基于RUSLE的卧虎山水库流域土壤侵蚀特征分析

通过RUSLE模型对卧虎山水库流域土壤侵蚀进行全面评价验证和总结。结果表明：① 水库流域平均侵蚀模数为462 t/(km²·a),该数值与通过水库淤积等资料推算评估结果基本一致,表明本研究结果具有较高的可信度;水库流域年均侵蚀量达到2.6×10⁶t,其中高于容许土壤流失量的面积为176 km²,占到流域总面积的31.51%。从不同侵蚀级别来看,占流域面积27.77%的轻度侵蚀,对流域侵蚀总量的贡献率为54.64%; 面积占比3.74%的中度及以上侵蚀,侵蚀量贡献率达到30.94%。② 流域内土壤侵蚀空间差异较大,回归分析发现地形因子是导致各子流域土壤侵蚀模数差异的主要因素;就土地利用类型而言,旱地和农村居民点是流域内的主要侵蚀土地利用类型;流域内土壤侵蚀模数随着坡度增加呈现相应增大趋势,8°~25°坡度段面积比例不仅最大,而且侵蚀量占比最高,是水库流域的主要侵蚀坡度段。     

基于RS的岷江流域土壤侵蚀变化及其驱动力分析

依据1995年、2000年土壤侵蚀遥感数据并结合2005年实地调查资料,研究岷江流域土壤侵蚀演变规律及其驱动力。研究结果表明:1)2000年岷江流域土壤侵蚀面积为19 907.7 km2(比1995年减少369.6 km2),占流域面积的43.77%,土壤侵蚀量为8 943.26万t,平均侵蚀模数1 966 t/(km2.a),以水蚀和中度侵蚀为主。2)选择降雨变化、土地利用变化、植被覆盖度变化3个自然因素和人口密度、万元GDP(作为经济发展指标)2个社会发展指标作为研究区土壤侵蚀变化的驱动因素。结果表明:2000年降雨侵蚀力对土壤侵蚀的影响是1995年的71%;森林覆盖率每增加1%,土壤侵蚀模数减少0.4%~7%,平均减少53 t/(km2.a);林地、草地面积之和与土壤侵蚀面积呈明显的线性相关,旱地面积与土壤侵蚀面积呈二次函数关系;土壤侵蚀面积、土壤侵蚀量与万元GDP呈指数关系;单位人口密度和县域土壤侵蚀面积与土壤侵蚀量均呈幂指数关系。     

20世纪末中国土壤侵蚀的空间分布特征

通过对中国2000年第二次土壤侵蚀遥感调查成果的分析,讨论了20世纪末中国土壤侵蚀空间分布特点。结果表明,水土流失仍然是我国持续影响面最大的环境问题。西部是我国土壤侵蚀的主要分布地区,轻度侵蚀对整个土壤侵蚀格局影响最大。水蚀的分布明显体现出地形的影响,轻度水蚀基本上分布在山地丘陵区 (含黄土地形区),严重水蚀近半分布在黄土地形区。轻度水蚀主要分布在耕地、林地、草地。严重水蚀、轻度风蚀面积均约半数分布在草地,各类草地的保护与整治均应是水、风蚀区水土保持的重要内容。土壤资源中,黄绵土是受到土壤侵蚀威胁最严重的类型。但对我国土壤侵蚀的进一步分析还需要更多对方法和相关数据分析的研究工作。     

定西地区1995-2000年间土壤侵蚀的变化与治理对策

严重的土壤侵蚀是定西地区生态环境恶化的主要原因,也是社会经济发展的主要限制性因素之一。利用数字遥感影像人机交互解译技术对1995年和2000年的土壤侵蚀进行调查,结果显示5 a来定西地区土壤侵蚀面积减少1 446.39 km²,减少了7.36%。其中轻度侵蚀减少5.63%,中度减少1.4%,强度减少0.03%,极强度减少0.30%。侵蚀程度整体上有所减轻,表明水土保持工作取得了一定成效。但土壤侵蚀面积仍然占土地总面积的80%以上,而且强度和极强度侵蚀面积减少不明显,土壤侵蚀仍然十分严重,水土保持的任务还相当艰巨。积极开展水土保持是定西地区实现山川秀美、脱贫致富和可持续发展的根本途径。     

基于遥感和137Cs方法的半干旱草原区土壤侵蚀量估算

结合遥感地学分析方法和地球化学放射性同位素——137Cs示踪技术对青藏高原东北部共和盆地塔拉滩草原地区的土壤风蚀量进行估算。利用遥感数据获取研究区土壤侵蚀强度相对等级图斑,在不同等级侵蚀空间信息中选取137Cs样品采集点,并测定土壤样品中的137Cs含量,以此确定不同等级侵蚀类型的土壤侵蚀量。结果表明,在本研究区发生的风力侵蚀强度不大,主要属于微度侵蚀和轻度侵蚀类型,分别占研究区总面积的47.12%和35.58%,二者占研究区总面积的82.70%,侵蚀模数介于220.28~580.13 t·km-2·a-1之间;只有极小区域发生了强烈以上侵蚀,面积为22.14 km2。在本区还发生强烈的堆积过程,出现大面积的风沙堆积区域,面积约322.67 km2,占研究区总面积的11.78%。本区年均土壤总侵蚀量约为87~115万t,总堆积量约为55~78万t,平均每年由塔拉滩向龙羊峡水库输入的土壤量约为32~37万t。此方法可以对干旱环境中土壤风力侵蚀进行快速的较为客观的估算,具有一定的应用前景。     

对研制云南山地水土流失动态监测系统的初步尝试

采用基于3S技术的定量遥感方法，对1998年和1999年金沙江一级支流龙川江上游小流域进行了水土流失动态监测和防治决策分析。结果表明，1999年为涝年，侵蚀总量高达869008.97t，强度及其以上侵蚀级别的侵蚀量占总量的86．39％，侵蚀模数平均为7703.87t/km^2。1998年为旱年，流失情况较1999年的轻微。1999年中度及其以上侵蚀级别的侵蚀面积占流失总面积的32．41％，而1998年只占26．09％。1999年需要治理和急需治理的面积占侵蚀总面积的15．45％和0．82％，而998年的治理面积较低。本研究采用的技术在国内具有先进性和快速，准确，经济等优点，在云南山地有广阔的运用推广前景。     

基于RUSLE和地理探测器的鄂西北土壤侵蚀时空分异与归因

揭示鄂西北土壤侵蚀时空分异特征及成因可为该区域的水土保持工作提供借鉴。基于RUSLE模型定量分析2005—2020年鄂西北土壤侵蚀时空分异特征,利用地理探测器进行土壤侵蚀时空格局的主导因素和多因子间度量交互耦合程度的定量归因研究。结果表明：1)鄂西北2005—2020年土壤侵蚀强度整体持续下降,15年间平均土壤侵蚀模数下降了16.3 t/(km²·a);整体以微度和轻度侵蚀为主(占总侵蚀面积的93%)。2)不同坡度下土壤侵蚀强度不同,8°～25°地区以中度、强烈和极强烈侵蚀为主(侵蚀占比为55.4%);>25°地区,65.6%的面积受到强烈及以上等级的高强度侵蚀。3)坡度和主要土地利用类型是土壤侵蚀的主导因子,二者共同作用对土壤侵蚀的解释力(q=0.479)均优于单因子。4)坡度>35°、高程在500～800 m、年降雨侵蚀力在4 950.55～6 378.09 MJ·mm/(hm²·h·a)且以耕地为主要土地利用类型的区域均被识别为高风险侵蚀区。     

基于GIS纸坊沟小流域土壤侵蚀强度空间分布

给出水蚀预报模型各因子计算方法,利用GIS空间数据提取和运算,结合水力侵蚀强度分级,获取流域土壤侵蚀强度空间分布特征.结果表明,流域实际土壤侵蚀强度分布特征是流域沟头侵蚀面积大,侵蚀强度高于沟口,且极易发生极强烈和剧烈侵蚀;流域中部以轻度和中度侵蚀为主,同时左岸侵蚀强度明显强于右岸.流域强烈侵蚀区位于苦荞沟、拐沟、大范家沟、大罗锅沟、正沟,年均侵蚀模数23 000～33 000 L/(km2·a);浅沟侵蚀是造成沟间地剧烈土壤侵蚀发生的主要原因,流域土壤侵蚀强度空间分布受地面植被覆盖和坡度制约.     

宁南县水土流失及其治理

1987年本县轻度以上水土流失面积920平方公里,占全县土地面积的55.0％。县内土壤流失量327万吨/年,土壤侵蚀模数3554吨/平方公里×年。本县水土流失呈西北-东南向带状分布,由低处(沟边)向高处(岭脊)减弱,以轻度、中度水土流失为主(面积814平方公里)。采取的治理措施有:坡地改梯田,水平带状耕作,植树种草,封山育林,蓄水拦沙等。     

小中甸河流域土壤保持功能及空间分布特征分析

基于修正通用土壤流失模型(RUSLE)和GIS空间技术,对小中甸河流域土壤侵蚀强度及各生态系统土壤保持功能进行定量研究,探讨了土壤侵蚀强度与土地利用方式的关系、生态系统土壤保持能力的差异性及其空间分布特征。研究得出:(1)小中甸河流域以微度、轻度侵蚀为主,严重侵蚀主要集中在流域东部及南部;(2)灌草地及裸地是极易发生中度及以上等级侵蚀的地类;(3)不同类型生态系统土壤保持量依次为:森林草地裸地人居地;(4)平均单位面积的土壤保持量依次为:人居地森林草地;(5)森林生态系统内部,阔叶林土壤保持能力高于针叶林,研究表明该地区生态系统土壤保持能力与植被盖度呈正相关关系,土壤侵蚀受人为扰动影响较低;(6)空间自相关分析表明小中甸河流域土壤保持强度在空间上显著集聚,土壤保持热点区域主要集中在中下游河段,土壤保持水平总体表现良好。     

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.