A Spatial Economic Analysis of Urban Land Use and Obesity*

Abstract. We analyze an urban spatial model to examine the possible link between urban land use and obesity. Households maximize utility defined over housing, weight, and food subject to a fixed time budget allocated to commuting, calorie expenditure, and work. Our model explains the observed correspondence between high obesity rates and low development densities, but implies that these are determined endogenously in a spatial market equilibrium. We study the sorting of residents by attributes such as income, initial weight, and weight preferences, and examine the impacts on weight and density of urban design modifications that lower the costs of calorie expenditure.     

转型期不同住房性质居民的职住关系演变——以上海郊区为例

提 要:从微观尺度检验不同住房性质居民职住关系的时空演变,有助于理解中国城市社会空间重构的深层机制.利用问卷调查开展2000年以来上海郊区不同住房性质居民职住地变迁的时间地理学分析.研究发现:不同住房性质居民的职住关系变化呈现显著差异."市场购房"居民多由中心城区向外迁移和郊区侧向迁移,职住距离上升,职住关系更加固定;...     

Identifying metro station types based on transfer purposes: An application of bike-sharing data in Xiamen,China

With the networking of urban rail transit and the large-scale development of bike-sharing, metro and bike-sharing connection has become the preferred way of daily travel for residents of Xiamen. Current studies mainly identify metro station types based on node and place orientation, lacking behaviour-based investigation. To fill this gap, this study aims to explore the classification of metro stations based on transfer purposes by combining bike-sharing and point of interest data in Xiamen, using buffer analysis, kernel density estimation, and DBSCAN clustering algorithm comprehensively. The results indicate the following. (1) Distinct transfer purposes have significant agglomeration characteristics and present poly-centric spatial pattern, an authentic portrayal of Xiamen's land use function. (2) The heterogeneity of connection flow between different transfer purposes and metro stations is apparent. The distribution of flow and flow direction within the same transfer purpose is also in non-equilibrium. (3) Based on traffic connection analysis, metro stations are divided into seven types: transportation hub, employment-oriented, residence-oriented, job-housing balance, school-oriented, traffic-tourism integration, and business connection types. The obtained results assist in improving the transportation connection environment, perfecting urban land use planning, and enhancing low-carbon and green travel.     

Faith no more? The divergence of political trust between urban and rural Europe

Events such as Brexit and the Gilet Jaunes protests have highlighted the spatial nature of populism. In particular, there has been increasing political divergence between urban and rural areas, with rural areas apparently having lost faith in national governments. We investigate this divergence using data on over 125,000 EU citizens from the European Social Survey from 2008 to 2018. We show that people in rural areas have lower political trust than urban or peri-urban residents, with this difference clear for six different forms of political institutions, including politicians, political parties, and national parliaments. There has been divergence of political trust between urban and rural Europe since 2008, although this is primarily driven by Southern Europe. While these results can partly be explained by demographic differences between cities and the countryside, divergent economic experiences, differences in values, and perceptions that public services are less effective outside of urban areas, there is a residual ‘rural effect’ beyond this. We argue that the polarisation of urban-rural political trust has important implications for the functioning of European democracies.     

Geographic accessibility to primary care providers: Comparing rural and urban areas in Southwestern Ontario

This research examines geographical accessibility to primary care providers (PCPs) across urban and rural areas of Southwestern Ontario and examines variations in the distribution of PCPs in relation to the senior population (aged 65 years and older). Information about PCP practices was provided by the HealthForceOntario Marketing and Recruitment Agency. Population data were obtained from the 2016 Census of Canada. To calculate scores for accessibility to PCPs (i.e., PCPs/10,000 population), we applied the enhanced 2-step floating catchment area method with distance decay effect within a global service catchment of 30-minute drive time. A geospatial mapping approach revealed disparities in the distribution of PCPs with a pattern of higher spatial accessibility in or around major urban areas in Southwestern Ontario. Comparative analyses were performed in association with the seniors’ population to identify how accessibility scores were mismatched with the population needs. The outcome of this study will assist researchers and health service planners to better understand the distribution of existing PCPs to address inequalities, particularly in rural areas.     

HEALTH SELECTION EFFECTS IN CHINA'S INTERNAL MIGRATION

Drawing data from the 2008 survey of Internal Migration and Health in China, we compare various health indicators among current rural-to-urban migrants, rural residents who never migrated, return migrants, and urban citizens. Two health-selective mechanisms, the healthy migrant hypothesis and the salmon bias hypothesis, are empirically tested. Results provide empirical support to both these hypotheses. After controlling for individual's age, sex, socioeconomic status and major health-related behaviours, current rural-to-urban migrants are still better off than rural residents who never migrated regarding their self-rated general health, chronic diseases, self-perceived physical discomfort and lung capacity. Current rural-to-urban migrants are also less likely to have chronic diseases or to report physical discomfort than return migrants. Except for self-reported chronic diseases and abnormally high heart rate, there is no significant difference between rural-to-urban migrants and urban residents regarding the health measures used in this study.     

中国城乡居民收入差距的省区间比较分析

中国城乡居民收入差距问题早已存在,但目前对城乡居民收入差距的研究大都是从全国的角度出发,从省区的角度进行的定量对比研究很少。而现实中省区间的城乡居民收入差距却存在着明显的差别,这种差别对于我们进行具体的成因分析以及因地制宜地制定城乡居民收入政策具有重要的意义。为此,本文利用1978- 2000年各省区城乡居民收入统计资料,采用回归分析和相关性分析的方法,从空间分布和时间序列变化两个方面对省区间的城乡居民收入差距进行了初步研究,揭示了城乡居民收入差距由东向西逐渐扩大的空间布局以及时间序列变化上的不同步性,同时,还对形成这种空间不平衡和时间变化不同步的原因进行了初步探讨,为进一步的成因分析及城乡政策的制定奠定基础。     

北京城中村居民“数字鸿沟”测量及其影响因素研究

移动互联网的快速发展，特别是2020年的新冠疫情加速了远程医疗等数字经济业态的发展，促使学者们重新重视“数字鸿沟”现象，探讨“数字不平等”和“社会不平等”的相互影响。文章以北京5个典型城中村为调研地，发现：移动互联网发展，4G网络普及和国产智能手机崛起缩小了城中村居民在设备接入上的鸿沟，但其上网技能还受到个体社会经济属性影响。产生“数字鸿沟”的传统因素如年龄、受教育程度等仍然在起作用，一些新的因素如户籍、网龄、上网时长催化了其在网络内容利用上的差异，社会结构分层同样嵌入到其网络产品和内容选择中。研究加深了我们对“数字鸿沟”的理解，也帮助我们分析其他社会弱势群体遭遇“数字鸿沟”的可能性。     

外地游客与本地居民的城镇空间感知差异——以广东省佛山市南海区西部城镇为例

随着全球竞争的不断加剧,地方政府着力于塑造城市形象以吸引外部资源,这种效率导向的建设行为扩大了城市内部的空间差异,并使得外地游客与本地居民的空间感知产生差异。本文以语义差别法（SemanticDifferential）为分析工具,通过对广东省佛山市南海区西部城镇的实证调查,比较分析了外地游客相对于本地居民对城镇感知的评价特征。分析发现,研究对象的空间感知总体呈现平庸化的格局,但是外地游客对城镇生态环境品质、城乡空间差别方面的空间感知评价均优于本地居民,且这种评价与实地场景照片内容具有内在的一致性。研究最后提出,对旅游城镇而言,地方政府往往重点建设外地游客高频活动区域,易忽视对本地居民日常生活场所的建设投资,从而导致了两类社会群体对空间感知的语境差异。     

国内外城市居民职住空间关系研究进展和展望

城市居民职住空间关系是指城市居民居住地和工作地之间的社会空间关系,是城市空间结构的重要研究内容。体制转型时期中国城市居民职住空间关系正在经历着翻天覆地的变化。本文主要从职住空间关系研究学派、职住空间平衡和城市通勤、居住选择和居住空间分异等方面对国内外相关研究进行述评,认为国内相关研究应注重社会调查,加强个体层面的研究,从体制转型和个体社会经济特征等角度寻求城市居民职住空间关系及其演化的形成机制,并注重特殊群体,如外来人口、城市贫困人口和原单位制社区居民等社会群体的职住空间关系和社会空间后果研究。     

信息通讯技术(ICT)与城市地理研究综述

信息通讯技术（ICT）已成为现代城市发展的重要推动力,对城市居民空间行为产生了深刻影响。本文在对国内外相关文献梳理的基础上,从城镇化、城镇体系、城市活动空间、虚拟空间与实体空间、智慧城市等方面对ICT与城市地理领域的关联性研究进行了综述。研究发现,ICT通过促进产业结构高级化协同城镇化发展,通过改变流动性、邻近性改变城镇体系与城市空间结构。同时基于虚拟空间—实体空间,构建信息通讯技术背景下城市空间与居民空间行为作用机制。在新型城镇化背景下,基于微观尺度聚焦居民个人空间行为的研究亟待开展,空间正义、社会公平、区域发展均衡等议题亟待关注,融合信息通讯技术的城市空间理论亟待发展。     

信息通讯技术对城中村女性居民活动空间的影响研究

21世纪以来,信息通讯技术（ICT）的飞速发展对居民日常生活产生了深刻影响,导致居民日常活动时空特征的重构。本研究利用北京城中村居民问卷调查数据,探究ICT影响下的城中村女性居民的活动空间。首先,通过归纳城中村女性居民网络活动特征,发现具有年轻、未在婚姻关系内、受教育水平高、经济状况较好等人口学和社会经济特征的女性是进行上网活动的主体人群。其次,运用计量模型探究ICT影响下的城中村女性居民的活动空间,发现ICT不是居住空间选择的影响因素但能减小女性休闲娱乐活动空间的制约。此外,网络购物对实体购物的补充作用大于替代作用。随着ICT影响的日益扩大,本文的研究结论对于政府制定相关政策和城市规划管理具有较强的现实意义。     

快速工业化城市职住空间平衡与过剩通勤研究——以中山为例

过剩通勤是衡量城市居民职住空间组织和通勤效率的重要指标。本文以快速工业化城市中山市为例,采用2012年中山市交通调查数据,分析中山市职住空间平衡与过剩通勤状况。通过线性规划模型计算发现,中山市居民的通勤距离、过剩通勤率(E)、通勤容量(C_u)使用率均普遍小于国内大城市和西方城市。城市空间结构与土地利用、产业结构与就业结构对中山市的通勤特征的形成有重要的影响。过剩通勤各项指标与户籍、职业类型和家庭收入有显著的相关性。表现为家庭收入越高,过剩通勤率相对较高。机关事业单位和企业行政办公人员通勤效率较低,而产业工人通勤效率较高。非本市户籍人口通勤效率高于本市户籍人口。     

Household economic resilience to catastrophic rainstorms and flooding in a Chinese megacity

Megacities situated on flood plains face escalating risks of waterlogging and inundation. Tianjin is one of these megacities in China where residents are exposed to these risks and not well prepared for their consequences. Government policies should support the most vulnerable and less resilient groups. This study can inform policy‐making by identifying the socio‐economic characteristics of those who are financially better prepared for the consequences of catastrophic rainstorms and flooding. A structured questionnaire survey was administered to 332 Tianjin residents. Results confirm that financial conditions crucially determine household resilience to these natural hazards. Lower‐income and less educated urban residents have lower resilient capacity. Weak engagement in the community, including residential committees and other organisations, is related to lower capacity to cope with the economic consequences of extreme weather events. Less resilient groups are therefore those who are subject to urban poverty and have limited social capital. Tianjin and other cities in the developing world require resilience strategies that attend to this segment of urban population.     

深圳居民购物行为空间决策因素分析

本文以深圳居民消费行为问卷调查的第一手资料为基础,通过构建购物行为空间决策的分析指标,包括购物决策因子偏好指数、认知度指数、购物因子评价指数等,从不同类型商品和不同商业中心地的购物空间决策角度,分析了深圳居民购物行为空间决策的主要因素及决策过程的主要特点。     

Changes in unemployment differentials in Sydney, 1947–76

This paper describes the historical development of spatial patterns of male and female unemployment rates within Sydney at each census year from 1947 to 1976, with two objectives: firstly to review the predictions of traditional urban theory that unemployment will be high in inner city areas because of the workforce characteristics of the residents; secondly, to assess the impact of the decentralisation of firms.     

Long-term trends in health status and determinants of health among the off-reserve Indigenous population in Canada, 1991–2012

The Indigenous population in Canada totals approximately 1.6 million individuals, representing about 5% of the total population. The off-reserve Indigenous population represents the fastest growing segment of the Indigenous population, with over 50% living in urban settings. Despite the size of the off-reserve population, research on the health of Indigenous peoples tends to remain focused on reserve-based populations. The purpose of this paper is to contribute to a better understanding of health and social determinants of health among off-reserve Indigenous peoples in Canada. Using data from the 1991 and 2012 Aboriginal Peoples Surveys this paper examines changes in health status and the social determinants of health over a 20-year time span. Results show a decline in health care use and self-reported health status in the period between 1991 and 2012. The results may be related to urbanization, aging, and increased prevalence of some chronic conditions. The findings may also be tied to barriers to achieving adequate off-reserve health care—jurisdictional disputes, disjointed program coverage, systemic racism, and a lack of equity-oriented health services. There remains a pressing need for Indigenous and non-Indigenous governments, researchers, and policymakers to build new relationships that bridge these gaps in health and access to timely care.     

北京市居民通勤特征研究——基于千余份问卷调查的分析

在千余份问卷调查的基础上,对北京市4个不同居住-就业空间结构样本区进行了不同交通方式、不同样本区居民的通勤距离、时间、效率等特征比较。结果表明:公共交通是北京市居民通勤的主要方式;随着通勤距离的增加,居民最常选择的交通方式从非机动车向公交再向地铁转变;北京市居民通勤时间相比于其他国际大都市偏长;私家车通勤效率最高;换乘对交通效率有较大负影响,在大型居住-就业中心通勤流中这一问题尤为严重;职住平衡的区域较之于居住或就业中心有着相对短的通勤距离和时间,以及相对高的非机动车出行比例。     

北京市民郊区大型购物中心的利用特征——以北京金源时代购物中心为例

以北京市民消费行为问卷调查第一手资料为基础,以北京金源时代购物中心为案例,从来店顾客和社区居民的双重角度研究北京市民对郊区大型购物中心这一新型商业空间的利用特征,发现专业人员与公司白领、年轻女性和带小孩的中年夫妇是其主要消费人群,并且,私家车主导的购物出行方式,多样化、休闲化的购物目的,以及社会化的购物过程构成居民利用郊区购物中心的主要特征。郊区大型购物中心的出现显著改变了附近居民的消费空间选择,但对内城居民的影响十分微弱。     

公共服务视野下的城市空间正义问题——以山东省Q市为例

以山东省Q市为例，从公共服务满意度视角探讨城市空间正义问题及其作用路径。研究发现，近年来我国城市存在公共服务视野下明显的空间不正义问题，临近省市政府能享受更多、更好的公共服务，而区政府并不显著，且远离政府权力中心的边缘地带更加严重。不过，这种空间不正义问题更多源自省市政府权力的空间资源配置失衡，区政府没有足够话语权；主要在市辖区层面，街道尺度并不显著。受制于公共产品属性不同，不同公共服务的空间不正义问题有明显差异，弱排他性或弱竞争性的问题较小。另外，权力空间化通过公共产品配置数量和质量影响空间不正义问题，且质量层面远大于数量层面。新时代城市要从提高公共产品质量入手实现空间正义。