上海陆家嘴金融集聚动因的实证研究

本文利用陆家嘴金融创新问卷调查和面对面访谈等实地调研资料,对上海陆家嘴的金融集聚动因进行了较为深入的探讨。研究发现,邻近金融中心市场、共享知名品牌、金融友善型政府、良好的政策法规是促进其金融集聚的主要动因;而我国金融政策环境开放度不高、金融产业水平较低、市场规模不大、中介服务机构不足则正成为影响陆家嘴金融集聚的主要不利因素。     

城市群体结构及其演进

城市群形成和发展的本质过程和直观表现是城市群体结构或城市群形态结构产生、发展到成熟完善的过程。文章从城市群体结构的概念入手,研究了其基本型式和结构划分的思路,概括了四圈层空间结构模式,即核心首位城市带、城市组群发育带、城市个体分布带、城市群腹地带。分析了其结节性与均质性、网络性、功能性的特征,并对城市群体结构发展动力、阶段及特征加以理论概括。以城市群演化为基点,对城市群体形态结构、类型和演化规律予以阐述,归纳出城市群体结构和城市群形态类型演化的相关模式。     

新区域主义视角下长株潭城市群区域一体化过程与影响因素

在新区域主义理论视角下,借鉴城市引力模型、经济网络结构模型和比较集中系数的方法,对长株潭城市群区域一体化进行分析。结果表明：长株潭城市群区域一体化水平在不同的时代背景下存在显著差异,其变化过程呈现出“高-低-高”的“V”字型特征。可划分为三个阶段：第一个阶段是1980年到1990年区域一体化程度较高的阶段,后计划经济是其发展的时代背景;第二个阶段是1990年到2000年由计划经济向社会主义市场经济转轨,是区域一体化的低谷阶段;第三个阶段是在2000年之后,随着社会主义市场经济的确立,城市群进入区域一体化程度更高的阶段。长株潭城市群区域一体化影响因素逐步由政府力量为主转为市场力量为主,呈现出明显的新区域主义特征。     

Patent portfolio analysis of cities: statistics and maps of technological inventiveness

ABSTRACT

Cities can be considered as engines of the knowledge-based economy, because they are the primary sites of knowledge production activities that subsequently shape the rate and direction of technological change and economic growth. Patents provide rich information to analyse the knowledge specialization of specific places, such as technological details and information on inventors and entities involved. The technology codes attributed at the level of individual patent documents can be used to indicate the diversity and scope of the knowledge claims underlying a specific invention. In this study we introduce tools for portfolio analysis in terms of patents that provide insights into the technological specialization of cities. The mapping and analysis of patent portfolios of cities exploits data derived from the Unites States Patent and Trademark Office (USPTO) and dedicated tools (at https://leydesdorff.net/software/patents/). The results allow policy makers and other stakeholders to identify promising areas of further knowledge development, including smart specialization strategies.     

京津冀地区城市间行业工资差异及影响因素分析

基于2005-2012年京津冀各城市工资及其它社会经济数据,探讨了市场潜能、产业集聚、人力资本、制度改革等因素对城市间各行业工资差异的影响。结果表明：①市场潜能对各行业工资水平的增长均有一定的促进作用。②除消费性服务业外,各类产业集聚对地区平均工资水平的提高均有一定的促进作用,但制造业集聚带来的拥挤效应也已开始体现;生产性服务业集聚能够带动公共性服务业工资的提升,而公共性服务业缺乏对生产性服务业的反哺;产业集聚对消费性服务业工资缺乏带动作用。③在控制变量方面,交通基础设施对工资水平的带动作用逐渐弱化;科技投入、人力资本对服务业工资水平的带动作用较高,而对制造业影响较弱;市场经济体制改革对工资水平的带动作用仍未体现;政府市场干预能力的提高仅带动了公共性服务业工资的提升,而外向度的提升则仅对公共性服务业缺乏带动作用。     

长株潭城市群城镇化进程与水资源利用响应关系研究

采用层次分析法与熵权法相结合的方法,构建长株潭城市群城镇化综合发展水平和水资源开发利用综合潜力评价指标体系及响应关系模型,对2001-2015年间研究区域城镇化发展进程与水资源利用之间的动态过程进行定量研究,分析主要影响因素、变化特征以及两者响应特征。结果表明：长株潭城市群处于快速城镇化和规模扩张阶段,人口城镇化和空间城镇化水平高于经济城镇化和社会城镇化水平,城镇化发展质量有待提升;区域用水负荷逐年增加,虽然水资源利用效率和管理水平稳步提升,但水资源自然禀赋和开发利用程度受区域水文条件的影响显著。在2001、2005、2007、2009、2011年,长株潭区域城镇化的发展在一定程度上受到水资源系统的约束。协调好城镇化与水资源之间的关系,必须改变规模外延扩张模式,以控制水资源总量、有效提高水资源利用效率为目标,减弱水资源系统对城镇化发展的制约,提高水资源保障能力。     

长春-吉林经济带的形成与空间结构特点研究

文章通过对经济带概念的分析,构建经济带的形成和演进理论,认为经济带有等级、层次之分,其时空演进的理论为增长极理论——点一轴发展理论——梯度推移理论。在此基础上,论证长春—吉林经济带的存在性,分析其结构、功能及空间联系形式。作者认为,长春—吉林经济带目前是一个弱经济带,其扩散效应较弱,随着其扩散效应的增强,长春—吉林经济带将能够从整体上带动和促进吉林省的经济发展。     

聚集经济与最优城市规模探讨

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。     

Complexities in the spatial scope of agglomeration economies

This paper argues that the spatial scope of agglomeration economies is more complex than is often assumed in the literature. We provide insight into this issue by showing that agglomeration on short distances (<5 km) does not significantly affect wages, whereas it has a significant and positive effect on medium distances (5–10 km). This effect attenuates rapidly across geographic space, becoming insignificant after 40–80 km. We offer several explanations for this observed distance decay pattern. The results do not imply, however, that nearby agglomeration is irrelevant to the wage formation: only highly urbanized areas benefit from agglomeration on longer distances. Furthermore, this article finds no evidence that foreign economic mass affects wages in the Netherlands, which suggests that national borders are still a substantial barrier for economic interaction.     

What drives the spatial wage premium in formal and informal labor markets? The case of Ecuador

This article investigates the incidence of agglomeration externalities in Ecuador, a small-sized, middle-income developing country. In particular, we analyze the role of the informal sector within these relations, since informal employment accounts for a significant part of total employment in the developing countries. Using individual level data and instrumental variable techniques, we investigate the impact of spatial externalities, in terms of population density, local specialization and urban size, on the wages of workers in Ecuadorian cities. The results show that spatial externalities matter also for a small developing country. Moreover, analysis of the interaction between spatial externalities and informality shows that, on average, workers employed in the informal sector do not enjoy significant benefits from agglomeration externalities. Finally, by investigating the possible channels behind spatial agglomeration gains we show that the advantages from agglomeration for formal sector workers may well be accounted for by better job-quality matches and, to a lesser extent, by learning externalities. For informal sector workers, our findings also suggest possible gains from job changes, which offset a penalty for remaining employed in the same occupation.