Hygienisation,Gentrification, and Urban Displacement in Brazil

This article engages recent debates over gentrification and urban displacement in the global South. While researchers increasingly suggest that gentrification is becoming widespread in “Southern” cities, others argue that such analyses overlook important differences in empirical context and privilege EuroAmerican theoretical frameworks. To respond to this debate, in this article, we outline the concept of higienização (hygienisation), arguing that it captures important contextual factors missed by gentrification. Hygienisation is a Brazilian term that describes a particular form of urban displacement, and is directly informed by legacies of colonialism, racial and class stigma, informality, and state violence. Our objective is to show how “Southern” concepts like hygienisation help urban researchers gain better insight into processes of urban displacement, while also responding to recent calls to decentre and provincialise urban theory.     

从北京,上海,广州等大城市形态转变的模式和过程中看中国的城市转变

新的城市和经济的发展正在改变着中国城市基本的自然形态和结构。在城市发展的过程当中,能折射出国家动态的经济,社会和政策条件的新的模式正逐渐取代了由浓厚的意识形态所形成的带有鉴别性的模式。论文提供了北京,上海和广州等大城市形态转变的模式和过程的分析。重点谈到了土地使用的专业化,交通循环和建筑的高度,规划的过程,城市的更新及房地产市场的私有化等问题。20世纪见证了,中国大城市外形和构造的戏剧性改变。中国城市国际化的趋势日趋明朗化。中国文化的独特性以及中国社会主义制度的独特性,表明了中国城市的将来仍然与众不同。     

企业主义视角下大城市保障房建设的策略选择及其社会空间后果

城市企业主义是理解地方政府行为与城市空间变迁的重要政治经济视角,在中国推进经济全球化和住房市场化的背景下,企业化的地方政府,特别是大城市政府,在保障房的建设实践中往往采取偏向性的策略选择。本文着重讨论企业主义视角下大城市政府保障房建设的策略选择及其社会空间后果。研究发现,大城市政府主要通过实施保障房政策的异化和保障房住区的边远化策略,来履行其住房保障职责。然而,这种选择性策略带来的直接的社会空间后果是低收入群体的边缘化,具体表现为外来务工人员等在保障政策上的边缘化,以及保障房居民在社会空间上的边缘化。文章进一步指出,保障房应回归其保障本位,以满足低收入群体的真实需求。     

国内外城市功能疏解研究进展

由于城市聚集效益的存在,城市功能不断向中心城区集聚,过多的功能集聚带来了一系列城市问题,城市功能疏解的研究亟待开展。文章首先从人口疏解和产业疏解两大模块以及土地利用变化方面对功能疏解的测度方法进行述评,并简要分析了功能疏解的必要性和动力机制;其次对国内外功能疏解的经验进行梳理;再次对功能疏解的成效进行评价;最后对国内外功能疏解研究内容进行述评。总体而言,与国外研究相比,国内研究起步较晚,但内容上与国外研究基本相似;然而在方法上国内研究目前仍以数量分析为主,缺乏相关测度模型的构建。随着国内城市功能疏解实践的推进,以及在中国特殊的土地和户籍等政策影响下,功能疏解的方法和理论研究将不断完善。     

我国城市郊区化研究的进展与展望

由郊区化的概念及当前我国郊区化研究的争执入手,评述了20世纪90年代以来我国城市郊区化研究的进展,着重从以下几个方面作出进一步研究的展望:①我国第五次人口普查与郊区化研究;②城市季节性郊区化研究;③城市社会空间扩展的研究;④宏、中、微观多元郊区化机制的研究;⑤郊区化研究种类的拓展;⑥城市郊区化的类型与研究方法的多样化;⑦区域城市郊区化研究。     

西方社会空间视角下的郊区化研究及其启示

作为一种分散型城市化,郊区化始于20世纪20年代,盛于二战后的发达国家。西方早期的郊区化研究主要集中在郊区化的发展浪潮,郊区化的界定方法、发展机制、后果和政府调控等方面,90年代所提出的"新郊区化"概念将郊区化与边缘城市、郊区次级就业中心的发展联系在一起。21世纪以来,社会空间成为西方郊区化研究者最关注的话题。本文基于近年西方学者关于郊区化研究的最新文献,从郊区化与居住空间重构、郊区化与住房选择和分异、郊区化与居民通勤行为、郊区化与居民生活空间、郊区化的社会影响等方面总结了西方学者在社会空间视角下的郊区化研究方面所取得的研究成果。然后,分析了西方研究议题转变和研究方法创新对中国郊区化研究所带来的启示。最后,从研究视角拓展、定性方法应用、微观机理探讨、多重互动模式建构等方面对未来中国郊区化的研究进行展望。     

城市收缩现象、过程与问题

城市并不总是增长。在人口峰值过去后人口收缩将是部分城市面临的一个不可避免的趋势。这将是我国和全球城市发展的新议题。根据国际上的最新进展,阐释了收缩城市的概念、起源和影响因素,描述了城市收缩的过程及表现,介绍了国外城市的应对措施;指出国内研究主要还集中于资源型城市的衰退方向;强调城市收缩作为客观的城市发展过程,具有不可避免性,也有别于城市衰退,需要更加客观科学地对待。初步介绍和探讨了国外城市在人口减少时采取的城市规划和管理方法,包括如何通过公众参与、产业转型生态环境保护、土地利用规划调整和交通住房改造等措施,来促进城市发展和提高居民生活质量,为我国的城市发展和转型提供有益启示。     

Gendering the city: the lived experience of transforming cities,urban cultures and spaces of belonging

Debates centred on ‘planetary urbanisation’ have raised questions over the adequacy of existing theories and epistemologies to explain the quantitative and qualitative transformations of cities. However, this theorization of the urban has met with opposition from post-colonial and feminist researchers amongst others. The comparative, empirical research in this collection, from Bolivia, India and Turkey, highlights that the city remains an important analytical and concrete framework, demarcated by contingency and cultural change through which residents must navigate. In particular we focus on the specificity of women’s lives and their capacity to problematise universalist theory, documenting their interrogation of simplistic binaries such as modern/traditional; their innovative approaches to informal settlement, housing and markets; their production of urban knowledge in order to negotiate the city; and processes and practices of mobility, experimentation, risk taking and aspiration that contest or support a myriad of urban imaginaries. Whilst not rejecting the need for theories that allow comparative perspectives on cities, our conclusions underscore the importance of recognising the multiple logics that generate city space and urban cultures, and the consequent need to parochialise the empirical basis of theories that claim to be global in outreach.     

Confronting Out-Migration and the Skills Gap in Declining German Cities

High-skilled groups are regarded as a key asset for economic growth and urban development and are thus increasingly targeted by cities. Within this context, the paper analyses the effects of urban decline and intra-national migration trends on cities. The impact of both processes on population development varies considerably between cities and regions and calls for micro- and macro-level policy responses. The contribution focuses on the local impact of the (out-)migration of higher-skilled groups and addresses the research questions: how do local stakeholders and decision-makers evaluate the consequences of the out-migration of highly qualified residents and how are they responding? Our analysis combines the findings of two research projects and draws mainly on qualitative data. The case studies are located in Germany and comprise three medium-sized cities outside of major agglomerations and three large cities within metropolitan areas. The six cities share the common characteristic of urban decline as a result of structural change and have been experiencing population decline. While medium-sized cities lose the highly skilled after they complete schooling, larger old industrial cities lose them after they complete higher education degrees. The paper discusses the implications of intra-national migration for these cities.     

The specifics and spatial structure of circular migration in Russia

Abstract

This article aims at distinguishing recurrent population movements within the territory of the Russian Federation between urban localities of different sizes and rural areas in connection to the processes of urbanization, suburbanization, and de-urbanization. Incomplete urbanization and the strong polarization of socio-economic space in Russia have resulted in two powerful contradictory population flows: centrifugal seasonal sub- and de-urbanization and centripetal labor migration from rural and small towns to large urban centers. The article discusses three forms of recurrent population mobility in Russia: (1) daily commuting of urban and rural inhabitants within metropolitan areas; (2) commuting to large cities and their suburbs for long-term employment intervals (weekly, monthly, etc.), (3) second-home commuting to countryside dachas. Unfinished urbanization in Russia not only attracts rural and small towns’ population to major cities but also keeps it within the latter. It slows down the real de-urbanization and induces specific dachas (second-home) suburbanization/de-urbanization, with these processes being closely interrelated. An opportunity to earn money in cities together with the impossibility of moving to major centers due to expensive housing encourages households to remain in small towns and rural areas. Meanwhile, inhabited rural localities (even ones distant from cities) attract seasonal population (dachniks).     

Beyond the crabgrass frontier: industry and the spread of North American cities, 1850–1950

The conventional story of suburbanization in Canada and the United States portrays an outward movement of residences from the cities that only since World War II has been fuelled by the dispersal of employment to the urban fringe. This prevailing wisdom needs considerable revision. In this essay we present a theoretical interpretation of industrial suburbanization. We argue that the outward spread of factories and manuÍfacturing districts has been a distinctive and important feature of North American urbanization since the middle of the nineteenth century. The paper begins with a discussion of how industrial decentralization has been repeatedly misinterpreted as new and unprecedented, rather than an extension of past trends. In contrast to the prevailing interpretation, we claim that industrial suburbanization is the product of a combination of the economic logic of geographical industrialization, investment in real estate, and political guidance by business and government leaders. The result has been extensive, multinodal metropolitan regions.     

An Empirical Enquiry into the Impact of Urban Planning Policy on Urban Growth

Recent research has stressed the need to evaluate the economic implications of urban planning policy. In this article, we present empirical evidence on the impact of this policy on the population growth of towns and cities. A simple theoretical model serves to highlight the mechanisms whereby this policy may affect urban growth. The model yields a reduced-form equation which we estimate for the towns and cities of Andalusia (Spain). The empirical model strongly supports the claim that urban planning policy considerably affects urban growth and thus, the distribution of population across space. Our results suggest that urban planning policy is contributing to the reduction of diseconomies of agglomeration in larger cities. On the negative side, we find that urban plans are subject to obsolescence, which slows down growth.     

发达国家城市收缩现象及其对中国的启示

城市收缩是发达国家在工业化与城市化过程中普遍存在的现象,城市收缩对发达国家经济社会转型、城市空间结构转变产生了深刻影响,在对城市收缩有效治理过程中形成的精明收缩与弹性城市理论对快速发展的工业化国家具有积极的借鉴意义。本文对发达国家城市收缩的现象与事实进行了系统梳理与分析,分析了城市收缩的特征与空间模式,探讨了城市收缩的形成机制和城市收缩的应对措施,并对西方发达国家城市收缩现象对我国的启示形成了几点认识。     

Exploring the land development process and its impact on urban form in Hamilton, Ontario

The form of many Canadian cities has dramatically evolved over the past six decades due to urban sprawl. Several patterns can characterize this evolution including unlimited horizontal expansion of the city, leapfrog, and low‐density residential development at the outskirts, and widespread strip commercial and power centre retail development. Hamilton, Ontario is an example of a Canadian city that has experienced suburbanization and sprawled development for several decades. However, the nature of this sprawled development is unclear and its impact on urban form is not entirely understood. In this article, several hypotheses pertaining to sprawled land development and urban form are postulated and tested. The tests rely on point source data of the developed land parcels in Hamilton during the period 1950–2003. A number of spatial statistics techniques, including kernel estimation and complete spatial randomness (CSR) K‐function tests, are employed to examine the emerging nature of urban form. We hypothesize that while the city has been sprawling, the ongoing land development process is leading urban form into multinucleation. To support this assumption, we further hypothesize the existence of an interdependent spatial relationship between residential and commercial land uses at the emerging nuclei. Accordingly, we examine the strength of co‐clustering among these land use activities over time. The findings indicate that while the city has been sprawling, several consequent urban nuclei with mixed land use activities have been emerging and become more visible in recent years. This is an indication that the city's form is progressively becoming multinuclear. Furthermore, the estimates for the 1990s indicate interdependence between the locational patterns of residential and commercial land development. Co‐clustering between these two types of land uses is bi‐directional and occurs at a time lag of three to seven years. These findings affirm the existence of interdependence between land use activities at the observed nuclei, which support the emergence of a multinucleation.     

赛博空间视角下中国三大城市群网络特征——基于豆瓣跨城活动数据

随着全球化和信息化的推进,中国城市群内部联系成为区域研究的热点。本文以赛博空间为视角,以我国三大城市群城市的豆瓣同城数据为对象,通过点度分布、对称性、群集性和匹配性等指标对城市网络进行描绘与测度。实证研究显示:我国三大城市群的城市网络在赛博空间中呈现出多核心网络状的特征,北京、石家庄、天津、上海、杭州、南京、广州和深圳分别成为城市群中的枢纽或者次枢纽城市。高等级城市吸引人口集聚与跨越城市的联系增强的现象是同时存在的,一般城市在互动型活动上凭借其城市特色,同样吸引周边城市的关注。研究最后针对不同层级城市的活动容纳特征提出了相关规划建议。     

城市形态分维测算和分析的若干问题

本文讨论了城市形态分维测算和分形分析的几个常见问题,这些问题常使初学者感到困惑。主要论述如下内容:分维的性质、特征和基本含义,无标度区的城市地理学意义、判断和界定方法以及城市演化分析中的作用,城市形态分维分析的一般步骤,分维与其他参量的关系,等等。作者强调,要想避免研究中出现的伪分形现象导致的错误结论,必须有效利用双对数坐标图识别反映自相似性尺度范围的无标度区。     

全球化视角下的世界城市网络理论

城市诞生时就相互保持着联系,只有将城市纳入世界城市网络中才能正确把握城市产生和发展的本质。1980年以来在第三次全球化浪潮的背景下,世界生产要素和产品市场开始整合,世界城市的兴起是国际劳动分工在空间上的表达。Cohen、Friedmann、Sassen、Castells和Taylor等学者提出并发展了世界城市理论,世界城市网络理论已经成为研究城市问题的重要框架。联系数据的缺乏长期制约了世界城市网络的实证研究,二十世纪九十年代中期以来学者们创新性地解决了方法论的问题,对世界城市网络的各个层面进行了实证研究。     

The landscapes of professional farms in mid‐sized cities,France

In this paper, we provide a spatial analysis of agriculture in three mid‐sized French cities, with a particular focus on professional farms. The existence of important agricultural spaces inside the cities is confirmed. We reveal the persistence of a field‐based, market‐oriented agriculture in French mid‐sized cities, often ignored in studies on urban agriculture, and usually made invisible. Our results highlight the farms' diversity, as well as a diversity of farmers' viewpoints on the relations between urban and agricultural places. We emphasise the importance of three main determinants in the observed dynamics: the cities' geographies; the impact on farmers of land speculation and urbanisation; and the implementation of resistance and adaptation processes by some farmers. These results are discussed in relation to the literature on urban and peri‐urban agriculture.     

World Cities and Global Change: Observations on Monumentality in Urban Design

A prominent urban geographer presents a sweeping review essay on monumentality in the urban design of world cities. After outlining a number of the large, grand urban plans and projects of the past and present, he focuses on the four components of monumental urban design: comprehensive conceptions of legible urban form; iconic buildings; integrated urban transportation hubs; and planned downtown and midtown redevelopment projects. Concentrating on the trends prevailing at present and over the near future, the author notes factors that may exert a special impact on emerging world cities in Russia and China and argues for the importance of process in the geography of monumentality. Journal of Economic Literature, Classification Numbers: O18, R51, R53. 14 figures, 37 references.     

DIFFERENTIAL SUBURBAN DEVELOPMENT IN THE PRAGUE URBAN REGION

Numerous authors have asserted that suburbanization contributes to many problems in both suburban and inner city localities. Research of suburban development demonstrates variations in spatial patterns, the intensity of spatial processes, and the social and economic status of new suburbanites. While some forms of suburban development could cause serious problems throughout the urban region, other forms could be perceived as processes improving the quality of life in suburbia. This paper seeks to investigate different types of suburban development in the Prague urban region over the past fifteen years of transformation. The focus of my interest is residential suburbanization, which is one of the most significant spatial processes today in the settlement systems of post‐socialist countries. The theoretical part of the contribution deals with the differentiation of spatial processes changing the suburban zone. Here I discuss the concepts of several processes of suburban development and their distinctive impact on both suburban and inner city localities. The empirical part of the contribution is based on an analysis of migration flows in the various localities of the Prague urban region in the period 1995 to 2003. I attempt to describe the magnitude and spatial patterns of suburbanization and the composition of migrants to suburbia. The paper concludes with a discussion about the possible future development of suburbanization in the Prague urban region.