首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 78 毫秒
1.
Aharon Kellerman 《Geoforum》1981,12(4):371-375
Retail ribbon developments specializing in the automobile, furniture and food trades arise mainly along highways. Such a ribbon development has evolved during the last few years in the industrial area of Haifa, located between the core city and the suburbs, and specializing mainly in the automobile and furniture businesses. with two concentrations near major junctions. This ribbon development does not represent competition with the city's CBDs, and is balanced by government industrial location policies.  相似文献   

2.
The Netherlands is one of the most secularized countries in the western world. The aim of this paper is to put the secularization process in both historical and geographical perspective. As a mass process secularization started in the last quarter of the nineteenth century and accelerated from the sixties of this century onwards. The first concentrations of non-denominationalism could be found in the (Protestant) countryside of Friesland and Groningen as a consequence of profound social cleavages. Then, the big cities in the west took part in the process and more recently even the Catholic areas were affected due to the cultural revolution of the sixties and early seventies. Two counterforces were analysed: a religious revival within the Protestant community and the increasing proportion of Muslims and Hindus as a consequence of immigration and high fertility levels. This revised version was published online in August 2006 with corrections to the Cover Date.  相似文献   

3.
After a short period of propagation of Wegener's continental drift ideas in Russia in the twenties and first half of the thirties of this century, there came a much longer period (1935–1960) of fixist reaction', when vertical tectonic movements were regarded as primary and most important and horizontal ones as secondary and subsidiary. In the sixties, interest in the manifestation of horizontal movements on strike-slip faults, overthrusts and nappe formation began to grow, and at the verge of sixties and seventies ideas of plate tectonics began to penetrate into Russia. But at the begining they met strong resistance mainly from the older generation of scientists. In spite of this, these ideas finally gained the support of the majority of Earth scientists in this country. Russian geologists and geophysicists made a significant contribution to the development of the plate tectonics theory as well as in its regional, global and theoretical aspects.  相似文献   

4.
Since the early 1980's the number of retail shops has declined, while the real volume of retail sales has increased in Japan. The MITI introduced the convenience store from the United States as a new retail type for modernizing small stores in the early 1970's. Curiously, it has seen a significant increase, and now accounts for over 50 000 units nation wide. It has developed not only in urban area but also in rural area. Various location types are seen. It enters into a phase of hard competition between stores. Many traditional small individual retail shops run into closure with the apparition of the convenience store. The convenience store fitted the contemporary life style by extending business hours and an adequate marketing strategy. It sells time and merchandise conveniences for consumers introducing sophisticated management and logistics systems by POS and EOS. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

5.
新疆降水在气候转型中的信号反应   总被引:53,自引:21,他引:32  
韩萍  薛燕  苏宏超 《冰川冻土》2003,25(2):179-182
针对气候转型科学问题的提出,根据新疆61处国家水文气象观测站点的资料,通过5a滑动平均、模比系数差积曲线、线性趋势等方法对新疆降水分析计算.结果显示,近50a来新疆年降水量总体呈增加的变化趋势,全疆年降水量平均增幅0.67mm·a-1,天山山区增幅最大,达1.0~2.8mm·a-1.由减少转为增加变化的时间大多出现于1987年前后,以此为界,从1987年起气候转向暖湿的强劲信号不仅反映在新疆的天山西部地区,而且在全疆也有所反映,且南疆强于北疆,西部多于东部.  相似文献   

6.
The period stemming from the late 1990s has witnessed the emergence of large scale city centre retail developments across England. Such projects have received government support because of their association with urban sustainability, in addition to the potential to catalyse broader regeneration and gentrification processes. Whereas some early projects proceeded relatively quickly, other schemes were delayed by complex land assembly requirements. Investigating beyond the formal compulsory purchase process, this paper draws on small businesses’ experiences of the land assembly process to provide a critical perspective on contemporary urban developments. It does so by drawing on interview material collected from small businesses affected by a proposed Retail Core Expansion within the city of Wolverhampton. By analysing attitudes towards communication practices, compensation discussions and relocation assistance, the picture is painted of an exclusionary development model and of limited support for existing land interests. Although active business responses are recognised, anxiety was prevalent because of the overwhelming dominance of future-orientated horizons and narratives.  相似文献   

7.
Rado Genorio 《GeoJournal》1993,30(3):225-229
This article shows the geographical dimensions of Slovene emigration around the world from the middle of the nineteenth century to now. During the period 1857–1871 approximately 544,000 people emigrated from Slovenia and of those, more than half left before World War I. Such a population loss places Slovenia among those European countries which suffered the greatest damage on account of emigration. The beginnings of the mass exodus to foreign countries goes back to the time when the Slovene population entered the first phase of demographic transition. Despite the natural increase in the population, the actual increase was half smaller because of emigration. In general it is possible to differentiate between emigration which took place before World War I, emigration between the two world wars, emigration after World War II until the end of the fifties and emigration since the beginning of the sixties. More than a century of mass emigration is closely connected to the territorial contraction of the Slovene ethnic space, to the abandonment of farming and the departure of the agrarian population from the Slovene littoral, Dinaric karst and Subpannonian areas.  相似文献   

8.
徐倩  李阳兵  黄娟 《中国岩溶》2018,37(4):545-554
选取贵州省清镇市近郊村域王家寨地区为研究对象,在GIS支持下,利用该区域1963年、1982年、2005年、2010年和2015年5期土地利用图形数据叠加分析,提取出研究区50余年来的土地利用/覆盖信息,并结合相应的社会经济统计数据,分析了其驱动力因子,其结果表明:(1)1963—2015年间,土地覆盖类型的总体变化为高被草地和平坝旱耕地明显减少,低被草地、农村居民点、工矿用地、公路用地面积大幅增加,其中,平坝旱耕地有向经济效益更高的土地利用方式转变的趋势;(2)景观格局演变的总体趋势是:自1963年起,斑块数量、斑块密度持续增加,到2015年呈下降趋势,而最大斑块指数逐年减小,形状趋于不规则,同时,近50年景观的多样性指数持续增加;(3)区内土地利用/覆盖和景观格局呈阶段性变化,从1963年到2005年,坡地土地利用活动较强,2005年后,平地土地利用强度增加、农业逐渐转型、聚落持续扩展;(4)区内土地利用及景观格局的变化主要受经济、人口和政策因素的影响。   相似文献   

9.
10.
Jowett AJ 《GeoJournal》1986,12(4):349-363
Since 1949 China's population has increased by 500 million and thereby grown at an average rate of 2 % per year. Annual growth rates have varied dramatically, falling from 3.3 % in 1963 to 1.2 % in 1979 and registering a population decline of 13.5 million in the famine years of 1960/61. China's demographic disaster in 1958/61 ranks as one of the most devastating in the history of the world. Chinese leaders have oscillated between pro- and anti-natalist policies. However, in the 1970s the government launched its third, its most intensive and to date its most successful family planning programme. So succesful that the total fertility rate declined from 6.4 in 1968 to 2.2 in 1980 and the level of contraceptive use in China was raised to the levels currently experienced in the Developed World. Despite the high rate of contraceptive prevalence, induced abortion is still extensively used to prevent unplanned births. The extent to which China's birth control programme has been implemented on a voluntary, coercive or compulsory basis is open to question. A rapid increase in the age of marriage and a substantial improvement in female education have made important contributions to the decline in fertility. Large differences in fertility exist between rural and urban China, reflecting significant differences in the average age of marriage and the very marked difference in educational attainment between the cities and the countryside. Whether the government directed family planning programme or socio-economic development has had the greatest impact on the decline in fertility, is under discussion. Whatever the motive force, the pace of demographic modernisation has been impressive and by international standards China now enjoys advanced levels of demographic development at an early stage of economic development.Abbreviations CMP-SPRCP-75-114 China Mainland Press, Survey of People's Republic of China Press 1975, No. 114. - FBIS-CHI-83-112 Foreign Broadcast Information Service, Daily Report, China, 1983, No. 112. - JPRS-CPS-85-012 Joint Publications Research Service, China Report, Political, Sociological and Military Affairs, 1985, No. 12. - SWB/FE/6246/BII Summary of World Broadcast, Far East, No. 6246, section BII.  相似文献   

11.
A.E. Green  D.W. Owen   《Geoforum》1985,16(4):387-402
In this paper an attempt is made to study the spatial division of labour in Britain, through an investigation of the changing structure of employment in the manufacturing sector between 1971 and 1981. The separate impacts of loss in the volume of manufacturing employment, change in the balance between production and non-production activities in the occupational structure and the spatial shift of the population employed in manufacturing upon spatial variations in manufacturing employment change are tentatively identified. Data on the socio-economic composition of the population employed in manufacturing from the Small Area Statistics of the Censuses of Population for 1971 and 1981 are used to measure the impact of these processes at the local labour market area (LLMA) scale and to draw conclusions for the future employment prospects of different parts of Britain.  相似文献   

12.
Building on the idea that small-scale entrepreneurship often takes place in peripheral regions, the present study examines retail enterprise in the late nineteenth-century U.S., focusing on ethnic group differences across the North, South, and West. Applying theories of middleman minorities and internal colonialism, the study proposes that European immigrants and native whites had their highest retail enterprise levels in the South, where large, oppressed black populations were compelled to patronize non-black merchants, owing to a dearth of black retail proprietors. Multiple regression analyses of Census data support this proposition, calling attention to the importance of black population size as a heretofore neglected factor in regional variation in retail enterprise among European immigrants and native whites in late nineteenth-century America.  相似文献   

13.
Sediment cores were collected from the Tilbury Tidal Basin in the Thames Estuary to determine the depositional history of metals in the estuary. Profiles of metals in sediments deposited in the lower Thames Estuary show a 30–50% decrease in concentration for Ag, Cd, Cu, Pb, and Zn, and a 70% decrease for Hg in recent decades. Historic depth soundings data showed the decreases in metal concentrations occurred between 1944 and 1966. The decline in sediment metal concentrations has been attributed to reduced inputs to the estuary, following updating of the major sewage treatment works in 1959 and 1963. This is indicated by the through-core distribution of Mn which implies that prior to 1960 the sediments were deposited in anoxic conditions, which subsequently improved. An increase in Mn concentrations observed in one of the cores has been attributed to increases in the dissolved oxygen of the estuarine waters resulting from the increased efficiency of the sewage treatment works.  相似文献   

14.
中国地质科学50年的简要回顾   总被引:2,自引:1,他引:1  
在世界之效科学技术大发展的现阶段,中国地质科学必将发展,因为它具箅了社会需求、科学问题和社会基础技术三个科学发展的条件。由于中国地质学奠基者的远见卓识,中国地质学在本世纪20~30年代已建立了世界声誉。新中国建立后,50~70年代中国地质科学取得迅速工。自70年代珂至今的改革开放时期更取得了全面的发展。随着地球系统科学的新概念为广大地质学者所接受,地质学各分支学科必将走向互相交驻融合,形成综合的和  相似文献   

15.
Spain's Mediterranean coastline is strongly influenced by conflicts between different land utilization. Space of diverse qualities (sunshine, proximity to the sea, ground-water, modes of transport, quality of soil) represents a limited resource that can either be wasted by specific preferences of be preserved and used in public interest.The activity that uses up most land is national and international hard tourism, which has influenced the appearance of the coastline since the nineteensixties. Unplanned building of holiday residences and of settlements (urbanizaciones) as well as the high concentration of hotels along the beach have resulted in excessive use with nearly irreparable desasters.Land prices rose dramatically in the sixties and in the first half of the seventies. In the meantime, however, the bad state of the nation's economy has put the lid on it. Pollution and high traffic density, provoked among others by tourism, eventually boomerang against tourism itself.Agricultural areas of high yields in the huertas tend to disappear. Tenants and labourers leave and seek for jobs in construction or services. In a few cases only does tourism lead to a more intensive tillage. It is not only the unlimited desires of a leisure-oriented society that causes such destructive development, but also, speculation among land owners and contractors in order to achieve the highest profit possible as well as the lack of planning and of steadfastness within public administration.  相似文献   

16.
The National Oceanic and Atmospheric Administration (NOAA) Status and Trends Mussel Watch Program sampled the largest oysters in nearly every major US coastal lagoon and estuary in the Gulf of Mexico once during the winter from 1986 to 2010. This contribution examines trends in the principal oyster disease in the Gulf of Mexico, Dermo, caused by Perkinsus marinus, and some related population dynamic characteristics for its host, Crassostrea virginica. During the 1986–2000 period, P. marinus prevalence and infection intensity and oyster population dynamics followed the El Niño-Southern Oscillation (ENSO) cycle, responding to variations in salinity caused by variations in rainfall and freshwater inflow. The ENSO signal in the oyster population effectively ceased circa 2002. Beginning around this time, wintertime P. marinus prevalence and weighted prevalence began a decadal decline, as did the length of the largest oysters and the fraction of these largest animals that were female. The trends in Dermo disease, oyster length, and oyster sex ratio are all consistent with the following hypothesis: increasing temperature during the 2000s resulted in an increase in P. marinus infection intensity sufficient to increase the mortality rate in late summer and fall in the larger animals. This simultaneously reduced Dermo prevalence and infection intensity in the winter at the time of sampling and also resulted in the decline in the length of the largest animals targeted by Mussel Watch. Coincident with the decline in length is the expected decline in the fraction female, such that the percent female in the largest animals dropped to ≤50 % throughout much of the Gulf of Mexico. The decline in length leading to fewer large animals reproducing and the loss of females are predicted to have reduced oyster population reproductive capacity substantially during the 2000s. The early 60 % of the Mussel Watch time series took place during a period of negative Atlantic Multidecadal Oscillation (AMO) indices. The AMO moved into positive territory circa 2000. A positive AMO index is consistent with observed warmer water temperatures, and increased water temperature is consistent with an increase in Dermo-induced mortality.  相似文献   

17.
While the rise in the proportion of urban dwellers in the Soviet population as a whole has somewhat slowed down, urbanisation has been rapidly continuing in the seventies; it has, however, acquired a certain new character through processes of intensification of urban life. The following of these processes are examined in the paper: concentration of the population in the larger cities, the development of agglomerations and whole systems of urban settlement, the geographical expansion of the large cities' contours. Factors leading to the rise of cities are also undergoing a partial change: their connexion with the growth of material production is becoming more flexible and more mediative; many republican and oblast' capital cities, those centres of administrative, economic-organizational and scientific research functions supported by a highly developed infrastructure are growing more rapidly than other cities.  相似文献   

18.
The paper examines organizational and spatial responses of metropolitan retail trade in Israel to increases in demand. Since the late 1960s until 1984 Israel enjoyed continuous increases in incomes, rates of car ownership and dwelling sizes. These coincided with a suburbanization of population in the metropolitan areas of Tel-Aviv and Haifa. Consequently, there developed four new forms of retailing, namely ribbons in industrial areas, factory retail outlets, hypermarkets and shopping malls. Locational and other characteristics of these forms of commerce are discussed. Special criticism is pointed at an undifferentiated evolution of ribbons and outlets. I wish to thank Ms. Naomi Elad and Mr. Moshe Schmerler for field work in metropolitan Haifa and Tel-Aviv respectively.  相似文献   

19.
Jörg Janzen 《Geoforum》1983,14(3):289-309
Sweeping changes have recently taken place in the life and economic circumstances of nomadic peoples in the countries of the Islamic East. In this respect, the ‘small’ oil-rich Gulf states are in a somewhat different position. In contrast to many other countries with nomadic populations, the prospects for the integration of the non-sedentary elements of the population into the process of modern development are more favourable in the Gulf states, chiefly because of their wealth in oil. The Omani government has devoted special attention to the development of the nomadic environment in the southern province of Dhofar following the end of the Dhofar conflict. A speedy expansion of the technological and social infrastructure took place on the basis of a newly created central place system of government centres. This covered the extension or provision of transport facilities, water supply, education, rural health services, religious establishments, the distribution of basic requisites to the population and the stimulation of retail trade. Additional government measures comprised the construction of low-cost housing for refugees, the allocation of building sites, financial assistance to the socially deprived and subsidies to shaykhs, as well as various small-scale programmes for the improvement of agriculture, livestock and fisheries. A further essential contribution to modern development has been the creation of thousands of new jobs, above all in the state's public service sector. The effects of the new opportunities for employment, together with relatively high cash incomes now available for many nomadic families, can be seen in numerous changes. The most important new trends can be summarised as the decline of the caravan trade, the advent of motor transport, an increasing rate of permanent settlement accompanied by a switch to gardening, the practice of commuting to fixed employment instead of nomadism, dependence on external food and outside markets and economic dependence on allowances, standardized tents and stone houses in place of the traditional dwellings. It can generally be confirmed that the nomadic population of Dhofar has shared in modern development in a variety of ways. However, a marked gap in development exists between the coastal area in the south with its settled population and the nomadic living space in the interior of Dhofar. Only the speedy introduction of a development programme that caters for the specific interests of the nomads can satisfactorily achieve their ultimate integration. If such measures fail to materialise one must fear a long-term social and economic decline for the majority of nomads in Dhofar and their reduction to a marginal status.  相似文献   

20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号