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 140 毫秒
1.
于世永  朱诚  王富葆  李弘 《地理科学》2000,20(4):331-336
太湖流域埋藏古树、泥炭、贝壳堤和新石器文化遗址,^14C年代频率变化揭示了全新世气候-海面波动与文明兴衰的时间耦合关系。本区降水量的明显增加始于8kaB.P.、7.5 ̄4kaB.P.总的看为高海面和新石器文化发展时期,但其间有相对的海面波动,即:7 ̄6.5kaB.P.为高海面期、6.3 ̄5.6kaB.P.为低海面期、4.5 ̄4kaB.P.为低海面期、3.8 ̄3.5kaB.P.为高海面期。从文化断层  相似文献   

2.
晚冰期以来毛乌素沙漠环境特征的湖沼相沉积记录   总被引:24,自引:8,他引:16  
苏志珠  李小强 《中国沙漠》1999,19(2):104-109
毛乌素沙漠南缘靖边海则滩湖沼相沉积剖面,真实地记录了晚冰期以来东亚季风气候和沙漠演化历史。在地层沉积相划分和测年基础上,据地球化学元素和孢粉等气候指标分析表明,该区古气候变迁序列为:12kaBP前干燥寒冷;12~10kaBP气候转暖湿;10~8.5kaBP以温湿为主,在10~9.5kaBP出现YoungerDryas冷干事件;8.5~3.0kaBP温暖湿润;3.0kaBP后气候趋于半干旱与现代气候较接近。这种气候演化规律是受地球轨道因素影响,通过东亚冬夏季风的强弱变化来实现的  相似文献   

3.
祁连山东段北麓近10ka来的气候变化初步研究   总被引:14,自引:4,他引:10  
邬光剑  潘保田 《中国沙漠》1998,18(3):193-200
磁化率、碳酸钙含量和有机碳含量可用作良好的气候指标,主要是反映了降水量的变化。祁连山东段北麓哈溪剖面研究表明,9560aB.P.时本区已进入全新世。大暖期是对温度而言,与气候适宜期是不同的概念,二者在时间上也不一定是同时的。本区的气候适宜期为6.8~3.6kaB.P.,气候最宜期为5.0~3.6kaB.P.,与其它记录有不同之处。在7.8~7.2kaB.P.和1.5~0.8kaB.P.间出现了“冷湿”的气候组合,这与传统的气候组合不同,但后一阶段的“冷湿”是有大量证据的。9.0~8.7kaB.P.间是全新世最干旱的时段,堆积了砂黄土。  相似文献   

4.
南极15ka以来海洋沉积物的环境磁学研究   总被引:4,自引:2,他引:4       下载免费PDF全文
通过对东南极普里兹湾陆坡区NP95-1及西南极长城湾NG93-1两柱样系统的环境磁学研究,获得了南极地区15.0~5.5kaB.P.以来的古气候变化序列。结果表明,磁学参数较好地记录了古气候变化及沉积环境变化的信息。NP95-1柱样较好地记录了Heinrich1事件、新仙女木事件以及波令-阿罗德暖期,其中Heinrich1事件发生于14.3kaB.P.,新仙女木冷期为11.7~10.3kaB.P.,10.3kaB.P.以后,南极地区进入全新世。在全新世,两柱样记录了在10.0kaB.P.及6.0kaB.P.前后两个暖期,其间夹有小幅气温下调的时段;6.0kaB.P.后,两柱样均有气候颤动变冷的记录。  相似文献   

5.
祁连山东段全新世与现代水热组合特征研究   总被引:6,自引:3,他引:6  
位于祁连山北麓的扁都口和哈溪记录了该地区的全新世气候变化。采用磁化率、有机碳含量和碳酸钙含量作为降水指标,其记录的水分变化与冰芯及其他记录的对比,显示了地区全新世水热组合变化的特征。传统的大暖期鼎盛阶段并非本研究的气候最宜期。5.2~4.0kaB.P。.本区的环境相当优越,是气候最宜期。4.0kaB.P.存在一次比3.0kaB.P.明显的气候恶化,地层和剖面记录突出。2.0~1.0kaB.P.是低  相似文献   

6.
毛乌素沙地全新世地层化学元素特点及其古气候意义   总被引:13,自引:6,他引:13  
系统采集毛乌素沙地东、西部各一个全新世地层剖面样品作全量化学分析。根据景观地球化学特征的变化,推论一万年以来气候的变化过程:10.5—10ka,B.P.、6—50ka,B.P.、3.5ka,B.P.、2.5ka,B.P.和1.5—1ka,B.P.期间分别为化学风化较强,钠、钾淋失较多,而钙、镁、铝、铁、钛相对富集的相对湿润时期;夹于其间的则是化学风化较弱,钠钾相对富集,相对干燥的风化活动时期。  相似文献   

7.
试论第四纪晚期中国古人类三次迁移与气候变化   总被引:6,自引:1,他引:6  
陆巍  吴宝鲁 《地理学报》1997,52(5):394-402
本文整理了旧石器晚期以来石陶文化的特征,提出了一个“第四纪晚期中国古人类三次迁移”猜想,即五万年以来中国古文化发生过三次南北大融合;第一次,50kaBP-40kaBP,南民北移;第二次,18kaBP-13kaBP,北民南移;,第三次,10kaBP-8.3kaBP,南民又北移,成为中原新石器文化的南源;以瓦皮岩人迁到关中为典型,促进了中原新石器文化的敏荣和中华文明的兴起。  相似文献   

8.
南京汤山猿人生存古环境重建探讨   总被引:7,自引:1,他引:6  
朱诚  张建新 《地理科学》1998,18(5):433-441
由铀系法测定的5组化石年代数据表明,南京汤山猿人年代为280 ̄430kaB.P.之间;以剑齿象,李氏野猪,肿骨鹿,葛氏斑鹿、三门马等为主的古动物群化石,证实了南京猿人生活在中更新世中期偏晚,距今约350ka左右。鉴定的孢粉主要为喜暖湿、暖干的落叶阔叶与针叶及蕨类混合林以及偏干凉的(松)针叶林、既未发现反映寒冷的云杉、冷杉、也未发现反映干旱的黄连木,表明本区猿人生存时并未经历中更新世冰期时的冰川环境  相似文献   

9.
塔克拉玛干沙漠腹地晚冰期以来的环境与气候变化   总被引:6,自引:1,他引:6  
通过对塔克拉玛干沙漠腹地地层剖面的沉积类型、孢粉、pH值、有机质、CaCO_3和地球化学气候指标C等分析,认为本区晚冰期以来一直处于荒漠环境,气候变化可划出四个阶段:13-10kaB.P.气候寒冷。温凉,干旱,湿度相对后期较大;10-8kaB.P.气候温暖干旱,湿度相对减小;8-3kaB.P.气候炎热干旱,湿度最小;3kaB.P.至今气候温暖干旱,湿度较前增大,气候及环境与今相似。  相似文献   

10.
河西走廊平原区全新世河流阶地对气候变化的响应   总被引:21,自引:4,他引:21  
李有利  杨景春 《地理科学》1997,17(3):248-252
河西走廓的古洋河,黑河,北大河和疏勒不可在平原发育了两级阶地,根据^14C测年数据,低阶地形成于5.57-3.15kaB.P.,高阶地形成于11-8kgB.P.,在8-6kaB.P.之间为河流下切期。  相似文献   

11.
BOOK REVIEWS     
Book Reviewed in this article: Development and Environment in Peninsular Malaysia . S. Robert Aiken, Colin H. Leigh, Thomas R. Leinbach, Michael R. Moss. The Rural-Urban Fringe: Canadian Perspectives . Ken B. Beesley and Lorne H. Russwurm, eds. Women and Development . Lourdes Benería, ed. The Border that Joins: Mexican Migrants and U.S. Responsibility . Peter G. Brown and Henry Shue, eds. Cities of the World: World Regional Urban Development . Stanley D. Brunn and Jack L. Williams, eds. Time Resources, Society, and Ecology: On the Capacity for Human Interaction in Space and Time (Vol. I, Preindustrial Societies). Tommy Carlstein. Urban Geography . David Clark. Spanish City Planning in North America . Dora P. Crouch, Daniel J. Garr, and Axel I. Mundigo. Not On Our Street: Community Attitudes to Mental Health Care . M. J. Dear and S. M. Taylor Unequal growth: Urban and Regional Employment Change in the U.K. Stephen Fothergill and Graham Gudgin. Agricultural Land in an Urban Society . Owen J. Furuseth and John T. Pierce. The Petroleum Industry in Oil-Importing Developing Countries . Fariborz Ghadar. Historical Understanding in Geography, An Idealist Approach . Leonard Guelke. Regional Planning in Europe . R. Hudson and J. R. Lewis, eds. Remote Sensing for Resource Management . Chris J. Johannsen and James L. Sanders, eds. Geography and The State . R. J. Johnston. Texas Graveyards: a Cultural Legacy . Tlrry G. Jordan. The Politics of Location: An Introduction . Andrew Kirby. A Social Geography of the City . David Ley. Energy and the Future . Douglas MacLean and Peter Brown, eds. The Natural Environment of Newfoundland Past and Present . A. G. Macpherson and J. B. Macpherson, eds. Tourism: Economic, Physical and Social Impacts . Alister Mathieson and Geoffrey Wall. Railroads and Land Grant Policy: A Study in Government Intervention . Lloyd J. Mercer. Progress in Rural Geography . Michael Pacione, ed. Progress in Urban Geography . Michael Pacione, ed. Models of Spatial Inequality: Settlement Patterns in Historical Archaeology . Robert Paynter. Natural Hazard Risk Assessment and Public Policy, Anticipating the Unexpected . William J. Petak and Arthur A. Atkisson. The Nature of Geomorphology . Alistair F. Pitty. Regional Conflict and National Policy . Kent A. Price Women and Spatial Change: Learning Resources for Social Science Courses . Arlene C. Rengert and Janice J. Monk, eds. Urban and Regional Analysis for Development Planning . Richard Rhoda. Rivers: Form and Process in Alluvial Channels . Keith Richards. This Remarkable Continent: An Atlas of United States and Canadian Society and Culture . John F. Rooney, Jr., Wilbur Zelinsky, and Dean R. Louder, gen. eds. The Origins of Open-Field Agriculture . Trevor Rowley, ed. Residential Location Determinants of the Older Population . Gundars Rudzitis. Borderland Sourcebook: A Guide to the Literature on Northern Mexico and the American Southwest . Ellwyn R. Stoddard, Richard L. Nostrand, and Jonathan P. West, eds. Arctic and Antarctic . David Sugden. Tall Timbers Ecology and Management Conference, February 22–24, 1979, Proceedings No. 16 . Graphic Communication and Design in Contemporary Cartography (Progress in Contemporary Cartography , Vol. II). D. R. Fraser Taylor, ed. Living with Energy Shortfall: A Future for American Towns and Cities . Jon Van Til. The United States: Habitation of Hope . J. Wreford Watson. Air Photo Interpretation for Archaeologists . D. R. Wilson. Urban and Rural Change in West Germany . Trevor Wild, ed. Population and Resources . Harry Robinson.  相似文献   

12.
<正>1 Introduction In 2013,Chagusaba,which is traditional tea-grass integrated system in Shizuoka,were accepted as new world heritage site of agriculture.Shizuoka prefecture occupies a variety of elevations,from 0 to 3000m or more above sea level.Because of the diversity of land features and climates,this area produces 167 agricultural commodities.In addition,a lot of traditional agriculture and over200 local native varieties of crops have been conserved in Shizuoka  相似文献   

13.
<正>There are more than 10000 years of agricultural development history in the world that has provided very fruitful and ingenious traditional knowledge and experiences reflecting the evolution of humanity and the nature.In2002,the Food and Agriculture Organization of the United Nations(FAO)initiated an international partnership initiative of"Conservation and Adaptive Management of Globally Important Agricultural Heritage Systems  相似文献   

14.
15.
BOOK REVIEWS     
Book Reviewed in this article: Geography and the Third World. International Seminar, 14–18 May 1980, Kuala Lumpur, Malaysia . Ishmail Ahmad and Jamaluddin Md Jahi, eds. The Growth Dilemma: Residents' Views and Local Population Change in the United States . Mark Baldassare. Sport and Place: A Geography of Sport in England, Scotland & Wales . John Bale. The Deindustrialization of America: Plant Closings, Community Abandonment, and the Dismantling of Basic Industry . Barry Bluestone and Bennett Harrison. Selected Essays 1963–1975: Carl O. Sauer . Bob Callahen, ed. Housing and Planning in the Countryside . G. Clark. Conflict, Politics and the Urban Scene . Kevin R. Cox and R. J. Johnston, eds. Thematic Maps: Their Design and Production . David J. Cuff and Mark T. Mattson. Wine: A Geographic Appreciation . Harm Jan de Blij. USSR in Maps . J. C. Dewdney. Political Geography: A Contemporary Perspective . Ramesh D. Dikshit. Rethinking Human Adaptation . Rada Dyson-Hudson and Michael A. Little, eds. Sacred Sands: The Struggle for Community in the indiana Dunes . J. Ronald Engel. Geography of the Biosphere . A. Furley and Walter W. Newey. Disaster and Reconstruction . Robert Geipel. Glasgow: The Making of a City . Andrew Gibb. Design for Arid Regions . Giden S. Golany, ed. Urbanization and Cancer Mortality: The United States Experience, 1950–1975 . Michael R. Greenberg. Geology in the Nineteenth Century: Changing Views of a Changing World . Mott T. Greene. Colonización y Destrucción de Bosques en Panamá . Stanley Heckadon Moreno and Alberto McKay, eds. Urban Geography: A First Approach . David T. Herbert and Colin J. Thomas. The Visual and Spatial Structure of Landscapes . Tadahiko Higuchi. Climate from Tree Rings . M. K. Hughes, P. M. Kelly, J. R. Pilcher, and V. C. LaMarche, Jr., eds. The structure of Nineteenth Century Cities . James H. Johnson and Colin G. Pooley, eds. The American Planner: Biographies and Recollections . Donald A. Krueckeberg, ed. Urban Land Policy For the 1980s, the Message for State and Local Government . George Lefcoe, ed. Regional Planning: Evolution, Crisis and Prospects . Gill C. Lim, ed. Relevance and Ethics In Geography . Bruce Mitchell and Dianne Draper. China: The Geography of Development and Modernization . Clifton W. Pannell and Laurence J. C. MA. The Urban Retailing System . Robert B. Potter. Hants. Nonconventional Energy Resources . Philip R. Pryde. Caribbean Migrants: Environment and Human Survival on St. Kitts and Nevis . Bonham C. Richardson. Population and Resources . Harry Robinson. East Los Angeles: History of A Barrio . Ricardo Romo. Integrated Impact Assessment . Frederick A. Rossini and Alan L. Porter, eds. Environmental Aesthetics: Essays in Interpretation . Barry Sadler and Allen Carlson, eds. Earthwatch . Charles Sheffield. Field Techniques and Research Methods in Geography . Robert H. Stoddard. Haiti: Land of Poverty . Robert J. Tata. Weathering and Erosion: Sources and Methods in Geography . Stephen T. Trudgill. Once Beneath the Forest. Prehistoric Terracing in the Río Bec Region of the Maya Lowlands . B. L. Turner, II. The Historical Geography of Scotland since 1707 . David Turnock.  相似文献   

16.
BOOK REVIEWS     
Book Reviewed in this article: The City in Cultural Context . John Agnew, John Mercer, David Sopher, eds. Soils and Geomorphology Peter W. Birkeland. Urbanization and Settlement Systems, International Perspectives . L. S. Bourne, R. Sinclair, and K. Dziewoński. eds. An Introduction to Urban Historical Geography . Harold Carter. Overshoot, The Ecological Basis of Revolutionary Change . William J. Catton, Jr. Rivers of the World . Eberhard Czaya. Jewish Communities in Frontier Societies: Argentina, Australia and South Africa . Daniel J. Elazar with Peter Medding. Color in Public Spaces: Toward a Communication-Based Theory of the Urban Built Environment. Kenneth E. Foote. Spatial Statistics and Models. Gary L. Gaile and Cort J. Willmott, eds. Mega-Geomorphology. Rita Gardner and Helen Scoging, eds. Technological Change and Regional Development. Gillespie, ed. The Arid Lands: Their Use and Abuse. R. L. Heathcote. The Location of Industry in Britain. A. G. Hoare. Groundwater as a Geomorphic Agent . R. G. LaFleur, ed. Rural Public Services: International Comparisons. Richard E. Lonsdale and Gyorgy Enyedi, eds. Saving Water in a Desert City. William E. Martin, Helen M. Ingram, Nancy K. Laney, and Adrian H. Griffin. Water Resources: Distribution, Use and Management. John R. Mather. Transnationals and the Third World: The Struggle for Culture. Armand Mattelart. South Hadley, MA: USGS Digital Cartographic Data Standards. R. B. McEwen, R. E. Witmer, and B. S. Ramey, eds. The Ecosystem Concept in Anthropology. Emilio F. Moran, ed. Boulder, CO: Women, Men, and the International Division of Labor. June Nash and Maria Patricia Fernandez-Kelly, eds. Nuclear Power: Assessing and Managing Hazardous Technology. Martin J. Pasqualetti and K. David Pijawka, eds. Mary Somerville and the Cultivation of Science 1815-1840. Elizabeth Chalmers Patterson. An Introduction to Coastal Geomorphology. John Pethick. Late Quaternary Environments of the United States , Vol. 1, The Late Pleistocene. Stephen C. Porter, ed. Planning and Ecology. R. D. Roberts and T. M. Roberts, eds. Regionalism and the Pacific Northwest. William G. Robbins, Robert J. Frank, and Richard E. Ross, eds. Environment and Health. Anthony J. Rowland and Paul Cooper. Sunbelt/Snowbelt: Urban Development and Regional Restructuring. Larry Sawers and William K. Tabb, eds. The Bad Earth. Environmental Degradation in China. Vaclav Smil. Armonk, NY: Voyage into Substance: Art, Science, Nature, and the Illustrated Travel Account, 1760–1840. Barbara Maria Stafford. The Institute of British Geographers: The First Fifty Years. Robert W. Steel. Visions of the Past. Christopher Taylor and Richard Muir. Glacial Lake Agassiz. J. T. Teller and Lee Clayton, eds. The Tule Breakers: The Story of the California Dredge. John Thompson and Edward A. Dutra. The Balkan City 1400–1900. Nikolai Todorov. Explanation, Prediction and Planning: the Lowry model. Michael J. Webber. Mercedes Reales: Hispanic Land Grants of the Upper Rio Grande Region. Victor Westphall. The World Atlas of Revolutions. Andrew J. M. Wheatcroft. The West European City, A Social Geography. Paul White. Urban Elites and Mass Transportation. J. Allen Whitt. Princeton, NJ: Urban Life In Contemporary China. Martin King Whyte and William L. Parish. The Demand for Energy in the Soviet Union. David Wilson. London and Canberra: Rethinking Geographical Inquiry. J. David Wood, ed.  相似文献   

17.

Reviews of geographic software in this article:

DEMO-GRAPHICS: WORLD POPULATIONS AND PROJECTIONS.

ESP

GAUSS.

CEMODEL S. Damus

LIMDEP. William H. Greene

MICROSTAT 4.1

OTIS

PCIPS. (Personal Computer Image Processing System). H.J. Meyers and R. Bernstein.

REGRESSION ANALYSIS OF TIME SERIES (RATS)

SPSS/PC+

URBAN DATA MANAGEMENT SOFTWARE (UDMS)  相似文献   

18.
19.
20.
BOOK REVIEWS     
Book Reviewed in this article: Rabat: Urban Apartheid in Morocco . Janet Abu -Lughod . Marketplaces in a Developing Country: The Case of Western Nigeria . Isaac Ayinde Adalemo . Farming Development and Space: A World Agricultural Geography . Bernd Andreae . Section and Party: A Political Geography of American Presidential Elections, from Andrew Jackson to Ronald Reagan . J. Clark Archer and Peter J. Taylor . Women and Space: Ground Rules and Social Maps . Shirley Ardener , ed. European Progress in Spatial Analysis . R. J. Bennett , ed. The Origins of Academic Geography in the United States . Brian W. Blouet Geographic Perspectives on Global Problems . Ronald Reed Boyce . Seasonal Dimensions to Rural Poverty . Robert Chambers , Richard Longhurst and Arnold Pacey eds. The New Nationalism and the Use of Common Spaces: Issues in Marine Pollution and the Exploitation of Antarctica . Jonathan I. Charney , ed. Communications Tomorrow: The Coming of the Information Society . Edward Cornish , ed. The Design of Suburbia . Arthur Edwards . Explorer on the Northern Plains: Lieutenant Gouverneur K. Warren's Preliminary Report of Explorations in Nebraska and Dakota in the Years 1855–56–57. With an Introduction by Frank N. Schubert . The Changing Climate: Responses of the Natural Flora and Fauna . Michael J. Ford . Essentials of Physical Geography . Robert E. Gabler , Robert J. Sager , Sheila Brazier , and Daniel L. Wise. The Road to Jaramillo . William Glen . Valued Environments . John R. Gold and Jacquelin Burgess , eds. Proximity and Preference: Problems in the Multidimensional Analysis of Large Data Sets . Reginald G. Golledge and John N. Rayner , eds. A Search for Common Ground . Peter Gould and Gunnar Olsson , eds. Geography: Its History and Concepts . Arild Holt -Jensen . A Population Geography . Huw R. Jones . The Human Mosaic: A Thematic Introduction to Cultural Geography, 3rd ed. Terry G. Jordan and Lester Rowntree . Urban Social Geography: An Introduction . Paul Knox . The Anatomy of Job Loss: The How, Why and Where of Employment Decline . Doreen Massey and Richard Meegan . The Information Society as Post-Industial Society . Yoneji Masuda . Map Librarianship, 2nd ed. Harold Nichols . India: Cultural Patterns and Processes . Allen G. Noble and Ashok K. Dutt , eds. The God that Limps: Science and Technology in the Eighties . Colin Norman . Geography: An Introductory Perspective . Robert E. Norris , Keith D. Harries and John D. Vitek . The Politics of Technology Assessment . David M. O'Brien and Donald A. Marchand . Ethnic Segregation in Cities . Ceri Peach , Vaughan Robinson and Susan Smith , eds. Churches and Church Membership in the United States, 1980 . Bernard Quinn , Herman Anderson , Martin Bradley , Paul Goetting and Peggy Shriver . Energy in Australia: Politics and Economics . Hugh Saddler . Development from Above or Below? The Dialectics of Regional Planning in Developing Countries . Walter B. Stóuhr and D. R. Fraser Taylor , eds. Human Impact on the Ecosystem . Joy Tivy and Greg O'Hare . Plants and People: Vegetation Change in North America . Thomas R. Vale . The Mapmakers: The Story of the Great Pioneers in Cartography from Antiquity to the Space Age . John Noble Wilford .  相似文献   

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