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1.
土地利用动态变化的空间测算模型研究 总被引：1，自引：0，他引：1
The spatial calculating analysis model is based on GIS overlay. It will compartmentalize the land in research district into three spatial types: unchanged parts, converted parts and increased parts.By this method we can evaluate the numerical model and dynamic degree model for calculating land-use change rates. Furthermore, the paper raises the possibility of revising the calculating analysis model of spatial information in order to predicate more precisely the dynamic changing level of all types of land uses. In the most concrete terms, the model is used mainly to understand changed area and changed rates (increasing or decreasing) of different land types from microcosmic angle and establish spatial distribution and spatio-temporal principles of the changing urban lands. And we will try to find out why the situation can take place by combining social and economic situations. The result indicates the calculating analysis model of spatial information can derive more accurate procedure of spatial transference and increase of all kinds of land from microcosmic angle. By this model and technology we can conduct the research of land-use spatio-temporal structure evolution more systematically and more deeply, and can obtain a satisfactory result. The result will benefit the rational planning and management of urban land use of developed coastal areas in China in the future. 相似文献
2.
The spatial structures of China’s Major Function Zoning are important constraining indicators in all types of spatial planning and key parameters for accurately downscaling major functions.Taking the proportion of urbanization zones,agricultural development zones and ecological security zones as the basic parameter,this paper explores the spatial structures of major function zoning at different scales using spatial statistics,spatial modeling and landscape metrics methods.The results show:First,major function zones have spatial gradient structures,which are prominently represented by latitudinal and longitudinal gradients,a coastal distance gradient,and an eastern-central-western gradient.Second,the pole-axis system structure and core-periphery structure exist at provincial scales.The general principle of the pole-axis structure is that as one moves along the distance axis,the proportion of urbanization zones decreases and the proportion of ecological security zones increases.This also means that the proportion of different function zones has a ring-shaped spatial differentiation principle with distance from the core.Third,there is a spatial mosaic structure at the city and county scale.This spatial mosaic structure has features of both spatial heterogeneity,such as agglomeration and dispersion,as well as of mutual,adjacent topological correlation and spatial proximity.The results of this study contribute to scientific knowledge on major function zones and the principles of spatial organization,and it acts as an important reference for China’s integrated geographical zoning. 相似文献
3.
长江三角洲地区生态经济系统协调度及其预警(英文) 总被引：2，自引：0，他引：2
On the basis of Landsat TM data of the Yangtze River Delta (YRD) Economic Zone in 1991, 2001 and 2008, this article, taking 90 counties in this region as study units, built spatial data transformation models, ecosystem service value (ESV) and coordination degree of eco-economic system (CDES) models. With the aid of ArcGIS9.3, mass grid and vector data has been processed for spatial analyses. ESV and CDES indexes have demonstrated the relationship between economic development and eco-environment system and its evolu-tion characteristics in the researched areas. Furthermore, the indexes have also been used for functional zoning and pattern recognition. Some results can be shown as follows. Firstly, since 1991, land use in the YRD has greatly changed: urban land area has increased primar-ily from original paddy land, dry land, grassland, garden plot and other land. Secondly, the ESV model has proved the deterioration trend of the YRD ecological system from 1991 to 2001 and slower degradation trend during 2001-2008. Also, it is illustrated that land-use conversion from water area and paddy field to urban area and dry land could cause great damage to ecosystem stabilization. Thirdly, GDP in the central and southern parts of the YRD is higher than that in the northern part since 1991. GDP growth rate in the central part is higher than that in the northern part during 1991-2001. This growth rate in the central part is also higher than that in the southern and northern parts of the YRD from 2001 to 2008. Fourthly, the YRD could be categorized into 12 types of subregions in terms of CDES index. According to its spatial characteristic of CDES index value in the study area, eco-economic conflict area with low CDES value which is located in the central part is surrounded by eco-coordinated areas with high CDES values. This illustrates a core-periphery spatial structure exists in the YRD. During 1991-2001, the CDES value implied the convergent de-terioration trend of eco-economic system in the study area; while it gradually stepped into coexistence of divergent deterioration and coordination during 2001-2008. Finally, this paper analyzed five subregions in the YRD, including initially degrading zone, initially coordinative zone, continuously degrading zone, coordination-declined zone and coordination-promoted zone, based on eco-economic coordination and evolution patterns. And these subregions can be recognized and categorized by spatial transformation model. 相似文献
4.
Spatial pattern reconstruction of regional habitat quality based on the simulation of land use changes from 1975 to 2010 总被引：3，自引：0，他引：3
Reconstruction of the spatial pattern of regional habitat quality can revivify the ecological environment background at certain historical periods and provide scientific support for revealing the evolution of regional ecological environmental quality.In this study,we selected 10 driving factors of land use changes,including elevation,slope,aspect,GDP,population,temperature,precipitation,river distance,urban distance,and coastline distance,to construct the CA-Markov model parameters and acquired the land use spatial data for 1975,1980,1985,1990,and 1995 by simulation based on the land use status map for 2010.On this basis,we used the InVEST model to reconstruct the spatial pattern of habitat quality in the study area and conducted classification division and statistical analysis on the computed habitat degradation degree index and the habitat quality index.(1)The results showed that from 1975 to 2010,the habitat degradation degree gradually increased,and the habitat degradation grade spatially presented a layered progressive distribution.Habitat quality presented a constantly decreasing trend.The high-value zones were mainly distributed in the mountainous areas,while the low-value zones were mostly located in built-up areas.During the period of 1975-2010,low-value zones gradually expanded to their surrounding high-value zones,and the high-value zones of habitat quality tended to be fragmented.(2)The spatial-temporal variation characteristics of habitat quality from 1975 to 2010 showed that the regions with low habitat quality were difficult to be restored and mostly maintained their original state;the regions with poor habitat quality,which accounted for 6.40%of the total study area,continued to deteriorate,mainly around built-up areas;the regions with good and superior habitat quality,which accounted for 5.68%of the total study area,were easily converted to regions with bad or poor habitat quality,thus leading to the fragmentation of the regional habitat.(3)From 1975 to 2010,land use changes in the study area were significant and had a huge influence on habitat quality;the habitat quality in the study area decreased consistently,and the area of the regions with bad and poor habitat quality accounted for more than 60%of the total study area.Construction land was the largest factor threatening habitat quality. 相似文献
5.
Health inequality is an increasing concern worldwide.Using the coefficient of variation,Theil index,exploratory spatial data analysis,and spatial panel econometric model,we examined the regional inequality,spatio-temporal dynamic patterns,and key factors in the health status of Chinese residents from 2003 to 2013.We found that China's residential health index(RHI) decreased from 0.404 to 0.295 in 2003–2013 at an annual rate of 2.698%.Spatially,resident health status,based on the RHI,has improved faster in the western region than in the eastern and central regions.Inequality in resident health status continued to increase between 2003 and 2013;inequality between regions decreased,but health status inequality expanded within regions.Furthermore,disparities in health status grew faster in western regions than in the eastern and central regions.The spatial distribution of resident health status formed a "T-shaped" pattern across China,decreasing from east to center then to the west with a symmetric decrease north and south.Using the change in Moran's I from 2003 to 2008 and 2013,we found that the distribution of resident health status across China has narrowed.All the hot spots and cold spots have decreased,but they are also stable.Resident health status formed a stable cold spot in the western regions,while the east coastal area formed a stable hot spot.Selected explanatory variables have significant direct impacts on resident health status in China:increasing per capita GDP,per capita spending on health,and urbanization,and improving environmental quality all lead to better resident health status.Finally,we highlight the need for additional research on regional inequality of resident health status across multiple time,spatial,and factor domains. 相似文献
6.
Using ASTER(Advanced Spaceborne Thermal Emission and Reflection Radiome-ter) infrared remote sensing data we inversed the parameters of urban surface heat fluxes applying the PCACA model and theoretical position algorithm,and then we analyzed the in-fluence of different land use types on the surface heat fluxes and energy balance.In this study,Kumagaya,a city in Saitama Prefecture,Japan,was selected as the experimental area.The result shows that the PCACA model is feasible for the surface heat fluxes estimation in urban areas because this model requires less parameters in the procedure of heat fluxes estimation in urban areas with complicated surface structure and can decrease the uncertainty.And we found that different land-use types have indicated the height heterogeneity on the surface heat fluxes significantly.The magnitudes of Bowen ratio in descending order are industrial,residential,transportation,institutional,dry farmland,green space,and water body.Under the same meteorological condition,there are distinct characteristics and regional differences in Bowen ratios among different surface covers,indicating higher sensible heat flux and lower latent heat flux in the urban construction land,while lower sensible heat flux and higher latent heat flux in the vegetation-covered area,the outskirt of the urban area.The increase of urban impervious surface area caused by the urban sprawl can enlarge the sensible heat flux and the Bowen ratio,so that it causes the increasing of urban surface temperature and air tem-perature,which is the mechanism of the so-called heat island effect. 相似文献
7.
北京山区沟域经济发展的空间结构 总被引：1，自引：0，他引：1
Valley economy is a new mode in mountainous area development that is defined by various characters of valley development,and is a distinguishing economical geographic pattern for mountainous area development.The special spatial coupling relations in the dis-tribution of different mountainous elements in valleys are new subjects for the mountain de-velopment studies,and such studies are meaningful both for researches and practices.Based on the long term researches on mountainous area development and following a brief exploration into the connotations and the spatial organizing process of valley economy,the authors analyzed the present situations of the development of valley economy in Beijing’s mountainous areas,studied the characteristics and the impacts of the spatial structural changes of the valley economy in Beijing’s mountainous areas,and finally proposed a rational arrangement of the spatial structure of the valley economy in Beijing’s mountainous areas.It is considered in this study that valley economy plays an important role in the development and functional transformation in Beijing’s mountainous areas in the new epoch.Firstly,valley economy is not outlined by the administrative boundaries,and it connects most of the villages in the mountainous areas roughly along the major transportation lines.Therefore,valley economy can exert positive influence on the development in the mountainous areas,at least in the aspects such as the rearrangement of industrial structure in the mountainous areas and the coordinated development of rural and urban areas.In addition,it is found that the valley economy in Beijing’s mountainous areas is evolved in a spatial organizing stage of secondary concentration,which is characterized by resource-saving,ecological protection and industrial optimization.Therefore,the development of valley economy will be helpful to the coordination between ecological protection and economic development in the mountainous areas,and will promote the integrated development of the mountainous areas.The developing mode of the valley economy in Beijing’s mountainous areas will provide the basis for the decision-making in the transformation of the functional roles of Beijing’s mountainous areas,and on the other hand,will present experiences for the studies in the mountainous areas outside of Beijing. 相似文献
8.
厦门岛城市空间扩张特征及其影响因素 总被引：1，自引：0，他引：1
Most of the world’s cities are concentrated in coastal areas. As a special geographical component of the coastal system, island urban spatial expansion is the outcome of interactions between city development and the physical environment. This paper takes Xiamen Island, located in Southeastern China, as an example to analyze island urban spatial expansion and its determinants by combining an analysis of the literature on urban development policies, urban overall plans, population growth and industrial development, with geographical information analysis using historical maps and remote sensing photographs. Firstly, we reviewed the history of the Xiamen City development during the last 100 years, which can be divided into four periods: the embryonic modern city and early development from 1908 to 1949; administrative boundary expansion and infrastructure development from 1950 to 1979; special economic zone construction and rapid urbanization from 1980 to 2003; and Bay City construction since 2003. The dynamic changes to the coastline, island shape, built-up area, transportation, administrative division, and major land use type conversion which occurred during approximately the past 100 years were analyzed and the characteristics of the island urban spatial expansion were concluded: early expansion from a central point, followed by expansion along a section of coastline, and expansion from the coastline inland. Secondly, we discussed the potential determinants of island urban spatial expansion including administrative division adjustment, urban master planning revision, industrial development, topographical factors, coastal area reclamation, transportation expansion, and population growth. Finally, the effects of each potential determinant on island urban spatial expansion were concluded. Island urban spatial expansion is the result of a synthesis of natural and socio-economic factors which are not independent but interacting. Built-up area expansion is the major driver of island land cover and land use changes. By this paper, we hope to provide a scientific reference contributing to the rational understanding of island and coastal sustainable urbanization in China, and the world beyond. 相似文献
9.
The Bohai Rim region is one the most important bases for commodity grain pro-duction in China.With the rapid pace of agricultural industrialization,nitrogenous fertilizer has been used at an ever increasing rate,which resulted in the trace of accumulative nitrogen in the soil and caused serious environmental problems.In this study we made use of the farm-land nitrogen balance model to assess the spatial difference of farmland nitrogen nutrient budget in the Bohai Rim region in 2008 with the assistance of GIS.Our results indicated that:1) Farmland in this region has a nitrogen surplus totaling 5.0822 million tons,or an average of 288.54 kg/ha.2) In the Bohai Rim region,farmland nitrogen input and farmland nitrogen budget both show a spatial differentiation.Major grain-producing areas have a higher nitrogen input than that of the grazing-farming areas.The main sources of nitrogen input include chemical fertilizer,organic fertilizer,deposition from atmospheric drying and wetting,and biological fixation,which account for 79.47%,9.53%,4.62%,and 3.58% of the total input,respectively.Therefore,chemical fertilizer is the predominant source of nitrogen input to farmland.3) A total of 3.3398 million tons of nitrogen were output from the farmland via har-vested crops and it accounts for 52.36% of the total nitrogen output from farmland in this region.On average,the amount of nitrogen output from unit farmland is equal to 176.65kg/ha.This study has shed light on farmland nitrogen budget and its spatial variation in the study area,may provide scientific evidences for rationalizing the use of chemical fertilizer and managing agricultural operation on the regional scale and is also valuable for improving the economic and ecological efficiency of fertilizer use at the regional scale. 相似文献
10.
Understanding the spatial and temporal variations of cropping systems is very important for agricultural policymaking and food security assessment,and can provide a basis for national policies regarding cropping systems adjustment and agricultural adaptation to climate change.With rapid development of society and the economy,China's cropping structure has profoundly changed since the reform and opening up in 1978,but there has been no systematic investigation of the pattern,process and characteristics of these changes.In view of this,a crop area database for China was acquired and compiled at the county level for the period 1980–2011,and linear regression and spatial analysis were employed to investigate the cropping structure type and cropping proportion changes at the national level.This research had three main findings:(1) China's cropping structure has undergone significant changes since 2002;the richness of cropping structure types has increased significantly and a diversified-type structure has gradually replaced the single types.The single-crop types—dominated by rice,wheat or maize—declined,affected by the combination of these three major food crops in mixed plantings and conversion of some of their planting area to other crops.(2) In the top 10 types,82.7% of the county-level cropping structure was rice,wheat,maize and their combinations in 1980;however,this proportion decreased to 50.7% in 2011,indicating an adjustment period of China's cropping structure.Spatial analysis showed that 63.8% of China's counties adjusted their cropping structure,with the general change toward reducing the main food types and increasing fruits and vegetables during 1980–2011.(3) At the national level,the grain-planting pattern dominated by rice shifted to coexistence of rice,wheat and maize during this period.There were significant decreasing trends for 47% of rice,61% of wheat and 29.6% of maize cropping counties.The pattern of maize cropping had the most significant change,with the maize proportion decreasing in the zone from northeastern to southwestern China during this period.Cities and their surroundings were hotspots for cropping structural adjustment.Urbanization has significantly changed cropping structure,with most of these regions showing rapid increases in the proportion of fruit and vegetables.Our research suggests that the policy of cropping structural adjustment needs to consider geographical characteristics and spatial planning of cropping systems.In this way,the future direction of cropping structural adjustment will be appropriate and scientifically based,such as where there is a need to maintain or increase rice and wheat cropping,increase soybean and decrease maize,and increase the supply of fruit and vegetables. 相似文献
11.
The dual-nuclei spatial structure is composed of a regional central city, a port city and their spatial relations in certain regions. In general, this spatial structure could be found in most of the coastal regions or regions along big rivers. In terms of the mechanism, the dual-nuclei structure is the result of the spatial interaction and the complementary characteristics of the center city and the port city. The "marginal function" of the port city and its relationship with the central city has long been discussed in the literature. On the one hand, drainage area is the main natural geographical background of the formation of the dual-nuclei spatial structure; therefore, we can build a theoretical geographic structure that is based on the drainage area. On the other hand, vicissitude of the coastline also has important influence on the formation of the dual-nuclei spatial structure. It is especially meaningful if we can notice this when we examine deeply the research on the spatial structure of delta. 相似文献
12.
区域双核结构模式的形成机理 总被引：94，自引：4，他引：94
双核结构模式是指在某一区域中，由区域中心城市和港口城市及其连线所组成的一种空间结构现象。它广泛存在于中国沿海和沿江地区，以及其它国家和地区中。从机理上考察，它导源于港口城市与区域中心城市的空间组合，由于兼顾了区域中心城市的居中性和港口城市的边缘性，从而可以实现区位上和功能上的互补。从形成类型看，可分为内源型和外生型2种类型的双核结构，中国和美国分别是其典型代表。对于后者，还衍生出由新旧首都构成的一种特殊的双核结构现象。双核结构的形成与流域有莫大的关系，据此可建立基于流域的双核结构形成的理想图式。流域自然条件、运输结构的改变，以及运输主通道走向等因素的综合作用，可使双核结构的形成区域由流域拓展至其它一般区域。 相似文献
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14.
在“流空间”理论的影响下,强调要素连接性和空间关联性的城市网络成为指示区域空间关系的核心视角,探讨城市网络空间结构将能为区域发展政策制定提供科学依据。以江苏省2014年日平均的高速公路流数据为依托,刻画城市网络的宏观格局与层级特征,利用社区发现算法对城市网络进行空间剖分并挖掘潜在的关联结构。研究发现：① 江苏城市网络宏观格局的空间构造呈现出类似围棋的“金角、银边、草肚皮”的分散性特征,可大致辨别内部发育出多个不同的子网络系统;② 城市节点和联系轴线具有明显的层级结构,城市等级的重要性与节点本身的社会经济属性、地理区位等具有一定的空间耦合性,轴线层级与地理距离具有明显的空间交互叠加作用;③ 社区发现算法对网络的空间剖分共识别出包括苏锡常社区、宁镇扬泰社区、通盐社区、连云港社区、宿淮社区和徐州社区等6个在空间上相连且边界清晰的“城市社区”,具有一体化效应、邻域效应、行政区效应、袭夺效应和置换效应等五个具有典型性的区域效应;④ 依据社区间的空间交互作用,可凝练出双核—多核交叉型、双核—单核交叉型、单核—多核交叉型、单核—单核集中型、双核—多点分岔型、单核—多点分散型和多核—多点分散型等7类空间关联结构。 相似文献
15.
苏州与上海孪生城市模式的形成机理及其区域效应 总被引：3，自引：0，他引：3
在对美国进行大量实证分析的基础上,艾伦从理论上推导出的孪生城市模式丰富和发展了区域空间结构理论。1990年代以后,苏州在跨国公司投资作用下的快速崛起,已与上海初步构成了一种功能上互补的共生关系,即孪生城市模式。这一模式的形成主要导源于以下两方面的原因。从行政原因上看,苏州与上海由于分属两个省级行政单元,经营成本、产业政策自1980年代以来一直有着较为明显的差异;从经济原因上看,苏州与上海仅距不到90 km、位居上海都市圈的内圈层,且离虹桥机场约50 km。苏州的快速崛起以至于苏沪孪生城市的形成,产生了多方面的区域效应。苏州与无锡本是一对水平相当、产业性质类似的城市,现已出现了明显的差异化发展态势,从而为在此基础上城市合理分工的形成奠定了基础;苏州位居省级行政单元的交界,因此苏州与作为省会城市的南京构成了广义上的双核结构模式;上述因素的综合作用,使得我们可以构建起沪宁沿线城市合理分工的多重空间组合模式。 相似文献
16.
沈阳-大连区域旅游"双核"结构模式探讨 总被引：11，自引：0，他引：11
区域旅游是旅游发展的必然趋势,空间结构是区域旅游研究的重要内容。"双核"结构是一种比较高效的区域空间结构形态,由某一区域内的中心城市和港口城市及其连线所组成。这一理论提供了一种区域旅游发展空间结构及旅游城市间相互作用机理的解释模型。沈阳和大连在区域旅游发展过程中形成了典型的"双核"结构。文章着重分析了两市形成旅游"双核"结构的基础及耦合机理,以期使"双核"理论在旅游发展中起到抛砖引玉的指导作用。 相似文献
17.
中国空间格局的规律认知与理论提炼 总被引：1，自引：0，他引：1
胡焕庸线、“T”型模式以及双核结构,可归纳为“一线两轴双核”结构,是不同时期中国人文地理学者对于中国空间格局的规律认知和理论提炼。胡焕庸线属于自然地理学地域分异规律在人文地理学中的延伸和拓展,遵循的是均质区域的基本假设;“T”型模式和双核结构则超越了地域分异规律的分析思路,遵循的是功能区域的基本假设。其中,“T”型模式是陆大道提出的点轴系统理论在中国的实践应用。从现象看,双核结构附属于“T”型开发模式,但后继研究实现了由特殊向一般的转化,完成了科学发现、机理分析、数学推导和实践应用的全过程科学研究,成为一个普适性较强的区域空间结构理论。从理论层面而言,分别基于均质区域和功能区域假设的胡焕庸线和“T”型模式属于空间分异规律的分析结果,属于地理学中的个例性理论;双核结构则属于符合一般科学意义上的普适性较强的理论。显然,胡焕庸线、“T”型模式和双核结构三位一体的分析,一方面表明中国是一个非常适合进行区域分析并在此基础上进行地理学规律和理论提炼的国家;另一方面,本文的研究可为区域空间结构规律的总结和人文地理学理论的提炼提供研究思路和方法论角度的启迪。 相似文献
18.
基于公路客流的中国城市网络结构与空间组织模式 总被引：32，自引：8，他引：24
多视角和多尺度城市网络逐渐成为认识空间关系的主要途径。公路流数据具有显著的空间依赖性和距离衰减特性,对于刻画区域尺度空间关系具有重要意义。基于全国地级行政单元间的公路客运流,论文尝试刻画中国城市网络功能结构和区域效应,并对其空间组织模式进行特征提取和规律挖掘,以期能够为城市网络研究提供新的方法支撑和认知视角。研究结果表明：① 基于公路流的城市网络空间形态表现出强烈的空间依赖性和层级特征,与中国主要城市群分布存在较大程度的空间耦合,更多体现的是区域尺度的空间关系及核心—外围组合关系;② 通过社区发现算法识别出19个城市经济区,其空间内涵主要包括行政区经济、巨型区域溢出效应和核心—边缘结构等;③ 不同地域系统内城市网络自成体系,表现出显著的空间依赖性和多元的空间组织模式,多层次、流动性和网络化的地域系统格局凸显;④ 从空间形态上看,区域城市网络空间结构大致可划分为单中心结构、双核心结构、多中心结构和低水平均势结构等区域关联形态,并以单中心发育模式为主。 相似文献
19.
对于特大城市郊区建设用地效益的比较研究,有助于判别不同地区之间发展质量差异性,以此为特大城市区域资源的合理分配与预测提供支撑。本文基于“核心-边缘”理论,在既有建设用地效益评价方法的基础上,构建了兼顾同级别地区（市郊区县）与不同级别地区（市郊区县与中心城区）之间的“横向-纵向”效益特征模型。在对市郊区县之间效益相对优势比较的基础上,增加各市郊区县与中心城区的效益等级比较维度,并完善“人口-经济-空间”多系统综合效益评价方法,实现该模型的量化评估。对特大城市郊区建设用地效益的比较研究模型实现了以下两方面的优化：其一,以人口-经济-空间三系统的建设用地效益取代以往以人口、经济单一系统效益比较方法,可实现对社会经济要素在建设用地投入约束下的不均衡性评估和效益机制分析;其二,增加与中心城区比较的纵向维度比较,可在市郊区县相对优势判断基础上,进一步明确其在特大城市区域等级中的变化趋势,增加效益评估的多维性。本文以天津市11个市郊区县为实证研究,得到以下研究结论：① 从天津市郊区区域效益等级方面,从单一节点逐渐变为京津滨海轴向拓展,多核心的区域多极网络空间结构并未完全建立,并呈现较弱的轴带发展趋势。从纵向效益及多维模型判断,多数区县效益特征模型呈现边缘化增长模式,郊区整体效益等级趋同且降低。② 中心城区核心极化特征明显,近远郊效益“扁平化”结构显著。市郊区县与中心城区效益等级差距更大且缺乏中间梯度层级。主要表现在近、远郊各自效益相对趋同而两者之间差异减弱。由此,控制郊区土地资源供给、优化不同效益区域的产业发展模式可有效提升郊区建设用地效益,优化区域空间发展结构。 相似文献
20.
Understanding spatial structures and organizational patterns of city networks in China: A highway passenger flow perspective 总被引：6，自引：2，他引：4
The use of multi-perspective and multi-scalar city networks has gradually developed into a range of critical approaches to understand spatial interactions and linkages. In particular, road linkages represent key characteristics of spatial dependence and distance decay, and are of great significance in depicting spatial relationships at the regional scale. Therefore, based on highway passenger flow data between prefecture-level administrative units, this paper attempted to identify the functional structures and regional impacts of city networks in China, and to further explore the spatial organization patterns of the existing functional regions, aiming to deepen our understanding of city network structures and to provide new cognitive perspectives for ongoing research. The research results lead to four key conclusions. First, city networks that are based on highway flows exhibit strong spatial dependence and hierarchical characteristics, to a large extent spatially coupled with the distributions of major megaregions in China. These phenomena are a reflection of spatial relationships at regional scales as well as core-periphery structure. Second, 19 communities that belong to an important type of spatial configuration are identified through community detection algorithm, and we suggest they are correspondingly urban economic regions within urban China. Their spatial metaphors include the administrative region economy, spatial spillover effects of megaregions, and core-periphery structure. Third, each community possesses a specific city network system and exhibits strong spatial dependence and various spatial organization patterns. Regional patterns have emerged as the result of multi-level, dynamic, and networked characteristics. Fourth, adopting a morphology-based perspective, the regional city network systems can be basically divided into monocentric, dual-nuclei, polycentric, and low-level equilibration spatial structures, while most are developing monocentrically. 相似文献