The validity of the monocentric city model in a polycentric age: US metropolitan areas in 1990, 2000 and 2010     

Daniel Arribas-Bel  Fernando Sanz-Gracia 《Urban geography》2013,34(7):980-997

In this article, we use local indicators of spatial association (LISA) and other spatial analysis techniques to analyze the distribution of centers with high employment density within metropolitan areas. We examine the 359 metropolitan areas across the United States at three points in time (1990, 2000, and 2010) to provide a spatio-temporal panoramic of urban spatial structure. Our analysis highlights three key findings. (1) The monocentric structure persists in a majority of metropolitan areas: 56.5% in 1990, 64.1% in 2000, and 57.7% in 2010. (2) The pattern of employment centers remains stable for most metropolitan areas: the number of centers remained the same for 74.9% of metropolitan areas between 1990 and 2000 and for 85.2% between 2000 and 2010. (3) Compared with monocentric metropolitan areas, polycentric metros are larger and more dense, with higher per-capita incomes and lower poverty rates.  相似文献   

Whither the Jobs: Identifying Concentrations of Employment in Metropolitan Areas     

Todd K. Gardner  Matthew Marlay 《Urban geography》2013,34(6):795-814

Large concentrations of employment have developed outside traditional central business districts. Our research focuses on analyzing the changing distribution of employment in metropolitan areas by using tract-to-tract commuting data from Census 2000 to identify high-employment nodes within large metropolitan areas. We propose a new way to delineate clusters of contiguous high-employment tracts based on the job density in these areas. We then compare outlying employment clusters with traditional central business districts and contrast employment clusters of varying job densities. Our method has several advantages over existing methods of identifying employment clusters: it is conceptually simple, can use publicly available data, relies on a standardized geographic unit applicable across the entire United States, and offers the ability to examine data from multiple census years.  相似文献   

BEYOND POSTMODERNISM     

《Urban geography》2013,34(7):589-590

By simultaneously controlling for the spatial and social characteristics of neighborhoods, this study sheds new empirical light on the relationship between ethnic-enclave residence and ethnic-niche employment. Considering women's commuting constraints and their theoretically more local social networks, this study explores whether residential segregation may be a more important determinant of labor-market segregation for immigrant women than for men. The study finds that residential segregation plays an important role in sustaining labor-market segregation among immigrants, and that gender emerges as a salient mediating factor. While living in an ethnic enclave tends to be associated with ethnic-niche employment for both men and women, women who live in enclave neighborhoods have a higher rate of ethnic-niche employment than men. However, greater geographic accessibility to niche jobs is associated with niche employment for both immigrant men and women in general, and place-based context seems as important to men as women.  相似文献   

Urban Employment Subcenters and Sectoral Clustering in Montreal: Complementary Approaches to the Study of Urban Form   总被引：1，自引：0，他引：1  

《Urban geography》2013,34(2):103-105

Since the late 1980's there has been renewed interest in the study of employment polynucleation within metropolitan areas, fed in part by the move to suburban locations of high-order service functions. In parallel, a growing body of research has underlined the role which proximity plays in information exchange, innovation and growth. So far there have been only limited attempts to merge these two approaches and investigate the degree to which local agglomeration economies and positive externalities may underpin the creation of suburban employment poles. In this paper a first step is taken in this direction by proposing an approach to systematically investigate the colocation of economic activities within a metropolitan context. It is found that the groups of economic activities which systematically tend to colocate closely mirror those activities which would be grouped together along sectoral lines.  相似文献   

北京都市区城市功能格局及其变化——基于经济普查数据的分析   总被引：2，自引：1，他引：1  

卢明华  李国平  孙铁山 《地理研究》2011,30(11):1970-1982

利用北京市第一、第二次经济普查数据,以“乡镇＼街道”为基本空间单元,运用因子分析和聚类分析方法研究北京都市区城市功能格局的特征与模式。与2004年相比,2008年北京都市区城市功能格局发生了明显变化。北京都市区城市功能布局呈现郊区化态势：建筑运输与制造功能呈现最明显的郊区化特征,沿主要交通干线向远郊区快速拓展;生产服务...  相似文献   

黄土高原地区退耕还林工程的农户响应与影响因素——以甘肃定西大牛流域为例   总被引：13，自引：6，他引：7  

马岩  陈利顶  虎陈霞 《地理科学》2008,28(1):34-39

以甘肃省退耕还林(草)重点实施区为例,通过问卷调查和定量回归分析,研究农户对退耕还林(草)工程的认识和态度。总体上农民有较高的生态环境保护意识,对退耕还林(草)政策的认识基本持积极支持的态度;年龄、文化程度、家庭人口、劳动力数量、人均耕地数量、退耕还林(草)面积是影响农户环保意识和对退耕还林(草)态度的主要因素,农业和非农业农户之间存在一定差异。  相似文献   

民勤绿洲生态重建目标下土地利用和农业结构调整的政策选择   总被引：3，自引：1，他引：2  

石敏俊  陶卫春  赵学涛 《干旱区地理》2009,32(2)

水资源过度利用引起的土地退化日益威胁着绿洲地区的经济社会可持续发展.为恢复绿洲生态环境,压缩农业用水势在必行.然而压缩用水后如何保障农民收入成为实现可持续发展的关键问题之一.应用Bio-economic模型,定量模拟了压缩农业用水后农户对土地利用和农业结构调整、推广节水技术、增加非农就业机会等政策措施的行为响应.结果显示,压缩农业用水后农民收入将下降到压缩前的53%;调整农业结构、推广闸管灌等节水灌溉技术和增加非农就业机会,可以在不同程度上缓解压缩农业用水造成的农民收入损失.不同区域农户响应行为有所差异,应因地制宜地采取配套措施.劳动力相对紧张、人均收入较高的泉山区,可提供一次性补贴鼓励闸管灌的采用;人多地少、集约化程度较高的坝区,应在加强推广闸管灌技术的同时,增加非农就业机会;生态脆弱的湖区,政策重点应放在劳动力转移上.上述措施最终只能使农民收入恢复到压缩用水前的75%,因此应该考虑给农民提供生态补偿,并积极探索增加农民收入的新途径.  相似文献   

Globalization, grapes and gender: Women's work in traditional and agro-export production in northern Chile     

ANNA BEE 《The Geographical journal》2000,166(3):255-265

Recent changes in the global political economy have had dramatic effects on the lives of women as they are incorporated into globalization processes, such as the expansion of agribusiness, in often marginal and unstable ways. However, it is vital to consider how these globalization processes are mediated by women in ways that reflect local geo-historical contexts. This paper explores the expansion of the fruit export sector, land tenure, community organization and female employment in agriculture in northern Chile. Agro-export production has marginalized but not destroyed the small-scale farming sector and large-scale export farms co-exist with small-scale domestically-orientated farms. Female labour has been very important in the success of fresh fruit exports and many rural women negotiate both waged work in the fruit export economy and unwaged work on family farms. The paper explores the women's perceptions of agricultural work and how these relate to their identities as unpaid workers on the family farm and as waged workers in the agro-export sector. The paper thus attempts to explore the multiplicity of ways that women experience rapid changes in the agrarian sector and how these changes relate to the maintenance of more 'traditional'practices and identities.  相似文献   

海洋强国战略下涉海大学生海洋领域就业研究          下载免费PDF全文

车淼洁  王睿 《海洋开发与管理》2020,37(11):40-44

当代涉海专业大学生是建设海洋强国、实现国家发展战略的关键接班人和后备军。文章围绕某高校涉海大学生展开调查发现，海洋领域就业意向与专业满意度、家人的态度、实习经历等显著相关；影响择业的主要因素是收入和地域。文章提出，传播海洋强国战略、加强理想信念教育，弘扬海洋精神、培育敬业奉献素质，深化校企合作、拓宽海洋领域实习实践，细化职业规划、精准开展就业指导等途径，有助于培养和输送涉海大学生服务海洋战略、投身海洋重点领域就业。  相似文献   

BOOK REVIEWS     

《The Professional geographer》1988,40(3):347-378

Books reviewed in this article: The Mexican Colonial Copper Industry. Elinore M. Barrett . The Control Revolution: Technological and Economic Origins of the Information Society . James R. Beniger . Land Degradation and Society . Piers M. Blaikie And Harold C. Brookfield , Eds . La carte, mode d'emploi. Roger Brunet . France: les dynamiques du territoire . Roger Brunet AND Jacques Sallois , EDS. At the Crossroads—The Mineral Problems of the United States . Eugene N. Cameron . A Census of One Billion People , Papers for International Seminar on China's 1982 Population Census. Li Chengrui , ED. Les Milieux “Naturels” du Globe . Jean Demangeot . The Geophysiology of Amazonia: Vegetation and Climate Interactions : Robert E. Dickinson , ED. Tenn-Tom Country . James F. Doster And David C. Weaver . Family Farming in Europe and America . Boguslaw Galeski And Eugene Wilkening , EDS. The Geography of Urban Transportation . Susan Hanson , Ed. Combating Desertification in Developing Countries . J. K. Jain , ED. Cartography in France—1660–1848. Science, Engineering and Statecraft . Josef W. Konvitz . Distribution of Distances in Pregeographical Space . Hans Kuiper . Physical Geography Lab Manual: A New Experimental Approach . Neal G. Lineback And John M. Harlin . Physical Geography: A Landscape Appreciation , 2nd ed. Tom L. Mc Knight . The Desert Is No Lady: Southwestern Landscapes in Women's Writing and Art . Vera Norwood And Janice Monk , EDS. France: A Geographical, Social, and Economic Survey . Philippe Pinchemel , translated, by D. Elkins and T. H. Elkins. Gene Banks and the World's Food . Donald L. Plucknett , Nigel J. H. Smith , J. T. Williams , And N. Murthi Anishetty . Latin American Development: Geographical Perspectives . David Preston , Ed. Making Sense of Development: An Introduction to Classical and Contemporary Theories of Development and Their Application to Southeast Asia . P. W. Preston . The History of the Countryside. Oliver Rackham . The Third World in Perspective . H. A. Reitsma AND J. M. G. Kleinpenning . The Industrial Geography of Australia . David C. Rich . The Recruiting Game , 2nd Ed., revised. John F. Rooney , JR. A Cultural Geography of North American Indians . Thomas E. Ross AND Tyrel G. Moore , EDS. Eastern Europe . Dean S. Rugg . Human Territoriality: Its Theory and History . Cambridge Studies in Historical Geography: 7. Robert David Sack . Experimental Fluvial Geomorphology . Stanley A. Schumm , M. Paul Mosley , AND William E. Weaver . The New Urban Landscape . David Schuyler . Atlas of American Women . Barbara Gimla Shortridge . Impacts of Hazardous Technology: The Psycho-Social Effects of Restarting TMI-1 . John Sorensen , Jon Soderstrom , Emily Copenhaver , Sam Carnes AND Robert Bolin . Modern Physical Geography , 3rd Ed., (Third Edition). Arthur N. Strahler AND Alan H. Strahler . India: Economic Resource Base and Contemporary Political Patterns . B. L. Sukhwal .  相似文献