基于特色产业簇群的城市群空间结构优化研究

城市群在区域经济社会发展中的作用越来越重要。阐述了产业簇群理论、层域理论、空间相互作用理论和生态学理论等城市群空间结构优化依据。深入分析了特色产业簇群视角的城市群空间结构演变过程。构建了全球、国家和区域等不同尺度的廊道组团网络化城市群空间结构优化模式。最后,作者提出了思想观念创新、市场一体化建设、城乡统筹协调发展、特色产业簇群培育等城市群空间结构优化路径等。     

广州城市产业用地供应规模和结构时空特征及机制

根据2007—2020年广州土地供应结果,利用数理统计和空间分析等方法探讨了城市产业供地规模和结构时空特征及机制。研究发现：(1)供地规模和存量用地占比上升,供地向重点开发区集聚。(2)第二产业供地比重下降,制造业下降明显。(3)第三产业供地比重上升,流通和社会公共需求服务部门上升明显。(4)46种行业供地比重变化可分持续下降、持续上升、先降后升、先升后降、波动类型。(5)各圈层供地结构存在差异,但均以房地产为主。(6)供地组合可分5大类,10个亚类,以生产和生活服务部门为主。(7)供地受政策工具、土地市场、集聚扩散、产业互动、产业生命周期和特殊城市本底等方面影响。     

INDUSTRIAL DIVERSIFICATION IN THE CANADIAN URBAN SYSTEM

On the basis of a statistical analysis of their employment profiles, Canadian cities are grouped into four economic categories: manufacturing, mixed, nodal, and a heterogeneous group containing political, military, and mining towns. Indexes of industrial diversification are calculated for all cities for 1951, 1961, and 1971 using comparable data for the three years. It is shown that industrial diversification is significantly related to the economic typology and also to city size; but city size is not related to economic type. Through time, most cities become more diversified as they grow larger, lending support to the theory of import substitution.
Si on se réfère à une analyse statistique de leurs profils d'emploi, on peut regrouper les villes canadiennes en quatre catégories économiques: industrielles, mélangées, nodales, et un groupe hétérogène composé de villes à vocation politique, militaire, et minière. On calcule les indices de diversification industrielle de toutes les villes pour 1951, 1961, et 1971 en utilisant des données comparables pour chaque année. Ils montrent que la diversification industrielle est liée d'une manière significative à la fois au type d'économie et à la taille des villes, mais que celle-ci n'est pas fonction du type d'économie. Au fil du temps, la plupart des villes diversifient leurs activités au fur et à mesure de leur croissance, ce qui vient à l'appui de la théorie du remplacement des importations.     

LOCATIONAL FACTORS IN THE DECLINING INDUSTRIAL COMPETITIVE ADVANTAGE OF THE NEW YORK URBAN REGION*

This paper investigates the locational factors that contributed to the decline of the New York urban region's industries during 1972-1975. Based on the static concept of a specialization index, a dynamic comparative advantage index is constructed. A model is then formulated to test the hypothesis that regional competitive advantage (vis-à-vis the nation) is a function of relative disparities in the change of these locational factors. Regression results show that the region's competitive advantage is influenced positively by the differential rate of change in market size, by the differential profit rate before tax, and negatively by the differential rate of change in unit labor cost and in unit energy cost. The differential tax rate does not seem to affect the region's competitive advantage. Nevertheless, a progressive corporate income tax structure tends to neutralize the beneficial effects of the economies of agglomeration and the urban attraction of the region.     

城市文化产业园区建设的区位因素分析

随着文化产业在我国的发展,城市文化产业园区的建设在各地日益兴起。本文在探讨文化产业园的概念、内涵、类型及目前我国发展现状的基础上,对城市文化产业园区在建设过程中的区位因素进行了探讨分析。认为现阶段影响我国城市文化产业园区建设的主要区位因素为:文化资源禀赋、制度因素、信息技术、人才智力资源。最后讨论了城市文化产业园区区位选址中应注意的问题。     

中国城市职能结构的特征研究

本文利用1999年的城市数据库和纳尔逊分类方法分析了我国城市职能的基本特征,对各行业的就业频率分布曲线进行了分析,并比较了不同城市规模、不同地域城市职能差异,认为我国城市工业职能较强,就业比重较大;城市工业专业分工程度较低;我国城市职能随城市规模变化出现一定变化规律,建筑业比重随城市规模的增大而减小,科教文卫等服务业随着规模的增大而增大;我国城市职能结构表现在空间上的差异是东部城市工业职能较强,西部城市行政、科教等服务业就业比重较高。     

REGIONAL INDUSTRIAL STRUCTURE AND ECONOMIC GROWTH AND INSTABILITY*

ABSTRACT. National and regional employment patterns are subject to growth-instability tradeoffs. This paper applies the portfolio selection model to detailed employment data for the U.S. economy and selected states. Empirical results indicate that growth-instability trade-offs exist in a form not previously understood. The paper also identifies growth and stabilization potential by identifying stabilizing sectors.     

乌兰察布市产业结构的偏离一份额分析

随着西部大开发的实施,乌兰寮布市结构调整正积极地推进。偏离一份额分析法适合于分析区域产业结构的变动对区域经济增长的影响。论文在分析鸟兰寮布市三次产业结构特征的基础上,以内蒙古自治区为参照系,采用偏离一份额分析法,全面剖析鸟兰寮布市三次产业结构现状,从而乌兰察布市的在自治区准确定位提供依据。     

乌兰察布市产业结构的偏离-份额分析

随着西部大开发的实施,乌兰察布市结构调整正积极地推进。偏离-份额分析法适合于分析区域产业结构的变动对区域经济增长的影响。论文在分析乌兰察布市三次产业结构特征的基础上,以内蒙古自治区为参照系,采用偏离-份额分析法,全面剖析乌兰察布市三次产业结构现状,从而乌兰察布市的在自治区准确定位提供依据。     

PRICING POLICY REACTIONS TO AGGLOMERATION IN A MARKET WITH SPATIAL SEARCH*

ABSTRACT. Price dispersion (variation) and agglomeration are common characteristics of spatial markets, in particular, markets with imperfect consumer information and search. However, pricing and location strategies in these markets are not well analyzed since spatial search is difficult to model without restricting the spatial dimension of the problem. This paper analyzes pricing and location strategies in a market with spatid search using a probabilistic modeling strategy that does not restrict search patterns in the plane. Specifically, the analysis considers the pricing strategy of an isolated firm in response to the agglomeration of competing firms. Results indicate that spatial and temporal price dispersion are effective responses to competitors'agglomeration. However, the relative effectiveness of these strategies varies with market conditions. In addition, agglomeration can have some counterintuitive effects. This paper also provides insights into existing theories of spatial search and spatial competition in spatially-restricted (linear and circular) markets.     

CHANGES IN THE NATURE OF URBAN SPATIAL STRUCTURE IN THE UNITED STATES, 1890–2000*

ABSTRACT This paper documents the long‐run trends in the average densities and density gradients of urban areas in the United States. The data show that between 1890 and 2000 the average densities of cities and metropolitan areas rose and fell but that the density gradients of urban areas generally declined monotonically over time. While it is beyond the scope of this paper to estimate the causes of these changes, this paper argues that a complete understanding of the changes in the nature of US urban spatial structures is likely to go beyond the standard explanations based on the monocentric city model such as decreases in transportation costs and increases in household incomes.     

THE 'YAN TATSINE DISTURBANCES IN KANO—A SEARCH FOR PERSPECTIVE

Thursday, December 18, 1980 was a bright clear day in Kano, a welcome relief from the thick harmattan dust of the previous week. But that afternoon, a dark column of smoke rose up over the city. Word soon spread that the smoke came from trucks set on fire during a clash between police and followers of an obscure, and seemingly eccentric Muslim preacher by the name of Mallam Muhammadu Marwa, who was popularly called by the derisive nickname of Mallam Maitatsine. This nickname was derived from a Hausa phrase which he often used in his public preaching, "Wanda ba ta yarda ba Allah tatsine," meaning roughly, "May God curse whoever doesn't agree with me." Over the next ten days, Kano, the largest city in northern Nigeria, was engulfed in fear and confusion.¹