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1.
Leapfrog development is a typical form of sprawl. This paper aims at analyzing the existence, size, and persistence of leapfrogging in a dynamic urban economic model with endogenous green amenities. We analyze whether incoming households choose to settle at the fringe of the city or to jump further away depending on their preferences and the structure of the city. We first provide an analytical treatment of the conditions and characteristics under which a first leapfrog occurs and show how the optimal choice is affected by the size of the city, income, commuting costs, as well as the size of the area where green amenities are considered. We then study how further leapfrogging and multiple urban rings may appear and be maintained in the long‐run equilibrium, and how infill processes take place through time.  相似文献   

2.
Housing benefits and income transfers realized by Section 8 program participants are examined. The distribution of benefits depends on income eligibility rules and the level of Fair Market Rents, the latter establishing an upper limit on the quality of housing available to households. By establishing Fair Market Rents for an entire urban area, program regulations tend to exclude the poor from better quality neighborhoods. Subsidy costs for newly constructed units are twice as high as for existing units. Income eligibility rules are such that many more households are eligible than can be supported, creating difficult problems of horizontal equity. Lowering Fair Market Rents or raising the required share of tenant's income paid in rent would tend to reduce these horizontal equity problems.  相似文献   

3.
Homelessness is a risk for growing numbers of immigrants. Largely as a result of low incomes, newcomers are more likely than the Canadian-born to spend over 50 percent of total household income on housing costs. Many newcomers suffer 'hidden homelessness'. They do not use shelters and other services, but share accommodation, couch-surf and rely on their social contacts for temporary and precarious housing. The adverse impact of low incomes on the housing experiences of Canadian newcomers is exacerbated in the outer suburbs of metropolitan areas where the supply of affordable housing is limited. This study explores the social backgrounds and housing experiences of immigrant households that are vulnerable to homelessness in outer suburbs through analysis of special tabulations from the 2001 census for York Region and interviews with representatives from local community organisations serving immigrant and low-income populations. The initial findings confirm that a high proportion of newcomers in York Region are at-risk of homelessness during the first 10 years of residence in Canada. Although renters are more vulnerable than homeowners, a substantial percentage of newcomers who are homeowners pay more than 30 percent of their total income on housing costs. The shortage of affordable rental housing in the outer suburbs exacerbates the impacts of low incomes, immigration status, household size and ethnoracial identities on immigrants' housing.  相似文献   

4.
Most Canadian urban centres are facing difficulties with public transport systems. As car ownership has increased, urban areas have experienced a long‐term decrease in per capita ridership. At present, a significant proportion of riders in most cities is considered to be transit captives, which usually refers to carless individuals or members of carless households. But, what about members of motorised households without effective or real access to a car as, for instance, two‐income households with only one car? Do these ‘restricted car users’ constitute a significant, but somewhat hidden, segment of the transit market? The initial purpose of this paper was to learn more about individuals with restricted or no‐car access who live in car‐owning households: Who are they? Where do they live? Do their numbers fluctuate significantly throughout the day? More specifically, how has car access in motorised households changed in the past two decades? Sociospatial profiles of motorised household members with restricted car access are presented for 1981 and 1996. The second purpose was to analyse restricted car access in motorised households by using a multivariate model of car access for motorised households in the Québec metropolitan area. To achieve these objectives, we developed a logical typology of forms of ‘restricted car access’ based on a combination of variables, or resources, qualifying the degree of car access enjoyed by individuals at any given moment during the day: availability of a car, possession of a driver's licence and a driver at the disposal of other household members. This typology was then applied to the 1981 and 1996 origin–destination survey data obtained from the Québec Census Metropolitan Area.  相似文献   

5.
Abstract. Development impact fees may create more housing opportunities for lower‐income households within suburban areas if there is a fiscal incentive behind the adoption of exclusionary land‐use regulations. Using panel data estimation techniques that allow us to control for unobservable heterogeneity and potential endogeneities, we estimate the effects of different types of impact fees on multifamily housing construction using data from Florida counties. Impact fees earmarked for public services other than for offsite water and sewer system improvements are found to expand the stock of multifamily housing construction within inner suburban areas. Water/sewer impact fees, on the other hand, are found to reduce construction throughout the entire metropolitan area.  相似文献   

6.
This article provides a comprehensive assessment of the effects of social protection interventions on material and subjective elements of well‐being. Drawing on a longitudinal survey located in two relatively deprived parts of Brazil, it assesses the effects of pensions and other cash transfers on the well‐being of older people and their households. This analysis is located within a dynamic economic and public policy context. The article finds that pension benefits significantly increase per capita income and that this is strongly associated with overall levels of satisfaction with household well‐being. Levels of reported subjective well‐being do not fall as respondents age, and the survey finds high levels of optimism about future well‐being. The positive effects of pension benefits were supported by upgraded health services and by more specific policies such as access to credit on favourable terms. Overall, the authors conclude that a combination of economic growth and effective public policies significantly boosted the well‐being of most households in their survey, and that Brazil can be taken as a model of good practice for other middle‐income countries.  相似文献   

7.
This paper provides a comparative assessment of income segregation in cities of 12 countries. We use spatial entropy indexes based on small‐scale gridded income data and consistent definition of city boundaries to ensure international comparability of our segregation measures. Results show considerable variation in the levels of income segregation across cities, even within countries, reflecting the diversity within urban systems. Larger, more affluent, productive, and more unequal cities tend to be more segregated. Urban form, demographic, and economic factors explain additional variation in segregation levels through the influence of high‐income households, who tend to be the most segregated. The positive association between productivity and segregation is mitigated in polycentric cities.  相似文献   

8.
Spatial inequality refers to unequal access to local public services between high‐ and low‐income households in relation to their residential locations. We examine two hypotheses regarding the role of income sorting and land‐use conditions in shaping spatial inequality in Chinese cities, where residents have little direct influence on local public service provision. First, in the presence of resource indivisibility, travel cost, and location‐based rationing, scarcity of public‐service resources in a city makes access to public services more uneven across neighborhoods, thus exacerbating income sorting and spatial inequality in the city. Second, the exacerbating effect of resource scarcity is mitigated by land‐use conditions that limit income sorting. Estimates of willingness to pay by households of different income levels for public‐service resources across cities corroborate both the exacerbating effect of resource scarcity and the mitigating effect of inclusive land‐use conditions.  相似文献   

9.
聚集经济与最优城市规模探讨   总被引:1,自引:0,他引:1  
蒋涛  沈正平 《人文地理》2007,22(6):68-72
经济活动的空间集中是一个引人注目的现象,聚集经济是空间集中的重要原因之一。虽然外部性对经济活动的集中有重要影响,但要解释聚集经济的来源还必须寻求更微观、更基本的经济主体行为上的原因。每个城市都存在着一个最优的规模,这个最有效率的规模是由经济活动空间集中所带来的利益与所引起的成本之间的一个均衡所决定的。因此,在城市化过程中,必须注重城市功能与效率的充分发挥。本文结合规模收益递增和单中心圆形城市模型,分析了通勤成本、城市规模收益递增程度对最优城市规模的影响,讨讨了城市人均收入与城市规模之间的关系,推导了两种对立的力量所决定的最优城市规模。文中指出:在一定条件下,城市人均收入与城市规模之间存在倒U形关系;否则,在城市总生产函数中规模收益递增程度足够强的情况下,最优城市规模取决于通勤成本。  相似文献   

10.
Provision of public services by state governments rather than municipalities is considered an important urban governance factor preventing deeper levels of socio‐spatial inequality in Australian cities. The paper examines the spatial patterns of investment by the New South Wales state government in a wide range of services and infrastructure in metropolitan Sydney over 28 budget years from 1988/89 to 2015/16. We examined the relationship between volume and type of investment in infrastructure and services, and considered a local area's socioeconomic characteristics, distance from the central business district, and designation as a strategic site in metropolitan plans. Despite an overall redistributive approach favouring relatively disadvantaged areas, the most disadvantaged suburbs in metropolitan Sydney had significantly lower levels of investment. When funding was directed to the most disadvantaged suburbs, it was often in the form of new social housing development, reinforcing both the concentration of poverty and disadvantage in resource access. The findings suggest that this is a case of under‐investment by the state government in areas already populated by disadvantaged communities rather than a market‐driven process whereby disadvantaged households move into poorly resourced neighbourhoods.  相似文献   

11.
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.  相似文献   

12.
This contribution attempts to reveal the relations between new suburban areas and other parts of the Prague metropolitan area by investigating the time‐space activity and mobility patterns of the inhabitants of newly built suburban districts. The focus on some aspects of the everyday life of people in new suburbs helps us to identify the impact of suburbanization on the changing geography of the metropolitan region and to better understand how the spatial organization of the Prague metropolitan area is produced, reproduced and transformed. We use several interrelated concepts, which serve the theoretical foundation of our work, namely time geography, structuration theory and the post‐communist city. The empirical data utilized are primarily based on 262 diaries completed by eighty‐eight individuals from thirty‐eight households, accompanied by household questionnaires and interviews with the heads of households. The research confirmed the implicit, generally unspoken view that new suburbs in the Prague metropolitan region are heavily dependent on the core of the metropolitan area for the provision of jobs and services. However, newly built suburban shopping facilities to some extent disrupt this pattern, keeping some daily activities of inhabitants within the suburban zone. In addition to empirical observations, the key purpose of this contribution has been to discuss and apply time geography concepts and methods to the research of urban restructuring, and to understand the structuration of metropolitan spatial organization.  相似文献   

13.
Jeroen Klink 《对极》2014,46(3):629-649
Despite regulatory and financial rollout of the state at a number of scales, and a strengthening of the institutional framework that guides territorial planning and management, Brazilian metropolitan governance continues to be characterized by fragmented and relatively competitive organizational structures. Likewise, the Brazilian metropolis is marked by economic dynamism and intense socio‐spatial and environmental contradictions. Much of the mainstream literature on metropolitan governance has emphasized a natural “optimum” scale for planning and management in city‐regions, articulated by public and private stakeholders aimed at the coordinated delivery of economic, social and environmental services. Combining the literature on new state spaces and critical Brazilian urban‐regional studies, this paper provides an alternative framework to understand the impasse of Brazilian metropolitan areas, which is grounded within a geo‐historic reading of the contradictory projects and strategies of the developmental state and the contested nature of metropolitan scale itself.  相似文献   

14.
This paper analyzes the relationship between spatial mobility and social mobility. It develops a two‐skill‐type spatial equilibrium model of two regions with location preferences where each region consists of an urban area that is home to workplaces and residences and an exclusively residential suburban area. The paper demonstrates that relative regional social mobility is negatively correlated with segregation and inequality. In the model, segregation, income inequality, and social mobility are driven by differences between urban and residential areas in commuting cost differences between high‐skilled and low‐skilled workers, and also by the magnitude of taste heterogeneity.  相似文献   

15.
This paper examines the trends in residential segregation by income (post-transfer, pretax income) in the thirty-nine largest Canadian urban areas between 1991 and 1996. The study is motivated by the relative lack of attention paid to residential segregation by income in the Canadian context and by conceptual arguments linking compromised life chances and increased social tensions for the populations of highly segregated cities. We investigated several dimensions of segregation using five different measures (we focus on three of these here given the correlation structure of the measures) to examine changes in segregation between 1991 and 1996, a period characterised by economic recession, cutbacks in social programs and a widening of inequality in market incomes at the national scale. Overall, income segregation increased in most urban areas across all dimensions of segregation during the time period, with particularly high degrees of segregation observed in prairie cities (Winnipeg, Saskatoon and Regina). Of the three largest metropolitan areas (Vancouver, Toronto and Montréal), Montréal was the most consistently segregated. We also find that increases in spatial separation and spatial concentration by income occurred despite the fact that at the national scale, the tax and transfer system appeared to be adequately redressing a rise in inequality in labour and market incomes (as demonstrated by the lack of change in post-transfer national income inequality measures during a period when inequality in market and labour incomes rose sharply). This implies that the lived experience of changes in income distribution are unlikely fully captured by aspatial, national-scale measures and that intra-urban measures with a spatial dimension are an important indicators of inequality in Canadian society.  相似文献   

16.
Recent studies on urban poverty in Canadian cities suggest a growing spatial concentration of poor populations within metropolitan regions. This article assesses trends in the intra‐urban distribution of the poor population from 1986 to 2006 in eight of Canada's largest cities. We consider five well‐known dimensions of segregation, as identified by Massey and Denton (1988) , in order to examine changes in the spatial distribution of poor populations within metropolitan areas: evenness, exposure, concentration, clustering, and centralization. These indices were calculated for low‐income populations at the census tract level using data from five Canadian censuses. Although each metropolitan area has distinctive characteristics, we were able to identify some general trends. The results suggest that, in 2006 compared to 1986, low‐income populations lived in more spatially concentrated areas, which were, at the same time, socioeconomically more homogeneous and more dispersed throughout the metropolitan area. In addition, we observed that over the last twenty years areas of poverty have been located, for the most part, in neighbourhoods adjacent to downtown cores. Nevertheless, we found that poverty has mostly increased in suburban areas located outside inner‐city neighbourhoods. Growing socioeconomic homogeneity and dispersion of low income areas in metropolitan areas reveal new spatial patterns of urban poverty distribution. These findings should be cause for concern as social isolation in the most disadvantaged neighbourhoods could affect the life chances and opportunities for the residents of those areas.  相似文献   

17.
Following the rapid demise of local coalmining in the 1950s and early 1960s, the former coal towns of the Cessnock area have survived in their newfound dormitory role, with cheap serviced housing acting as a major constraint on out–migration and an incentive for in–migration for low–income householders, mainly engaged in external commuting or outside the workforce. Behavioural responses to widening local job deficits in the early 1960s were reported in this journal (Holmes, 1965). From household surveys and other sources, Holmes examined the interplay between individual, household and locality variables and presented a spectrum of projected future outcomes for localities, according to accessibility, size and service provision, either attached to the Newcastle–Maitland labour market as low–income outer suburbs or experiencing varying rates of decline while providing low–cost welfare housing. While these broad trends have continued over the last 35 years, significant variants, not predictable in 1965 have emerged, notably: the increased residential attractiveness of some small localities; the strengthening of welfare migration, notably from Sydney; the increase in non–workforce households; and, some evidence of emerging socio–economic polarisation in larger towns. In these respects, Cessnock localities can be viewed as a microcosm of wider trends in Australian society, trends which are most fully revealed in disadvantaged metropolitan peripheral localities.  相似文献   

18.
In rural Cambodia, illness has caused more serious economic damage to rural households than crop failure. This article explores the reasons for this using data on the strategies adopted by households in two Cambodian villages to cope with these different types of shock. The data show that Cambodian households can cope with crop failure by earning additional income. However, to cope with illness, which entails lump‐sum treatment costs, they have to borrow money or sell their assets, because households cannot acquire the necessary funds in a short period just by earning additional income. Combined with the harsh conditions of credit markets (high interest rates, strict debt collection and credit rationing), and weak risk‐sharing among households, this results in illness causing a large number of land sales in the surveyed villages.  相似文献   

19.
Resource towns often exist on a knife‐edge, largely depending upon global demand for their resource/s and, at the same time, playing a critical role in the development of a nation. The transition from single resource towns to diversified economies has been modelled on several occasions, but their application to other resource locales is difficult given the unique interplay of geographic, political, social, and economic factors. Nonetheless, Innis' Canadian staples theory may explain the political motivations of resource extraction and exportation, not least in relation to the Western Australia Goldfields. This paper seeks to explore the theory's potential in this context by examining the implications of high labour mobility. It employs a two‐step process using, first, a social network analysis to map the entire Australian labour commuting network and, second, a regression analysis of commuting, regional wealth, and population size against population change. While the Goldfields historically grew in line with processes described by Innis' theory, contemporary high labour mobility has created a variegated landscape of different development dynamics and trajectories. This finding carries implications for network patterns of residence and work. Labour acts to extend the distribution of wealth by sending incomes to the metropolitan core and to amenity‐rich regional towns across the State and nation. In such light, regional development scholars must view the resource town in its broader urban system of distinct but interlocked, and sometimes overlapping, activity nodes.  相似文献   

20.
ABSTRACT In research conducted some 20 years ago, we elucidated the starkly lower suburbanization propensities of black households in the Washington, D.C. metropolitan area. The paper showed that simulated closure of large socio‐economic gaps between blacks and whites did little to diminish prevailing high levels of residential segregation or otherwise enhance moves by black households to areas of educational, employment, and housing opportunity. Some two decades later and in the wake of significant urban evolution, this paper assesses anew racial variations in residential location choice. Results of the multinomial logit (MNL) analysis indicate large, persistent racial differentials in intrametropolitan residential location choice. While black location choice in 2000 was relatively more dispersed than in 1980, it remained remarkably concentrated in D.C. and Prince George's County. As in our prior analysis, results showed that large simulated gains in black economic and educational status had little effect on prevailing racial segregation. These findings underscore the ongoing, limited access of black households to schooling, employment, and homeownership opportunities available outside traditional areas of settlement. In marked contrast, the locational choices of Latino and immigrant households bore greater similarity to those of whites and were more sensitive to improvements in socio‐economic status.  相似文献   

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