鞍山市西郊区水位预测   总被引：2，自引：0，他引：2  

焦玉玲  杨天行  王孝军 《世界地质》2003,22(1):73-76

根据鞍山市西郊区水文地质条件，建立了双层渗流二维平面系统的数学模型：应用Galerkin有限元法求解模型，从模型的计算结果可见该区观测点水位绝对误差较小，达到了规范要求的计算精度，同时，在此区内有一个大漏斗，在东南的铁西一带也有一个小漏斗。由于铁西一带是主要开采水源区，开采水量较大，所以漏斗逐渐向外扩大且水位有明显下降的趋势。这一变化规律与实际水位一致，说明计算水位基本上反映了实际水位空间变化的规律。因此根据模拟参数利用此模型对该地区进行了水位预测，共预测了四年的水位状况，并依据水位的预测结果对该区的水资源开发利用提出了合理建议。  相似文献   

Vibrant Centers as Locations for High-Growth Firms: An Analysis of Thirty U.S. Metropolitan Areas     

Emil Malizia  Yasuyuki Motoyama 《The Professional geographer》2019,71(1):15-28

What kinds of places have high entrepreneurial activities? There has been an emerging body of studies about so-called entrepreneurship ecosystems, but virtually all of the past studies have examined this question from a perspective of which metropolitan areas have higher entrepreneurial activities. In this article, we examine the intrametropolitan scale at the Census tract level. By analyzing thirty metropolitan areas to extend external validity, we demonstrate the concentration of high-growth firms in specific employment nodes in both urban and suburban parts of each metropolitan area. Significant correlations exist between place-based vibrancy indicators and high-growth firm concentrations.  相似文献   

北京城郊近地层湍流实验观测   总被引：13，自引：2，他引：13  

苏红兵  洪钟祥 《大气科学》1994,18(6):739-750

本文利用两台FA-11超声风速温度仪于1992年3月到４月间在北京325 m气象观测塔47 m和120 m两个高度观测到的风速三个正交分量以及声虚温的湍流脉动资料，计算和分析了北京城郊粗糙下垫面近地层湍流特征量及其日变化，无量纲垂直速度和声虚温的方差随稳定度的变化，风速分量和温度的归一化湍流能谱以及动量和热通量的互谱及其随稳定度的变化。并且与平坦均一下垫面近地层湍流观测的结果进行了对比。  相似文献   

Editorial Notes and News     

《The Journal of geography》2012,111(5):221-224

Abstract

Thubten Jigme Norbu. Tibet Is My Country. As told to Heinrich Harrer; translated from the German by Edward Fitzgerald. E. P. Dutton &; Co., 300 Park Avenue South, New York 10, N.Y., 1961. 264 pages with color illustrations. $5.00.

Miriam Schlein. The Sun, The Wind, The Sea and The Rain. Abelard-Schuman Limited, 6 West 57 Street, New York 19, N.Y., 1960. 38 pages with illustrations by Joe Lasker. $2.75.

Robert L. Pendleton with the assistance of Robert C. Kingsbury and others. Thailand: Aspects of Landscape and Life. An American Geographical Society Handbook. Duell, Sloan and Pearce, 60 East 42nd Street, New York 17, N.Y., 1962. xv and 321 pages with table of contents, photographs, maps, charts and index. $10.00.

Stuart R. Tomkins. Life in America: Alaska. Revised edition. The Fideler Company, Grand Rapids 2, Michigan, 1961. 128 pages with table of contents, photographs, glossary and index. $2.48.

Harry C. Rubicam, Jr. Men at Work in the Great Plains States. G. P. Putnam's Sons, 200 Madison Avenue, New York 16, N.Y., 1961. 123 pages with table of contents, photographs, notes and index. $3.00.

Winifred Hammond. Rice: Food for a Hungry World. Coward-McCann, Inc., 210 Madison Ave., New York 16, N.Y., 1961. 160 pages with table of contents, references, maps, photographic illustrations and index. $3.50.

John C. and Elsie F. Caldwell. Our Neighbors in the Philippines. The John Day Company, Inc., 200 Madison Avenue, New York 16, N.Y., 1961. 45 pages with table of contents, photographs and illustrations by Heidi Ogawa. 12.00.

Sidney H. Gould, editor. Sciences in Communist China. (Pub. No. 68) American Association for the Advancement of Science, Washington, D.C., 1961. 872 pages with table of contents, tables and author, geographical and subject indexes. $14.00.

Gilbert F. White, editor. Papers on Flood Problems. Research Paper No. 70. Department of Geography, Rosenwald Hall, University of Chicago, Chicago 37, Illinois, 1961. 228 pages with illustrations. $4.00.

D. D. Harris and D. A. M. Lea. A Regional Geography of South Australia. Whitcombe and Tombs Pty., Ltd., 20 Bond Street, Melbourne, C. 1, Australia, 1961. 168 pages with table of contents, maps, diagrams and index. About $2.75.

Richard M. Highsmith, Jr., editor, and Jon M. Leverenz, cartographer. Altas of the Pacific Northwest: Resources and Development, 3rd edition. Oregon State University Press, Corvallis, Oregon, 1962. 168 pages with table of contents, photographs, tables, plates and index. $5.00.

Wiliam Lytle Schurz. Brazil, The Infinite Country. E. P. Dutton &; Co., 300 Park Avenue South, New York 10, N.Y., 1961. 316 pages with table of contents, maps, supplementary reading list and index. $6.00.

Umberto Nobile. My Polar Flights. G. P. Putnam's Sons, 200 Madison Avenue, New York 16, N.Y., 1961. 288 pages with table of contents, illustrations, appendix and index. $4.50.

Robert Engler. The Politics of Oil: A Study of Private Power and Democratic Directions. The Macmillan Company, 60 Fifth Avenue, New York 11, N.Y., 1961. viii and 565 pages with table of contents, notes and index. $7.50.

Edwin Thompson Denig. Five Indian Tribes of the Upper Missouri: Sioux, Arickaras, Assiniboines, Crees, Crows. (Edited and with introduction by John C. Ewers.) University of Oklahoma Press, Norman, Oklahoma, 1961. 217 pages with 12 illustrations, 1 map, editor's bibliography and index. $4.00.

J. P. Cole and F. C. German. A Geography of the USSR: The Background to a Planned Economy. Butterworth Inc., 7235 Wisconsin Avenue, Washington 14, D.C., 1961. x and 290 pages with table of contents, appendixes, notes, glossary, bibliography and index. $8.50.

Jane and Paul Annixter. Horns of Plenty. Holiday House, 8 West 13th St., New York 11, N.Y., 1960. 203 pages. $2.95.

Richard J. Ward and Lawrence A. Hoffman, editors. Readings in Economic Geography from Fortune. Henry Holt and Company, 383 Madison Avenue, New York 17, N.Y., 1960. 130 pages with table of contents, maps and graphs. $1.50

Helen Wolff Vogel and Mary Leonard Caruso. Ocean Harvest: The Future of Oceanography. Alfred A. Knopf, 501 Madison Avenue, New York 22, N.Y., 1961. 14 pages with illustrations by John Kaufman. $3.00.

The New Rand McNally Pocket World Atlas. Cardinal Edition. Pocket Books, Inc., 630 Fifth Avenue, New York 20, N.Y., 1961. 295 pages with table of contents, maps covering 169 pages and index. 75 cents.

Lowdon Wingo, Jr., Transportation and Urban Land. Resources for the Future, Inc., 1775 Massachusetts Avenue, N.W., Washington 6, D.C., 1961. 132 pages with table of contents, figures and appendices. $2.00.

Paul Fenimore Cooper. Island of the Lost. G. P. Putnam's Sons, 200 Madison Avenue, New York 16, N.Y., 1961. 256 pages with table of contents, map of King William Island and selected bibliography. $4.00.

Rhoads Murphey. An Introduction to Geography. Rand McNally and Company, P.O. Box 7600, Chicago 80, Illinois, 1961. 699 pages with table of contents, illustrations, chapter-end bibliographies, questions for further study, statistical appendix and index. $7.75.

Jordan A. Hodgkins. Soviet Power: Energy Resources, Production and Potentials. Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 1961. 190 pages with table of contents, maps, tables and 34 pages of appendix tables. $5.25.

Andrew A. Freeman. The Case for Doctor Cook. Coward-McCann, Inc., 210 Madison Avenue, New York, N.Y., 1961. 315 pages with table of contents, sources, notes and acknowledgments and index. $5.75.

Frances H. Kohan and Truda T. Weil. Juan's Adventures in Mexico. Noble and Noble, Publishers, Inc., 67 Irving Place, New York 3, N.Y., 1961. 183 pages with table of contents, chapter study helps, illustrations and suggested reading list. $3.00.  相似文献   

快速城镇化背景下居住空间分异与失地农民社会融合的作用机制研究——以长三角地区为例     

张海娜  朱贻文  邓晓翔 《地理科学进展》2021,40(1):135-146

伴随着快速城镇化进程,中国城镇化已从速度型向质量型转变,这一转变的核心是实现人的城镇化,即农业转移人口的市民化。失地农民的居住形态由原来的宅基地建房为主转变成征地补偿房、租房和自购商品房等多种形式并存,即出现了居住空间分异现象。居住空间分异对失地农民的社会融合会产生重要影响,但其作用机制的有关研究尚少。论文基于长三角地区的调研数据,以“社会—空间”为主要视角,从住房类型(含区位)和住房人均面积2个维度衡量居住空间,通过建立回归模型,分析居住空间对城郊失地农民社会融合的影响。研究发现,其作用机制为：一是不同居住空间的城郊失地农民的社会融合程度有显著差别;二是住房类型对城郊失地农民的社会融合影响最大,住房面积则影响不大;三是性别、年龄、职业、收入、获得非农户口的时间等因素也与住房类型共同产生作用。为推动失地农民的社会融合、提升新型城镇化的质量,可采取的措施有推行混合居住模式、增强就业能力以及政府增加投入提升城郊失地农民社会保障水平等。  相似文献   

Debordering and rebordering in the residential borderlands of suburban Guangzhou     

Kaihuai Liao  Rainer Wehrhahn 《Urban geography》2018,39(7):1092-1112

Gated communities and enclave urbanism in China have recently drawn considerable attention of researchers and policy makers. The integration of urban space is now even on the agenda of the Chinese Central Government. This article therefore sets out to advance our understanding of how exactly urban borders function and how they change over time. This is done by applying concepts of border theory to what may be called residential borderlands. The empirical study is conducted in two such borderlands between gated communities and suburban villages in southern Guangzhou. It is based on over 70 qualitative interviews and the observation of spatial behaviour at the respective borders. Both debordering and rebordering processes are found to occur with regards to three dimensions: cross-border mobility, cross-border social connectivity and symbolic border functions. The identified dynamic processes at the neighbourhood borders are embedded in the overall urban spatial reconfiguration of Guangzhou.  相似文献   

Financing loss and damage: reviewing options under the Warsaw International Mechanism     

Jonathan Gewirtzman  Sujay Natson  Julie-Anne Richards  Victoria Hoffmeister  Alexis Durand  Romain Weikmans 《Climate Policy》2018,18(8):1076-1086

After decades of pressure from vulnerable developing countries, the Warsaw International Mechanism on Loss and Damage (the WIM) was established at the nineteenth Conference of the Parties (COP 19) in 2013 to address costly damages from climate change. However, little progress has been made towards establishing a mechanism to fund loss and damage. The WIM's Executive Committee issued its first two-year workplan the following year at COP 20 which offered, among other things, a range of approaches to financing loss and damage programmes, which we review here. We provide brief overviews of each mechanism proposed by the WIM ExCom, describe their current applications, their statuses under the United Nations Framework Convention on Climate Change (UNFCCC), some of their advantages and disadvantages, and their current or potential application to loss and damage. We find that several of these mechanisms may be useful in supporting loss and damage programmes, but identify some key gaps. First, most of the mechanisms identified by the WIM ExCom are insurance schemes subsidized with voluntary contributions, which may not be adequate or reliable over time. Second, none were devised to apply to slow-onset events, or to non-economic losses and damages. That is, if harms are inflicted on parts of a society or its ecosystems that have no price, or if they occur gradually, they would probably not be covered by these mechanisms. Finally, the lack of a dedicated and adequate flow of finance to address the real loss and damage being experienced by vulnerable nations will require the use of innovative financial tools beyond those mentioned in the WIM ExCom workplan.

Key policy insights

• Despite a full article of the 2015 Paris Agreement devoted to loss and damage, there is little international agreement on the scope of loss and damage programmes, and especially how they would be funded and by whom.

• Most of the loss and damage funding mechanisms identified by the WIM ExCom are insurance schemes subsidized with voluntary contributions, which may burden the most vulnerable countries and may not be reliable over time.

• None of the mechanisms were devised to apply to slow-onset events, or to non-economic losses and damages.

  相似文献   

Connecting Local to Global: Geographic Information Systems and Ecological Footprints as Tools for Sustainability     

Sonja Klinsky  Renée Sieber  Thom Meredith 《The Professional geographer》2013,65(1):84-102

Tools that support public engagement with sustainability are essential for local sustainability planning. This research investigates the ability of two geographic information system (GIS)-based tools to promote discussion of sustainability in a suburban context. A local ecological footprint tool and a community environmental atlas (an environmentally themed online mapping system) were created for seven suburban boroughs of Montreal. Variations of both tools have been used to support sustainability efforts, but their use has not been widely evaluated. Working from a public participation GIS (PPGIS) framework that recognizes the powerful influence of data representation, this research uses focus groups to evaluate how well these tools address three criteria that have emerged from the literature on public engagement in sustainability: interdependency across systems, reflexivity about personal and social decision making, and interactions across spatial scales. Whereas the atlas remains advantageous for discussing local spatial specifics, it was found that the ecological footprint helped people see the interconnections among systems, integrate local and global aspects of sustainability, and reflect on the values and assumptions underlying current social and economic structures.  相似文献   

The Fate of Inner Suburbs: Evidence From Metropolitan Baltimore   总被引：1，自引：1，他引：0  

《Urban geography》2013,34(3):249-275

This paper analyzes the transformation of Baltimore's inner suburbs from 1980 to 2000. After developing a geographic definition of inner suburbs, we then spatially analyze them using census place-level data. The analysis shows evidence of socioeconomic decline in Baltimore's inner suburbs, but the extent of this decline varies among these suburbs. Since 1980, many declining inner suburbs had difficulty attracting new residents, White flight was the prevailing trend, and the housing stock was outdated relative to the outer suburbs. The analysis suggests three major influences on decline among the inner suburbs of Baltimore: labor market restructuring, the nature of the local housing market, and income and racial segregation. This paper concludes with a classification of Baltimore's inner suburbs based on our understanding of the processes of suburban decline in the region.  相似文献   

北京城郊山地森林游憩机会谱构建   总被引：6，自引：0，他引：6  

肖随丽  贾黎明  汪平  李江婧 《地理科学进展》2011,30(6):746-752

20世纪中叶,到森林中休闲游憩的人数剧增,为了保护生态环境,同时为游客提供高质量的游憩体验,美国林务局的管理者和专家发展了游憩机会谱(ROS)理念和管理框架,其主要以游憩需求为导向,依据"自然环境"、"社会环境"和"管理环境"指标对游憩区进行分类分级,编制游憩机会清单,对资源进行清查、规划和管理。本文在介绍ROS理论的基础上,结合北京市民森林游憩的需求特征和森林游憩区当前的管理体制和开发利用现状,筛选出"自然程度"、"偏远程度"、"游客密度"和"管理强度"4个评价指标,分析提出了北京山地森林游憩机会谱,将北京城郊山地森林游憩区分为城郊开发区域、城郊自然区域、乡村开发区域、乡村自然区域和半原始区域五个游憩机会等级,并结合目前的北京市游憩资源的利用和管理现状,用GIS作图直观展示了各游憩机会的分布,分析比较了各游憩机会的供需状况,为北京城郊森林游憩的规划和管理提出了合理化建议。  相似文献