HOUSING CONSUMPTION DECLINES WITH INCOME IN THE OPEN‐CITY MODEL: THEORY AND EMPIRICAL EVIDENCE

This paper demonstrates that the standard urban model (SUM) has important, previously unknown, and rather counterintuitive predictions about the determinants of housing consumption in cities. For example, the SUM predicts that, as higher wages in the central business district prompt city growth, the housing space per household falls, that is, rising income is associated with falling housing consumption. Empirical testing using a specially constructed panel data set of U.S. cities, confirms this prediction. When city size, income, and housing price rise, housing space per household falls.     

Third-world development: urbanizing for the future

This article reviews some issues reflected in the 1996 UN Habitat II agenda and recent research on urbanization. The themes of the 1996 Habitat conference were urban development, urban poverty, and governance, civil society, and social capital. It is expected that over 50% of total world population will live in cities in the year 2000. Cities are viewed both as engines of economic growth and centers of severe economic, environmental, and social problems. There is some disagreement about whether cities are rational economic structures or what the World Bank's urban agenda is and its relationship with macroeconomic policy. Discussions of global urban issues are criticized for their neglect of issues of equity and poverty, cultural diversity, and identity and representation. Habitat II also stressed urban sustainability. There is growing recognition that urban management involves more than the "Brown Agenda" of environmental and physical aspects of urban growth. Recent studies identify how politics and power affect people's access to basic urban services. Urban economic activity can also contribute to environmental problems. Urban growth affects the provision of health services. Although there is not a consensus on the role of cities in expanding economic and social development and the best management practices, there is sufficient evidence to indicate that urban processes are varied throughout the developing world. The links between urban and rural areas differentiate cities and expose the need to understand the role of intermediate urban areas surrounding and between larger cities. Poverty has become increasingly urbanized, but the extent of poverty is unknown. Habitat II was an unprecedented effort to engage nongovernment groups, local government staff, trade unions, and the private sector and to emphasize community participation. Networks of trust and reciprocity are key to solving poverty, inequality, and disempowerment problems.     

CITIES,WAGES, AND THE URBAN HIERARCHY

In this paper, we estimate the size of the wage premium necessary to compensate for remoteness incurred by workers compared to the city size productivity effects. We construct five urban hierarchy tiers for cities in Chile based on their level of remoteness from the urban system. We then contrast the effect generated by these variables on worker wages. We report a positive gradient of wages the higher the size of the urban tier and a loss in wages that can reach 35 percent for more remote cities.     

THE SOURCES OF URBAN DEVELOPMENT: WAGES,HOUSING, AND AMENITY GAPS ACROSS AMERICAN CITIES*

ABSTRACT This paper asks whether worker utility levels—composed of wages, rents, and amenities—are being equalized among American cities. Using microdata on U.S. urban workers in 1980 and 2000, little evidence of equalization is found. Comparable workers earn higher real wages in large cities, where amenities are also concentrated. Moreover, population growth between 1980 and 2000 has not been significantly different in low‐ and high‐utility cities, suggesting that other forces are at work shaping the sorting processes that match workers and firms. We outline an alternative view of the drivers of change in the American urban system, and urban development more generally, by applying theory from economic geography.     

基于制度转型的中国城市空间结构研究初探

1990年代以来全球范围内的众多国家发生了重大制度转型,以中国为代表的社会主义国家转型引起了国际学者的广泛关注。城市空间结构是城市社会、经济发展的空间投影,对其理解也必然要从制度转型的深刻层面去加以认识。文章系统回顾了西方城市空间结构研究经历的城市形态研究、实证主义方法、政治经济学分析等过程,揭示出其基本走向是转向对深层制度性因素的关注。继而文章着重分析了中国制度转型的三个根本方面,并概要性地阐释了其对城市空间的影响,最后列举了相应的一些重要研究领域和基本方向。     

Spatial accessibility and equity of playgrounds in Edmonton, Canada

Assessing spatial equity with respect to urban public amenity provision involves examining the association between amenity distribution and population need for amenities. Geographic Information Systems in coordination with local spatial autocorrelation, were used to investigate the association between neighbourhood accessibility to playgrounds and demographic and social need for playgrounds in Edmonton, while considering differences in playground quality throughout the city. The primary objectives of this study were to assess whether playground provision, for location and quality, in Edmonton is equitable and, more generally, to investigate the role that amenity quality plays in assessing spatial equity. The results indicate that playgrounds are equitably distributed within Edmonton, with the highest-social-need neighbourhoods having the greatest accessibility to playgrounds. However, once differences in playground quality are considered, there is less of an association between high-social-need and high-accessibility areas. The findings suggest that greater attention be paid to differences in playground quality within Edmonton and that spatial equity researchers give greater consideration to amenity quality when evaluating spatial equity within cities.     

The Post‐Industrial “Shop Floor”: Emerging Forms of Gentrification in San Francisco's Innovation Economy

The San Francisco Bay Area in California is undergoing a technology‐driven wave of growth arguably more thoroughgoing than the first “dot‐com” bubble, fueling hypertrophic gentrification and tales of a deeply class‐divided, “Blade Runner kind of society”. While Silicon Valley is still the industry's employment center, San Francisco is seeing faster tech firm growth, and is transforming its downtown to become more “livable” and promoting public space as key to innovation. In this context, this paper offers a reading of urban public space not just as a consumption amenity but also as the “shop floor” of a labor process that goes beyond the walls of the firm to mobilize the social itself in the production of privately appropriated value. With innovation now the watchword of gentrification, the stakes of this shift oscillate between the total commodification of urban vitality and the recognition of the social process of value production itself.     

A revealed preference index of urban amenities: Using travel demand as a proxy

We introduce an index of urban amenities based on hotel night stays that can rank most US metros for the years 1990 through 2015. This naive index can be used on its own to study changes in amenity level or with other measures to reduce omitted variable bias. Researchers can also use the index to create panel datasets from more sophisticated cross‐sectional indexes. Empirical testing shows the bundle of amenities associated with hotel stays has substantial effects on variation in housing prices across cities and time, validating our proxy variable approach. Testing for an association with wages is inconclusive.     

Urban sprawl in Spain: differences among cities and causes

Urban sprawl has a major impact on the environment, public health and the socio-economic evolution of cities. The causes are numerous, being mainly related to the generalized use of the automobile in modern cities. Urban sprawl has been especially relevant in US cities since the 1950s, rapidly spreading to other cities in the rest of the world. This paper studies the case of Spain using recent data. Spanish cities have grown rapidly over the 90s and 2000s. The country has completed the process of urbanization and has suffered the effects of a major real estate bubble. In this context, we are interested in measuring and explaining where and why urban sprawl has appeared in Spanish cities. Digital mapping carried out around the year 2000 providing full coverage of Spain is used to calculate an Urban Sprawl Index. It is applied to all urban areas and municipalities throughout the country, providing an objective, comparable measurement of sprawl and identifying which areas are most affected by this phenomenon. A second stage of analysis is conducted in an attempt to explain the causes of the differences in sprawl among Spanish cities with a regression model based on the literature. We have found that the cases most affected by sprawl are the latest urban developments on the Mediterranean coast as well as certain areas in the vicinity of large cities: the mountains to the north of Madrid and the coastline near Barcelona and Valencia. In some cases, urban sprawl is starting to become a problem for the environment and urban sustainability, with important consequences for the future evolution of the affected cities.     

SOMETIMES CLOSE IS GOOD ENOUGH: THE VALUE OF NEARBY ENVIRONMENTAL AMENITIES*

ABSTRACT An extensive empirical literature exists, showing that variations in region‐specific amenities can account for persistent differences in real wages across regions. However, this literature has considered only amenities in the same location as the household. This paper argues that environmental amenities at some distance from but accessible to urban areas may lead to negative compensating wage differentials. We use a general equilibrium framework and data from the 1995 Current Population Survey to calculate implicit amenity prices based on measures of distance to environmental amenities. Our results suggest that amenities outside the metropolitan area do generate compensating wage differentials, as workers are willing to accept lower wages to live in accessible proximity to “nice” places. This implies that these places provide a positive externality to those communities that find them accessible. The estimated effects are quantitatively important, suggesting that these externalities should be taken into account in policy making.     

A HEDONIC MODEL OF INTERREGIONAL WAGES,RENTS, AND AMENITY VALUES*

ABSTRACT This paper develops a general multimarket hedonic model appropriate for a national, interregional study of wages, housing prices, and location-specific amenities. The model encompasses the effects of interregional location, intraurban location, and city size. Typically, hedonic studies focus on a single market such as labor or housing and ignore interactions implicit in a more global compensation mechanism. Examination of the comparative statics of our model indicates that single-market differentials are partial prices and are unreliable measures of amenity values in an interregional context. Unbiased amenity values are estimated for a comprehensive set of amenities using data on housing prices for 34,414 households and wages for 46,004 workers from the 1980 Census of Population and Housing. Statistically significant differences in housing prices and wages are found due to amenities.     

城市系统演化的复杂性研究

城市演化是由复杂多样的动力和主体推动的,受全球、国家和地方尺度的多重影响,表现出复杂的演化规律和特征。笔者认为城市系统演化模式与过程的研究需要发展一个基于复杂性理论的跨学科的分析框架。本文首先提出一个城市系统演化的概念模型,然后运用层次理论分析了城市系统演化的复杂相互作用,论述了城市系统演化的组成异质性、时空复杂性、决策复杂性等复杂性表征,最后讨论了城市系统演化的各种复杂规律。     

空间扩容背景下长三角城市群陆路交通联系时空演化

城市群空间扩容有赖于城市间交通联系的强化。文章以县域为研究单元,探讨长三角城市群由16个设区市扩容至26个设区市,各单元经由陆路交通与中心城市及设区市市区的交通联系时空演化。结果显示：(1)空间扩容引致公路通达时间有所增长,但趋于均衡化发展。(2)扩容后普速铁路网络通达时间明显增加,尽管连通度有所提升,但连通强度明显下降;高铁网络通达时间显著低于普铁网络,且连接指数显著高于普铁网络,中心城市在高铁网络中优势突出。(3)主要得益于高速铁路发展,扩容后陆路可达性及其均衡性均有所提升,交通发展很好地支撑了城市群扩容;受城市群扩容及陆路交通发展的共同作用,可达性格局发生了明显变化,长江的阻隔效应更为明显。     

基于网络大数据的城市内部便利性供需空间特征研究——以南京市中心城区为例

基于便利性的城镇发展战略对于新型城镇化转型具有重要意义。着眼于城镇居民生活质量的提升,围绕供需维度构建便利性测度体系,以多源网络大数据为支撑,分析南京市中心城区便利性的供需空间特征。结果表明,中心城区便利性供需关系多样,空间分布大体类似,倾向于多类聚合分布,并呈现较为明显的圈层集聚特征;主城便利性多供小于求,副城则以低供需平衡及供小于求为主,各公共活动中心便利性发育水平不一;中心城区整体便利性供需水平不高,其空间分布在数量及连续性方面均呈现低供需平衡、低供-中需以及中供-低需依次降低的模式。     

西方城市更新发展历程和政策演变

西方城市更新大致经历了"清除贫民窟-福利色彩社区更新-市场导向旧城再开发-社区综合复兴"四个发展阶段,各阶段更新政策的历史发展背景、参与对象、更新途径和更新结果各异。通过比较不同阶段城市更新特征看出,西方城市更新理论实现从形体主义规划思想向人本主义规划思想的转变,城市更新发展理念在问题导向下不断发展成熟,城市更新运作模式体现政府、私有部门和社区居民的多方参与倾向。对我国城市更新的启示包括:城市更新政策演变与城市发展过程的关系,城市更新关注对象的讨论,以及政府作用和城市更新多方参与者的利益制衡。     

Beautiful city: Leisure amenities and urban growth

Modern urban economic theory and policymakers are coming to see the provision of consumer‐leisure amenities as a way to attract population, especially the highly skilled and their employers. However, past studies have arguably only provided indirect evidence of the importance of leisure amenities for urban development. In this paper, we propose and validate the number of tourist trips and the number of crowdsourced picturesque locations as measures of consumer revealed preferences for local lifestyle amenities. Urban population growth in the 1990–2010 period was about 10% points (about one standard deviation) higher in a metro area that was perceived as twice more picturesque. This measure ties with low taxes as the most important predictor of urban population growth. “Beautiful cities” disproportionally attracted highly educated individuals and experienced faster housing price appreciation, especially in supply‐inelastic markets. In contrast to the generally declining trend of the American central city, neighborhoods that were close to central recreational districts have experienced economic growth, although at the cost of minority displacement.     

The changing geography of the Canadian manufacturing sector in metropolitan and rural regions, 1976–1997

This paper documents the changing geography of the Canadian manufacturing sector over a 22‐year period (1976–1997). It does so by looking at the shifts in employment and differences in production worker wages across different levels of the rural/urban hierarchy—central cities, adjacent suburbs, medium and small cities and rural areas. The analysis demonstrates that the most dramatic shifts in manufacturing employment were from the central cities of large metropolitan regions to their suburbs. Paralleling trends in the United States, rural regions of Canada have increased their share of manufacturing employment. Rising rural employment shares were due to declining employment shares of small cities and, to a lesser degree, large urban regions. Increasing rural employment was particularly prominent in Quebec, where employment shifted away from the Montreal region. The changing fortunes of rural and urban areas were not the result of across‐the‐board shifts in manufacturing employment, but were the net outcome of differing locational patterns across industries. In contrast to the situation in the United States, wages in Canada do not consistently decline, moving down the rural/urban hierarchy from the largest cities to the most rural parts of the country. Only after controlling for the types of manufacturing industries found in rural and urban regions is it apparent that wages decline with the size of place .     

On the role of amenities in models of migration and regional development

"The role of location-specific amenities in human migration decisions, and subsequently regional development, is explored. A framework is developed which motivates a new assessment of existing alternative models of regional development, indicating the need for additional modeling efforts which focus upon amenities as critical elements in such analyses. The approach hinges upon the notion that amenity values are capitalized into wages, rents, or other local prices. This process of capitalization enables researchers to explore the implicit value that society places upon amenities, which can then be used in assessing future regional-development trends in a more comprehensive manner."     

个体行为视角下中小城市居民就医空间及社会分异研究——兼议与特大城市比较

基于日常医疗消费出行调查数据,剖析了中小城市居民日常就医出行空间社会特征,并与特大城市比较,结果表明：中小城市居民日常就医选择以市域最高等级综合医院为中心,形成"一超多强"多中心结构,出行空间呈"三带四圈层"的核心-外围形态。低收入群体近距离就医特征突出,出行空间小;高收入群体消费选择较为多元,出行时空范围广。中小城市居民日常就医首选私人诊所,出行距离是首要考虑因素,出行空间与收入水平呈正相关;特大城市居民日常就医首选区级医院,更重视医疗机构社会声誉,与中小城市存在显著差异。     

Post-socialist Sprawl: A Cross-Country Comparison

This paper presents a land-use change analysis of five Central and Eastern European (CEE) countries. We utilize CORINE (Coordination of Information on the Environment) Land-Cover and Urban Audit data for two distinct time periods: 1990–2000 and 2000–2006 aggregated at urban, suburban and non-metropolitan geographies. The literature on post-socialist cities suggests that urbanization rates and patterns in the post-socialist period are quite variable and divergent, both “inter”nationally and “intra”-nationally, and we expect to find both spatial and temporal differences. We compare and contrast urbanization patterns at the national scale, using cities and their functional urban regions as the unit of comparative analysis. Our results show that unlike other eastern European countries, metropolitan areas in the former German Democratic Republic began sprawling (defined as a decline in urban density) in the 1990s. Similar changes only became visible in other CEE countries later during the 2000s. We also demonstrate that larger cities which were better connected to the political elite and more economically integrated with global investment patterns experienced more extensive urban sprawl than their smaller and mid-sized counterparts.