国外城市非正规性研究进展及启示

21世纪以来,西方城市研究界认为大部分城市发展将发生在发展中国家,新的城市理论也将产生在这些新的地理空间,而城市非正规性是其主要特征。本文首先对城市非正规性的演变进行了梳理,认为城市非正规性的研究具有对\"二元主义\"的超越,\"传统\"非正规研究的超越和认识论上的转变3个特征,并明晰了城市非正规性的理论内涵是一种管治模式;其次,认为制度变迁和城市非正规性研究之间的焦距在于国家、地方政府、企业和个体等行动者之间的相互作用,在此基础上总结出了城市非正规性互补式、补充式和让步式3种主要类型;最后,从政治、社会和文化三个维度总结了非正规性在中国形成的根源,并提出非正规性可以理解成为中国城市发展的一种模式,非正规实践及非正规制度蕴含制度创新的启示。     

制度变迁与中国城市的发展及空间结构的历史演变

我国的城市发展水平同经济发展水平的偏离,说明对城市发展及其空间结构演变分析不能仅局限在物质经济领域,需要我们寻求影响城市发展及其空间结构变化的新因素一制度因素,把制度作为影响城市发展及其空间结构的一个主要的变量,来对此加以解释。为此,本首先构建了“制度变迁一城市发展变化”的理论框架,然后用该理论从宏观和微观两个方面来检验1949-1998年间制度变迁对城市发展及其空间结构的影响。与西方国家的以市场经济为主要动力驱动型的城市发展模式不同,中国城市的发展及其空间结构的演变在很大程度上是制度变迁而诱致的结果。但不同的制度对城市数量增长、组织体系及空间布局和对城市空间结构演变的作用力度又不尽相同。改革开放后,由于制度变迁带来的激励作用,中国城市获得了快速发展,城市空间结构快速变化。但与此同时,中国城市化的发展水平与相同发展条件下的世界城市化水平的差距却在拉大。而且随着市场经济体制的逐步完善,影响城市增长及空间结构的演变力量的因素越来越趋于分散化,制度变迁对城市发展所带来的激励作用正在弱化。为适应新世纪我国城市发展的战略目标,需要进行体制创新,为中国城市的发展及其空间结构的演变提供新的制度支持。     

The acceleration of transitions to urban sustainability: a case study of Brighton and Hove

Cities raise major challenges and opportunities for achieving sustainability. Much literature on urban sustainability focuses on specific aspects such as planning practices, urban policy or the diffusion of more sustainable technologies or practices. However, attempts at understanding the mechanisms of structural change towards sustainability have resulted in the emergence of an interdisciplinary field of sustainability transitions research. Transitions research has developed a phase model of transitions in which predevelopment, take-off, acceleration and stabilization phases are distinguished. However, the acceleration phase has received limited attention so far. This is a crucial gap as policy-makers are keen to accelerate transitions. This paper aims to enhance our understanding of how local actions contribute towards accelerating urban sustainability transitions. It does so by testing an acceleration mechanisms framework through exploring the collective agency of local initiatives in urban sustainability transitions. Drawing on a case study of the city of Brighton and Hove (UK), the paper finds that despite favourable local political conditions, there is a lack of evidence of acceleration apart from in individual domains such as food or mobility. Progress is found to depend on the agency of initiatives to both scale up sustainable practices and embed these practices into local governance arrangements.     

The Impact of Local Environmental Advocacy Groups on City Sustainability Policies and Programs

American cities vary considerably in the degree to which they pursue sustainability. What explains this variation? One plausible cause of such differences is that sustainability may be more appealing to high‐income cities than to more economically challenged cities. Yet such strict economic determinism seems simplistic and removes politics from an inherently political process. The hypothesis here is that any such relationship between income and commitment to sustainability is conditioned by a city's level of environmental advocacy. The data utilized in this analysis are derived from two large‐scale data sources. One is a comprehensive inventory of sustainability programs and policies in 50 large American cities. The other is a set of surveys in those same 50 cities. The multivariate model supports the hypothesis. Controlling for income growth and the predisposition of policymakers to be supportive of sustainability (as well as other alternative explanations), a city's commitment to sustainability is strongly linked to the advocacy of environmental and sustainability groups in the policymaking process. The example of Sustainable Seattle is used to illustrate the linkages that would seem to underlie the statistical analysis.     

Urban smartness and sustainability in Europe. An ex ante assessment of environmental,social and cultural domains

The aim of the paper is to define a set of smartness and sustainability indicators applicable to European cities and to assess their outcome in an ex ante perspective with regard to the implementation of Europe 2020 strategy. Following the DPSIR (Driving forces, Pressures, State, Impact, Response) model, we select a bundle of indicators for three relevant sustainability domains (environmental, social and cultural), which are proper to the smart city definition. Then we define groups of homogeneous cities for each domain by using a two-step cluster analysis. Results show the existence of heterogeneous groups of cities that are likely to become smart in the cultural domain, side by side with groups of more developed urban areas that have acquired a substantial advantage in the environmental and social dimensions.     

城市群时代中心城市的影响腹地界定研究——以济南市为例

进入21世纪,我国进入城市群快速发展时期,而中心城市的辐射和带动是城市群形成发展的重要基础。本文以济南市为例,通过构建多指标体系,在测算城市中心性强度值的基础上,利用扩展断裂点模型在GIS软件支持下勾勒济南在区外、区内两个层次的影响腹地范围。研究表明:受不同城市作用力影响,济南在区外城市间的影响腹地范围基本吻合山东省西部行政边界,与当前济南都市圈的范围基本一致;而区内腹地范围明显大于济南行政区划,形成了中心城市的高地效应。结合研究成果,对济南城市发展提出诸如合理调整行政区划、改善基础设施和加强都市圈建设等发展建议。     

Urban research and child-friendly cities: a new Australian outline

Recent public debates about Australia's children and young people have begun to acknowledge the direct impact of urban development on their health and well-being. This paper reviews a broad range of trans-disciplinary literature addressing child-friendliness in contemporary Australian cities, drawing particular attention to the fact that even some of the most recognised texts on children and young people in Australia still make few references in their analysis to the issue of place and neighbourhood. More specifically, the paper points to two particular research challenges confronting the ongoing study of young people's well-being in urban areas, including (a) the need for a more thorough analysis, both conceptual and applied, about how children and young people's well-being is affected by different urban forms and by the social and ecological variations that occur throughout cities; and (b) the focus on younger children needs to be complemented by a focus on adolescents and young adults who in turn need to be actively involved in confronting these challenges.     

In spite of our own best interests: lessons from an interdisciplinary project on urban sustainability

To contribute effectively to academic discourse on urban sustainability, disciplines need to think outside their silos and work together more collaboratively. Although straightforward to posit in theory, the practical realities of bringing together people with different worldviews, languages and skills can be frustrating and lead to loss of motivation. This paper presents the findings from a qualitative study of interdisciplinary team working on an urban sustainability project. Through analysis of archival materials, observations and interviews, a major theme of motivation was uncovered and explored. We conclude with some suggestions for working more effectively interdisciplinary, urban sustainability projects.