深圳市城市扩展时空格局变化研究

发布时间：2018-02-23 02:15

本文关键词： 城市扩展不透水表面城市化时空格局灯光指数　出处：《中国地质大学(北京)》2017年硕士论文　论文类型：学位论文

【摘要】：随着经济的发展,世界各地城市进入高速发展时期,城市扩展进程不断加快,对城市扩展的研究有利于分析当前城市发展的现状,为城市可持续发展提供有利依据。目前,对于城市扩展的研究主要集中在对城市空间扩展的研究,较忽视城市化程度分析,本研究以快速城市化的典型城市—深圳市为研究区,利用线性光谱分离技术提取2000、2006和2010年深圳的不透水表面,结合DMSP/OLS夜间灯光指数,研究深圳市城市扩展时空格局以及城市扩展类型的变化,并分析规划区与非规划区城市扩展的差异,探讨影响城市扩展变化的原因。研究取得成果如下:(1)基于线性光谱分离技术提取出2000、2006和2010年的深圳市不透水表面以表征城市扩展空间特征,深圳市不透水表面指数平均数值分别为0.47、0.54、0.63。根据提取结果,深圳市城市扩展随时间变化程度不断加深。(2)选取不透水表面指数和DMSO/OLS夜间灯光指数为城市扩展类型的划分指标,将研究区划分为高、中、低三种城市扩展类型,并在此基础上,对研究区进行二级类型划分,从2000到2010年,城市扩展主要类型由“低-低”类过渡到“高-中”类又变成“高-高”类,低等级类型区域发生较大的幅度的缩减,中等级和高等级类型区域都有扩张,其中高等级类型区域扩展趋势明显,每种类型都有转入和转出的变化,低等级类型主要发生转出变化,高等级类型主要发生转入变化。(3)为区分政府主导的规划区与集体经济组织主导的非规划区中城市扩展的差异,根据土地利用类型和权属调查将研究区划分为规划区和非规划区。不透水表面指数和空间自相关莫兰指数分析表明,非规划区城市发展密集程度较大;规划区空间自相关程度高于非规划区,城区之间关系紧密,符合城市的扩展规律,非规划区的自相关程度相对较低,城区空间分布相关性较差;规划区不透水表面的莫兰指数数值不断增大,规划区内部自身城区分布越来越具有规律性,非规划区莫兰指数随时间变化逐渐减少,自相关程度越来越低,城区分布的规律性更差,非规划区存在无序的快速蔓延趋势。(4)影响深圳市城市扩展变化的因素主要包括自然、社会和政策三个方面。毗邻香港得天独厚的地理优势、深圳特区的设立以及国家一系列优惠政策的扶持,使得深圳的城市发展在短时间内有着较大的发展,同时特区存在的政策差异也使得城市扩展在空间上存在异质性。
[Abstract]:With the development of economy, cities all over the world have entered a period of rapid development, and the process of urban expansion has been accelerated. The study of urban expansion is conducive to analyzing the current situation of urban development and providing a favorable basis for the sustainable development of cities. The research on urban expansion is mainly focused on the urban spatial expansion, while ignoring the analysis of the degree of urbanization, this study takes Shenzhen, a typical city of rapid urbanization, as the research area. The impervious surfaces of Shenzhen in 2006 and 2010 were extracted by linear spectral separation technique. Combined with the DMSP/OLS night light index, the spatial and temporal patterns of urban expansion and the changes of urban expansion types in Shenzhen were studied. And the difference between urban expansion of planning area and non-planning area is analyzed. The research results are as follows: 1) based on the linear spectral separation technique, the impervious surfaces of Shenzhen in 2006 and 2010 were extracted to characterize the spatial characteristics of urban expansion. The average values of the impermeable surface index in Shenzhen are 0.47 / 0.54 / 0.63.According to the results of extraction, the degree of urban expansion in Shenzhen is deepening with time.) the index of impermeable surface and the DMSO/OLS 's night light index are selected as the classification indexes of urban expansion type. The study area is divided into three types of urban expansion: high, middle and low. On the basis of this, the study area is divided into two types, from 2000 to 2010. The main types of urban expansion have changed from "low to low" to "high and middle" to "high and high". Among them, the trend of regional expansion of high grade type is obvious, each type has the change of turn in and out, and the low grade type mainly has the change of transition out, In order to distinguish the difference of urban expansion between government-led planning areas and non-planning areas dominated by collective economic organizations, According to land use type and land ownership survey, the study area is divided into planning area and non-planning area. The analysis of impermeable surface index and spatial autocorrelation Moran index shows that the urban development of non-planned area is dense. The degree of spatial autocorrelation of planning area is higher than that of non-planning area, and the relationship between urban areas is close, which accords with the law of urban expansion. The degree of autocorrelation of non-planned area is relatively low, and the spatial distribution correlation of urban area is poor. The value of Moran index on the impermeable surface of the planning area is increasing, and the distribution of its own urban area is more and more regular. The Moran index of the non-planned area decreases gradually with time, and the degree of autocorrelation becomes lower and lower. The distribution of urban areas is even worse, and there is a disorderly trend of rapid spread in non-planned areas.) the factors that affect the urban expansion and changes in Shenzhen mainly include three aspects: natural, social and policy. Adjacent to Hong Kong, there is a unique geographical advantage. With the establishment of Shenzhen Special Economic Zone and the support of a series of preferential policies, the urban development of Shenzhen has been greatly developed in a short period of time. At the same time, the policy difference of the special zone also makes the urban expansion have heterogeneity in space.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU984.2

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