侵蚀基准面下降对水系发育与产沙影响的实验研究

在3556mm/hr·cm²定雨强的人工降雨条件下,组成物质中径为0.021mm,侵蚀基准面两次下降的流域发育对比实验表明,水系发育以增加河道(沟道)数目及流域出口段河道下切、溯源侵蚀延伸长度两种方式进行最小消能,产沙过程具有明显的复杂响应特征。流域侵蚀产沙与水系分形维数间存在显著的非线性特征,分数维值与产沙量间呈不对称双曲线的关系。侵蚀基面下降导致流域势能的相对增大,在消能过程中,第一次基面下降带来的影响比第二次基面下降带来的影响要显著,在空间上,其影响随远离流域出口而减弱     

中国河流地貌研究进展——纪念沈玉昌先生100年诞辰

2016年是中国现代河流地貌研究的开拓者和奠基人沈玉昌先生100年诞辰,本文对中国河流地貌研究进展进行综述,以资纪念。研究涉及4个方面：① 水系发育与河谷地貌演变,包括大江大河水系历史发育和山区河流地貌;② 侵蚀与产沙过程,包括有物理成因基础的侵蚀产沙模型、侵蚀产沙过程的尺度效应、植被对侵蚀的影响及临界现象、坡面细沟发育过程模拟等;③ 河床过程与河型,包括河道冲淤过程、河床演变、河型成因与演变等;④ 河流地貌系统研究,包括流域系统不同子系统的耦合关系、河流地貌系统中的高含沙水流和多营力地貌过程、河流地貌系统对于自然因素变化和人类活动的响应、河流地貌系统中的泥沙灾害和河流地貌系统的实验研究等。50年前沈玉昌先生与钱宁先生提出在地貌学与河流动力学相结合的基础上发展中国河流学科。文中对此方面的进展进行了综述,并提出了需要深化和解决的问题。     

感潮河网地区水系结构特征及城市化响应

根据20世纪80年代初以及90年代末上海水资源普查的数据,尝试以水利片作为河网地区流域水系结构的基本单元, 类似Strahler水系分级,采用上海水资源管理信息系统中的河道分级体系作为水系分级方案,探讨了感潮河网地区的水系结构特征及城市化响应。研究表明：(1) 非高度城市化地区河网水系总体上具有Horton表现,反映在非高度城市化地区不同水利片的河道数目及河道平均长度随河道级别呈几何级数变化,不同等级水系的发育具有自相似特征。(2) 城市化是改变感潮河网地区水系结构的重要因素,在高度城市化的城区水利片,不同等级河网水系发育的自相似性特征已受到破坏,其影响集中表现为对河网水系分枝比和水面率的削弱,即高度城市化地区河网水系结构趋于简单,非主干河道减少,河网水面率与城市化水平成反比,反映出城市化过程中未能充分与河网结构保护相协调。(3) 河网水系的结构与功能参数之间具有显著的相关水平,说明河网地区水系形态结构与功能密切相关。由于城市化进程表现为对水面率以及分枝比的削弱,指示水面率和分枝比等指标具有表征城市化对水系结构影响的意义,在河网水系保护和结构恢复过程中应高度重视水面率、分枝比以及河网结构自然度等指标。     

黄河上游十大孔兑水系分形特征与侵蚀发育阶段研究（英文）

水系分形维数(Fractal dimension of gully network,D_g)反映了河网分布和水系发育的复杂程度。以位于黄河上游内蒙古段十大孔兑上游丘陵沟壑区为研究对象,利用计盒维数的方法,研究其水系分形特征,同时利用水系分维数D判断流域地貌所处的侵蚀发育阶段。结果表明,(1)以毛不拉孔兑为例,利用人工判定法,相关系数检验法和拟合误差相结合的方法确定无标度区为20~370 m。且各孔兑的地貌形态在该无标度区间内均表现出很好的分形特征,计盒维数可作为流域地貌形态分形特性的量化指标。求得十大孔兑上游丘陵沟壑区的水系分维数D_g为1.08~1.14。(2)十大孔兑水系分维值在不同的汇流面积阈值下变化不大;径流模数与河网分维存在正相关关系。产沙模数与河网分维的线性正相关关系反映了地貌发育幼壮年期地形条件对产沙的影响。(3)按水系分维数与流域起伏程度、坡度及等高线分维值的关系,就十大孔兑而言,当D_g≤1.06时,流域处于幼年期;当D_g1.06时,流域进入壮年期。水系分维数、高程积分值指示十大孔兑上游流域地貌均处于壮年期。     

冬小麦能量平衡及蒸散分配的季节变化分析

本文分析了华北平原冬小麦生态系统辐射收支、热量平衡以及蒸散在冠层蒸腾和土壤蒸发之间的分配特征。结果发现，在冬小麦生长过程中，系统截获的太阳短波辐射随小麦的生长而变，它占太阳总辐射的比例，初期为０．８左右，尔后随叶面积的增加而逐渐下降，在孕穗期最小，约为０．７５，之后，随叶片枯黄、麦穗的成长又上升，最后可达０．８６。净辐射占太阳总辐射的比例，可分成如下３个阶段：拔节期比值较低，约为０．４５；孕穗抽穗期约为０．５；灌浆期比值最大，约０．５７。随着叶面积指数（ＬＡＩ）的增加，土壤热通量与净辐射之比，由返青初期的０．１３迅速下降，直至较为稳定的０．０６。潜热通量消耗净辐射的大部分，且随ＬＡＩ的增加而增大。从返青到乳熟的５８天内（４月１日～５月２８日），麦田总蒸散量约为２５０ｍｍ，其中土壤蒸发量约为５０ｍｍ，冠层蒸腾约为２００ｍｍ，分别占总蒸散量的２０％和８０％。     

基于DEM黄土丘陵沟壑区不同尺度流域地貌现状及侵蚀产沙趋势

基于流域DEM对各个集水区进行划分,提取流域沟壑长度、平均高程、平均坡度等信息,并运用EXCEL、SPSS对这些信息进行分析处理,计算出沟壑密度、流域相对高程、面积-高程积分值,并结合流域侵蚀产沙数据以及实地考察情况,借助地貌学的相关理论,分析流域不同区域内、不同尺度流域地貌发育及侵蚀产沙情况.研究发现,流域左右两岸支流的发育数目、形状受邻近流域的影响;面积-高程积分值的大小能反应流域的地貌现状与侵蚀趋势,蛇家沟与岔巴沟的面积-高程积分值分别为0.547 5、0.463 7,但面积-高程积分值的大小及变化趋势还与流域最低点是否达到基岩有关;沟壑发育分为长度发育与宽度发育两个阶段,沟壑密度只是衡量地貌的一个重要指标,沟壑密度对流域侵蚀产沙的影响与沟壑的发育阶段有关;一般情况下产沙模数的大小与流域面积大小没有直接的关系,主要看流域内的地貌的发育阶段.     

快速城市化地区水系结构变化特征——以深圳市为例

为了探讨城市化对水系结构的影响,应用深圳市1982、2002年的二期水系详查图,定量分析了水系长度、密度、分枝比、分枝能力和分维数等参数的变化特征。结果表明: 快速城市化过程中, 深圳市的河道总长度减少、密度减小, 河道数目减少, 特别是低级别的支流减少较多; 河道的分枝比和分枝能力都有不同程度的弱化, 单个水系片区和全市的河流分维数都下降,河流具有简单化的趋势, 河流的多元化特征削弱; 对于不同水系片区来说, 其变化速度不同, 表明城市化过程对水系结构的干扰存在空间差异性。建议强力推进河流的蓝线规划和滨水区的开发管理, 将水网的保护和规划纳入到城市规划的管理范围; 注重在开发利用中的保护, 减少各类新建城市用地、农用地整理过程中对水系的破坏; 加大水土保持力度, 减少因水土流失导致河流淤塞; 加强管理, 严禁向河道中倾倒垃圾。     

黄河流域产水产沙、输移和沉积系统的划分

根据Schumm提出的河流系统的理论对黄河流域地貌系统进行了划分。结果表明 ,整个黄河流域地貌系统可以很明确地分为产水产沙系统、输移系统和沉积系统 ,其模式与Schumm的理想流域模式非常吻合 ,同时又表现出其特殊性。以河口镇为界 ,黄河流域上游和中下游两部分分别具有对应的产水系统、产沙系统和河道输移系统 ,各子系统处于动态变化过程中 ,存在一种强耦合关系 ,这种特点主要是由黄河流域的历史发育过程决定的。     

河西走廊沙区水面稳定性指标的观测研究

民勤、武威－古浪、临泽３个沙区９个指标的研究结果表明,沙面稳定性主要与植被盖度≤００７４ｍｍ细沙土含量、０．３－０．１ｍｍ中细沙含量及〉０．５ｍｍ粗沙含量有关;０．３－０．１ｍｍ的中细沙是沙面中最不稳定的因素,≤０．０７４ｍｍ细沙土主要为粘土成分。     

河西黑河(弱水)水系的变迁

中更新世晚期以来黑河流量逐渐减少,由外流河变为内流河,由统一水系变为各自的独立水系,中、下游由地面水和地下水相互转化,不少河道随流量变化及新构造运动影响而改道,从而沿岸新老绿洲互不相连。     

Journal of Resources and Ecology Total Contents of Volume 5, 2014

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BOOK REVIEWS

Books reviewed in this article: USA, Eine Geographische Landeskunde , Vol. I, Der Grossraum in Strukturellem, Wandel, 3rd Ed. Helmut Blume . Introduction to Remote Sensing . James B. Campbell . The Sounds of People and Places: Readings in the Geography of American Folk and Popular Music . George O. Carney , ED. Development and Underdevelopment . John Cole . Mobility and Employment in Urban Southeast Asia: Example from Indonesia and the Philippines . Michael A. Costello , Thomas R. Leinbach , AND Richard Ulack . Soviet Asia: Economic Development and National Policy Choices . Leslie Dienes . The Third World City . David Drakakis -Smith . Scholars' Guide to Washington, DC for Cartography and Remote Sensing Imagery (maps, charts, aerial photographs, satellite images, cartographic literature and geographic information systems). Ralph E. Ehrenberg . Population and Development in the Third World . Allan AND Anne Findlay . The Early Mapping of Hawaii . Gary L. Fitzpatrick . Energetics of Physical Environment: Energetic Approaches to Physical Geography . K. J. Gregory , ED. Wildland Recreation: Ecology and Management . William E. Hammitt and David N. Cole . Agricultural Commercialization and Government Policy in Africa . J. Hinderink AND J. J. Sterkenburg . The Dynamics of American Housing . James W. Hughes AND George Sternlieb . Thailand: Buddhist Kingdom as Modern Nation State . Charles F. Keyes . Resolving Locational Conflict . Robert W. Lake , ED. Lands at Risk in the Third World: Local-level Perspectives . Peter D. Little and Michael M. Horowitz , EDS. Nathaniel Southgate Shaler and the Culture of American Science . David N. Livingstone . Regions: The Economics and Politics of Territory . Ann R. Markusen . Wetlands . William J. Mitsch and James G. Gosselink . Historical Geography: Progress and Prospect . Michael Pacione , ED. Loess and Periglacial Phenomena . Marton P$eacsi and Hugh M. French , EDS. Regional Management of Metropolitan Floodplains, Experience in the United States and Abroad . Rutherford H. Platt , ED. Human Cartography: Mapping the World of Man . Janos Szegö . Atlas of Great Lakes Indian History . Helen H. Tanner , ED. The Botany of Mangroves . P. B. Tomlinson . Urban Spatial Traffic Patterns . Rodney Vaughan . The Night After … Climatic and Biological Consequences of a Nuclear War . Yevgeni Velikhov , ED. Industrial Geography . H. D. Watts . Dictionary of Quotations in Geography . James O. Wheeler and Francis M. Sibley . Vermont Townscape . Norman Wiliams , Jr. , Edmund K. Kellogg and Peter M. Lavigne .     

COMMENTS ON “SPATIAL VARIATION OF HILLSLOPE PROFILES IN THE CUMBERLAND PLATEAU,KENTUCKY” BY EDMUND B. WOOOS

Book Reviewed in this article:

Main Street: Northeastern Oregon: The Founding and Development of Small Towns. Barbara Ruth Bailey.

Food Politics: The Regional Conflict. David N. Balaam and Michael J. Carey, eds.

The International Economy and Industrial Development: Trade and Investment in the Third World. R. Ballance, J. Ansari and H. Singer.

Neighborhoods in Urban America. Ronald H. Bayor, ed.

The English Heartland. By Robert Beckinsale and Monica Beckinsale.

Regional Dimensions of Industrial Policy. Michael E. Bell and Paul S. Lande, eds.

Tension Areas of the World. D. Gordon Bennett, ed.

Latin America: an Introductory Survey. B. W. Blouet and O. M. Blouet, eds.

Integration and Division: Geographical Perspectives on the Northern Ireland Problem. Frederick W. Boal and J. Neville H. Douglas, eds.

Energy and Land Use. Robert W. Burchell and David Listokin, eds.

Slopes and Weathering. Michael Clarke and John Small.

Alaska's Rural Development. Peter G. Cornwall and Gerald McBeath, eds.

The Politics of Park Design: A History of Urban Parks in America. Galen Cranz.

World Congress on Land Policy, 1980, Proceedings. Matthew Cullen and Sharon Woolery, eds.

Oregon Divided: A Regional Geography. Samuel N. Dicken and Emily F. Dicken.

Urban Food Marketing and Third World Rural Development. T. Scarlett Epstein.

South Africa: Spatial Frameworks for Development. T. J. D. Fair.

Institutions and Geographical Patterns. Robin Flowerdew, ed.

Industrialization of U.S. Agriculture, An Interpretive Atlas. Howard F. Gregor.

Planning Theory: Prospects for the 1980s. Patsy Healy, Glen McDougall and Michael J. Thomas, eds.

Neighborhood Mobilization: Redevelopment and Response. Jeffrey R. Henig.

The American Urban System: A Geographical Perspective. R. J. Johnston.

Climate, History and the Modern World. Hubert H. Lamb.

Climate and History: Studies in Past Climates and Their Impact on Man. T. M. L. Wigley, M. J. Ingram and G. Farmer.

China: Railways and Agricultural Development, 1875–1935. Ernest P. Liang.

A Desirable Energy Future—A National Perspective. Robert S. Livingston, T. D. Anderson, T. M. Besmann, M. Olszewski, A. M. Perry, and C. D. West.

Topothesia: Essays Presented to T. S. Ó Máille. B. S. Mac Aodha, ed.

Transportation for the Poor: Research in Rural Mobility. Hal S. Maggied.

Land Uses in American Cities. Harold M. Mayer and Charles R. Haves.

Industrial Organisation and Location. Philip McDermott and Michael Taylor.

Human Adaptability: an Introduction to Ecological Anthropology. Emilio F. Moran.

Regional Analysis and the New International Division of Labor. Frank Moulaert and Patricia W. Salinas, eds.

The Nuclear War Atlas. Victoriaville, Quebec, Canada:

Urbanization and Environmental Quality. Isao Orishimo.

The Garden of Eden: The Botanic Garden and the Re-Creation of Paradise. John Prest.

Earthfire, The Eruption of Mount St. Helens. Charles Rosenfeld and Robert Cooke.

Contest for the South China Sea. Marwyn S. Samuels.

The Future of the Wetlands: Assessing Visual-Cultural Values. Richard C. Smardon, ed.

Tucson: the Life and Times of An American City. C. L. Sonnichsen.

The Geography of Multinationals. Michael Taylor and Nigel Thrift, eds.

Impact of Marine Pollution on Society. Virginia Tippie and Dana Kester.

Reviving the Industrial City: the Politics of Urban Renewal in Lyon and Birmingham. Jerry A. Webman.

Andean Reflections: Letters from Carl O. Sauer While on a South American Trip under a Grant from the Rockefeller Foundation, 1942. Robert C. West, ed.

Cartographic Drawing with Computers. P. Yoeli.     

BOOK REVIEWS

Book Reviewed in this article: Main Street: Northeastern Oregon: The Founding and Development of Small Towns . Barbara Ruth Bailey . Food Politics: The Regional Conflict . David N. Balaam and Michael J. Carey , eds. The International Economy and Industrial Development: Trade and Investment in the Third World . R. Ballance , J. Ansari and H. Singer . Neighborhoods in Urban America . Ronald H. Bayor , ed. The English Heartland . By Robert Beckinsale and Monica Beckinsale . Regional Dimensions of Industrial Policy . Michael E. Bell and Paul S. Lande , eds. Tension Areas of the World . D. Gordon Bennett , ed. Latin America: an Introductory Survey . B. W. Blouet and O. M. Blouet , eds. Integration and Division: Geographical Perspectives on the Northern Ireland Problem . Frederick W. Boal and J. Neville H. Douglas , eds. Energy and Land Use . Robert W. Burchell and David Listokin , eds. Slopes and Weathering . Michael Clarke and John Small . Alaska's Rural Development . Peter G. Cornwall and Gerald Mc Beath , eds. The Politics of Park Design: A History of Urban Parks in America . Galen Cranz . World Congress on Land Policy, 1980, Proceedings . Matthew Cullen and Sharon Woolery , eds. Oregon Divided: A Regional Geography . Samuel N. Dicken and Emily F. Dicken . Urban Food Marketing and Third World Rural Development . T. Scarlett Epstein . South Africa: Spatial Frameworks for Development . T. J. D. Fair . Institutions and Geographical Patterns . Robin Flowerdew , ed. Industrialization of U.S. Agriculture, An Interpretive Atlas . Howard F. Gregor . Planning Theory: Prospects for the 1980s . Patsy Healy , Glen Mc Dougall and Michael J. Thomas , eds. Neighborhood Mobilization: Redevelopment and Response . Jeffrey R. Henig . The American Urban System: A Geographical Perspective . R. J. Johnston . Climate, History and the Modern World . Hubert H. Lamb . Climate and History: Studies in Past Climates and Their Impact on Man . T. M. L. Wigley , M. J. Ingram and G. Farmer . China: Railways and Agricultural Development, 1875–1935 . Ernest P. Liang . A Desirable Energy Future—A National Perspective . Robert S. Livingston , T. D. Anderson , T. M. Besmann , M. Olszewski , A. M. Perry , and C. D. West . Topothesia: Essays Presented to T. S. Ó Máille . B. S. Mac Aodha , ed. Transportation for the Poor: Research in Rural Mobility . Hal S. Maggied . Land Uses in American Cities . Harold M. Mayer and Charles R. Haves . Industrial Organisation and Location . Philip Mc Dermott and Michael Taylor . Human Adaptability: an Introduction to Ecological Anthropology . Emilio F. Moran . Regional Analysis and the New International Division of Labor . Frank Moulaert and Patricia W. Salinas , eds. The Nuclear War Atlas. Victoriaville, Quebec, Canada : Urbanization and Environmental Quality . Isao Orishimo . The Garden of Eden: The Botanic Garden and the Re-Creation of Paradise . John Prest . Earthfire, The Eruption of Mount St. Helens . Charles Rosenfeld and Robert Cooke . Contest for the South China Sea . Marwyn S. Samuels . The Future of the Wetlands: Assessing Visual-Cultural Values . Richard C. Smardon , ed. Tucson: the Life and Times of An American City. C. L. Sonnichsen . The Geography of Multinationals . Michael Taylor and Nigel Thrift , eds. Impact of Marine Pollution on Society . Virginia Tippie and Dana Kester . Reviving the Industrial City: the Politics of Urban Renewal in Lyon and Birmingham . Jerry A. Webman . Andean Reflections: Letters from Carl O. Sauer While on a South American Trip under a Grant from the Rockefeller Foundation, 1942 . Robert C. West , ed. Cartographic Drawing with Computers . P. Yoeli .     

The 10th International Symposium on Permafrost Engineering——Challenge and adaption of permafrost engineering to a changing climate

Permafrost engineering has been developing rapidly in recent years. Many projects have been undertaken with the latest technologies and show their importance in supporting regional social and economical development. For example, the Qinghai-Tibet Railway has been a milestone project in permafrost engineering. However, when designing and building infrastructures in cold regions,     

Understandings of Relationships between Agriculture and Biodiversity in Kunisaki GIAHS

<正>1 Characteristics of Kunisaki GIAS and aims of this research Kunisaki GIAHS in the Kunisaki peninsula and Usa area,Oita,Japan,is a system where forestry,agricultural production,and fisheries are sustained by the strong connection between Sawtooth Oak forest,multiple interlinked irriga tion ponds,and Seto Inland Sea(Vafadari 2013a;2013b;Hayashi 2013).This area receive around 1,500 mm of annual precipitation with a     

BOOK REVIEWS

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<正>Dear Readers,Please be informed that being approved by the relevant authority of Chinese government,Journal of Resources and Ecology will change publication frequency from quarterly to bimonthly from 2015,with 64 pages per issue,published at the end of January,March,May,July,September and November.Thank you for your attention.Please don't hesitate to let us know if you have any suggestions and questions about this journal.