内铁路、高速网络分布不均匀,交通通达性以南昌市区为核心往四周逐渐降低,核心城镇交通压力大,小城镇通达性及区域联系较弱;2012-2015年南昌大都市区的三产水平均为“二、三、一”,但服务业与制造业相持平或超越的趋势性愈发明显,大都市区内各城市产业支柱上出现了大比例重合,且产业的空间布局存在交叉重叠化,对城镇体系空间结构的发展产生反作用力;相关的发展规划促进了南昌市一些周边地方抱团发展,积极融入南昌经济圈,但各地政府为了追求本地区利益最大化而忽略区域内专业化分工,造成了大都市区内的重复建设和产业结构趋同。(4)南昌大都市区城镇体系空间结构演变过程中存在的问题:首位城市一极极化现象显著,即城镇体系空间结构呈现结核结构;城镇体系结构发展不均衡,城市体系空间分布较为松散;核心城镇发展优势突出,但大都市区内城际联系不强;大都市区处于初级极核发展阶段,且核心城镇吸引力呈下降趋势。(5)南昌大都市区城镇体系空间结构优化的对策与建议:加快核心城镇的发展,加速大都市区城市化进程;培育有潜力的次级中心城市,发展区域新增长极;优化产业结构,促进经济一体化;建立健全交通基础设施,加强区域交通体系的网络性建设;加强形成网络化与极化共同发展的远景空间结构。
[Abstract]:With the rapid development of the regional economy, gradually gathered the process of rapid city areas of the city, the city group formed with the developed countries, more and more developing countries formed the metropolitan area, metropolitan area and the rapid growth in the face of the country. "The Belt and Road" strategy and promote the construction of the Yangtze River economic belt and the middle reaches of the Yangtze River City Group The major opportunity, Jiangxi Province integrated into the Yangtze River Economic Zone, and actively build the construction of the Nanchang metropolitan area. Therefore, it is necessary and feasible to study the scale scale and spatial structure of the urban system of Nanchang metropolitan area. It has certain reference significance to the development of the urban body system of the Nanchang metropolitan area. This paper takes Nanchang as a big part. The urban area is the research object, and the research unit is refined to the town level. Using ArcGis, SPSS, Excel and other software, the fractal method is used to calculate the scale dimension of the urban system in 2000, 2010 and 2013, and the correlation dimension of the spatial structure in the metropolitan area of Nanchang in 2013. The evolution of the spatial structure of the metropolitan area in Nanchang is analyzed. Characteristics of the urban system spatial structure in Nanchang metropolitan area from the aspects of natural geographical conditions, industrial conditions, traffic conditions, policy and system, and put forward the countermeasures and suggestions to optimize the spatial distribution of urban system in Nanchang metropolitan area, and promote the coordinated development of the urban system space structure in the metropolitan area of Nanchang. The main conclusions are: (1) South The urban system level structure of Changshi metropolitan area is unevenly developed. First of all, the urban system has high priority, the scale and scale are too big and the structure is not perfect. In 2013, the resident population of Nanchang urban district of the core town reached 2 million 237 thousand and 400 people, which accounted for the absolute dominant position. In 2000, the central town was absent in the metropolitan area in 2010 and the only center in 2013. There are 506 thousand and 900 permanent residents in urban Fuzhou urban area; secondly, the middle sequence towns are weak in development. There are 22 key cities and towns in 2013. The total urban resident population is 1 million 408 thousand and 700, accounting for 14.35% of the total permanent residents in the Nanchang metropolitan area. There are 130 general towns and 3 million 546 thousand and 300 urban permanent residents, accounting for 36 of the total resident population in the Nanchang metropolitan area. .13%, in the end, the development of small cities and towns is rising rapidly, and the absence of central cities is still significant. In 2000, the number of central towns in 2010 was zero, and in 2013 a central town appeared, while the largest change in key towns increased from 9 in 2000 to 22 in 2013; (2) 2000 and 2010, the scale fractal value of urban system in Nanchang metropolitan area was D points. 1.3403,1.2517,1.2998, which is more than 1, shows that the scale structure of cities and towns in Nanchang metropolitan area is more concentrated, the first urban monopoly level is higher and the polarization effect is obvious in the process of evolution. The fractal dimension of urban system in Nanchang metropolitan area in 2000, 2010 and 2013 can be compared, although the overall dimension of fractal dimension can be reduced. The fractal dimension value is more than 1, but it shows a decreasing trend. It shows that although the metropolitan area in Nanchang is polar nuclear structure, its aggregation and radiation effects are reduced, and the aggregation dimension measured by Nanchang city as a measuring center is 0.7395, and its fractal dimension is in accordance with D2, and it is less than 1. Unbalanced development state; the urban system capacity of urban system in Nanchang metropolitan area is 1.5653,1.5055, the measurement coefficient is 0.9914,0.9978 respectively, the capacity dimension and information dimension are all in 1D2, the D value is slightly smaller, the spatial distribution equilibrium in the process of evolution is improved, and the equilibrium still belongs to the middle and low level; the urban system of the metropolitan area of Nanchang is empty. The correlation dimension of the inter structure is 0.2778 near 0, the core metropolitan area is high in the development process, but not in the core area. (3) the influence factors of the spatial structure evolution of the urban system in Nanchang metropolitan area: the central area of the Nanchang metropolitan area is flat, the water system is developed, the size of the town is large and the spatial distribution is dense, and the Northwest Mountain Area In the northeast, the water area of the northeast is large, the size of town is small and the spatial distribution is loose; the railway in the region is not evenly distributed at the high speed network. The traffic accessibility takes Nanchang as the core to decrease gradually, the traffic pressure of the core towns is great, the accessibility and regional connection of the small towns are weak; the three production level of the metropolitan area in 2012-2015 years is all "three" Two, three, one ", but the tendency of service industry and manufacturing industry to be flat or transcendent is becoming more and more obvious. There is a large proportion of reclosing on the industrial props in metropolitan areas, and the spatial distribution of the industry is overlapping and overlapping, which has a negative effect on the development of the urban system space structure; the related development planning has promoted some surrounding Nanchang. The local government has developed into the Nanchang economic circle, but the local governments ignore the specialized division of labor in the region in order to maximize the interests of the region, which has caused the repeated construction in the metropolitan area and the convergence of the industrial structure. (4) the problems in the evolution process of the urban system spatial structure in the metropolitan area of Nanchang: the first polar polarization phenomenon Significant, that is, urban system spatial structure presents the structure of tuberculosis; urban system structure development is not balanced, urban system space distribution is relatively loose; the development advantages of the core towns are prominent, but the intercity links in the metropolitan area are not strong; the metropolitan area is in the primary stage of nuclear development, and the attraction of the core cities and towns is declining. (5) Nanchang metropolitan area city The countermeasures and suggestions for the optimization of the spatial structure of the town system are as follows: accelerating the development of the core towns, accelerating the urbanization process in the metropolitan area, cultivating the potential secondary central cities, developing the new regional growth pole, optimizing the industrial structure, promoting the economic integration, establishing and improving the traffic infrastructure, strengthening the network construction of the regional traffic system, strengthening the formation of the formation of the regional traffic system and strengthening the formation of the network. The long-term spatial structure of the joint development of networking and polarization.

【学位授予单位】：东华理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：F299.27

【参考文献】