Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Earth Science Frontiers》 2002-02
Add to Favorite Get Latest Update

ENVIRONMENT SIGNIFICANCE OF CLAY MINERALS

TANG Yan\|jie 1, JIA Jian\|ye 2,1 , XIE Xian\|de 1 (1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640,China; 2.Guangzhou Institute of Geography, Guangdong Academy of Sciences, Guangzhou 510070,China)  
Because the large quantities of clay minerals are the products of different weathering processes on the Earth's surface, they possess abundant information of environmental changes during the course of sedimentation, burial and transformation, so that they can be the information indicators of environmental changes Hence, the thorough studies on features of clay minerals such as mineral micromorphology, microstructure, granularity distribution, content change and paragenetic associations can recognize and speculate the information of weathering types and climatic conditions in their formation and origins areas so as to reveal global signature of environmental evolution The information of paleoclimatic evolution derived from substantive research of clay minerals has been taken to reconstruct paleoclimate and continental paleoenvironment Clay minerals widely exist in all kinds of sedimentary rock With layer structures, inter\|layer electric charges and chemical bond, they are characterized by unique polarity, high porosity and large surface area Thus, they are capable of absorption, ion exchanging and swelling Based on these properties, clay minerals can serve as very effective sorbent of environmental pollutants As the main part of soil colloid, clay minerals carry some charges and can exchange ion in soil While toxicants permeated through soil, soil colloid may absorb the ions with reverse charges and then some of the ions can be solidified in the composition of clay Therefore, the activity and diffusion of pollutants are limited and the soil with clay minerals makes itself clean up Contrasts to active carbon, most kinds of clay minerals have not only abundant deposits but also low cost of regeneration Altogether, clay minerals will open their vast prospect in the application of environmental pollution control
【Fund】: 广东省科学院优秀青年科技人才基金资助项目
【CateGory Index】: P578
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【References】
Chinese Journal Full-text Database 10 Hits
1 JIANG Fu1,YING Rong-hua2(1.Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 200092,P.R.China;2.Road Engineering Institute,Changsha University of Science and Technology,Hunan,Changsha 410076,P.R.China);Analysis on Loess Viscoelasticity by Laboratory and Field Tests[J];Chinese Journal of Underground Space and Engineering;2008-02
2 CHEN Tao WANG Hejin ZHANG Zuqing WANG Huan (School of Earth and Space Sciences, Peking University, Beijing 100871);An Approach to Paleoclimate-Reconstruction by Clay Minerals[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2005-02
3 TANG Song SHAO Lei ZHAO Quan-hong (Key Laboratory of Marine Geology, Ministy of Education,Tongji University, Shanghai 200092);Characteristics of Clay Mineral in South China Sea since Oligocene and Its Significance[J];Acta Sedimentologica Sinica;2004-02
4 YU Kai-ping 1 HAN Guang-min 2 YANG Feng-li 1 Mansy J L 3 XU Chang-hai 1 ZHOU Zu-yi 1 CHENG Xin-rong 1 LIU Zhi-fei 1FU Qiang 1 1 (Laboratory of Marine Geology, Tongji University,Shanghai 200092) 2(Geological Society of Belgium,1000 Brussels Belgium) 3(Laboratoire de Sèdimentologie et Gèodynamique, UMR 8577 CNRS, Universitè des Sciences et Technologies de Lille,59655 Villeneuve d ,Ascq Cedex, France);Study on Clay Minerals of P/T Boundary in Meishan Section , Changxin , Zhejiang Province[J];Acta Sedimentologica Sinica;2005-01
5 SHI Yu-xin 1,2 DAI Xue-rong2 SONG Zhi-guang1 ZHANG Wei-guo3 WANG Li-qun 2 1(State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou 510640) 2 (Department of Geography, East China Normal University, Shanghai 200062)3(State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062);Characteristics of Clay Mineral Assemblages and Their Spatial Distribution of Chinese Loess in Different Climatic Zones[J];Acta Sedimentologica Sinica;2005-04
6 FENG Qi1 FENG Qing-lai2 YU Ji-shun2 LEI Xin-rong3(1.Faculty of Earth Science,China University of Geosciences,Wuhan 430074;2.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074;3.Faculty of Material Science and Chemical Engineering,China University of Geosciences,Wuhan 430074);Characteristics of Clay Minerals from the Uppermost Permian in Dongpan Section,Guangxi Province and Its Significance[J];Acta Sedimentologica Sinica;2007-03
7 Li Yonghua ① Zhang Xiaoyong ① Cui Zhijiu ② Gao Quanzhou ③ (①Urban and Environment Sciences Institute of Liaoning Normal University, Dalian 116029; ② Urban and Environment Sciences Department of Peking University, Beijing 100871; ③ Earth and Environment Sciences Department of Zhongshan University, Guangzhou 510275 );PERIODIC COUPLING OF DEBRIS FLOW ACTIVE PERIODS AND CLIMATE PERIODS DURING QUATERNARY[J];Quaternary Sciences;2002-04
8 XIONG Zhi-fang~1, GONG Yi-ming~ 1,2 1.The Key Laboratory of Geobiology and Environmental Geology,Ministry of Education;State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences, Wuhan 430074, China 2.Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454003,China;Geochemical characteristics and climatic-environmental significance of the red weathering crusts in the Beidaihe coast, North China[J];Earth Science Frontiers;2006-06
9 WANG Chao-wen~a,HONG Han-lie~a,XIANG Shu-yuan~a,ZHANG Ke-xin~a,b,XIAO Yi~a(a.Faculty of Earth Sciences;b.State Key Laboratory of Geological Processes andMineral Resources,China University of Geosciences,Wuhan 430074,China);Characteristics of Clay Minerals and Their Paleoclimatic Indicator of Early Pleistocene Sediments from Alag Lake,East Kunlun[J];Geological Science and Technology Information;2008-05
10 Gu Jiawei 1 Wang Zhanghua 2 Li Yanhong 1 Duan Lingyun 1 1 Department of Geography,East China Normal University,Shanghai 2000622 State Key Laboratory of Estuarine Coastal Research,East China Normal University,Shanghai 200062;Lithologic and magnetic characteristics and origin of shallow bore sediments on outer continental shelf of East China Sea[J];Journal of Palaeogeography;2006-02
China Proceedings of conference Full-text Database 2 Hits
1 SHEN Mang-ting LIU Hong-ying SU Jing-wen (Nanjing Center,China Geological Survey,Nanjing Institute of Geology and Mineral resources,Nanjing 210016,China);Discussions on geological conditions about the site selection of urban waste landfill[A];[C];2005
2 CHEN Tao, WANG Huan, ZHANG Zu_qing and WANG He_jin (School of Earth and Space Sciences, Peking University, Beijing 100871, China);Clay minerals as indicators of paleoclimate[A];[C];2004
【Citations】
Chinese Journal Full-text Database 10 Hits
1 Yang Xianzhong (Nanjing Institute of Geology and Mineral Resouces, Nanjing. 210016);Illite Crystallinity and Its Geological Significances[J];Acta Sedimentologica Sinica;1993-04
2 Zhu Fengguan (The Second Institute of Oceanography, National Bureau of Oceanography);Clay Minerals of the East China Sea Shelf Area in the Recent Epoch Stratum[J];Donghai Marine Science;1985-04
3 Han Jiamao;Jiang Wenying;Chu Jun(Institute of Geology, Chinese Academy of Sciences, Beijing 100029);GRAIN SIZE DISTRIBUTION OF MAGNETIC MINERALS IN LOESS AND PALEOSOL[J];QUATERNARY SCIENCES;1997-03
4 LU An huai,\ LU Xiao ying,\ REN Zi ping,\ HAN Li rong, FANG Qin fing, HAN Yong(National Lab of Mineral and Rock Materials,China University of Geosciences,Beijing 100083,China);NEW ADVANCES IN ENVIRONMENTAL MINERALOGY OF NATURAL OXIDES AND HYDROXIDES OF IRON AND MANGANESE[J];EARTH SCIENCE FRONTIERS;2000-02
5 ZHOU Ping,\ WANG Xun,\ YAO Li (China University of Geosciences,Beijing 100083,China);THE APPLICATION OF NATURAL MINERAL TO THE TREATMENT OF STRAW-PULP WASTEWATER[J];EARTH SCIENCE FRONTIERS;2000-02
6 WANG Yan\|xin (Department of Environmental Engineering, China University of Geosciences,Wuhan 430074,China);REMOVAL OF HEAVY METALS FROM WASTEWATERS USING LOW COST SORBENTS:APPLICATIONS OF BIOMASS AND GEOMATERIAL TO ENVIRONMENTAL PROTECTION[J];Earth Science Frontiers;2001-02
7 Zhang Naixian 1 Wan Guojiang 2 Ma Yuguang 1 (1.Institute of Geology, Chinese Academy of Scineces, Beijing 100029; 2. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiya;THE CLAY MINERAL AND ITS ENVIRONMENTAL RECORD IN THE SEDIMENT CORE OF CAOHAI, WEINING[J];;2000-02
8 Zhu Lizhong, Wang Qing, Chen Baoliang (Department of Environmental Sciences,Zhejiang University,Hangzhou 310028,China Email:lzzhu@mail.hz.zj.cn);Sorption of Aniline and Phenol to Anioncation Organobentonites from Water[J];CHINESE JOURNAL OF ENVIROMENTAL SCIENCE;2000-04
9 Wang Shiyi (Beijing Normal University, Beijing, China);CLAY MINERALS AND PALEOCLIMATE EVOLUTION IN THE YANGYUAN BASIN, HEBEI PROVINCE[J];Marine Geology & Quaternary Geology;1988-04
10 Shi Yuxin (Institute of Geology,Academia Sinica,Lanzhou,730000,China) Dai Xuerong (Department of Geographical Science,Lanzhou University,Lanzhou,730000,China) Li Jietong (Institute of Geology,Academia Sinica,Lanzhou,730000,China);ORIGIN AND SIGNIFICANCE OF CLAY MINERALS IN THE LAST INTERGLACIAL LOESS IN LANZHOU AREA,NORTH CENTRAL CHINA[J];MARINE GEOLOGY & QUATERNARY GEOLOGY;1997-01
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 YANG Yi-jin,ZHANG Xue-qiao,ZOU Chang-wu (Faculty of Environmental Engineering,Chendu University of lnformation Engineering,Sichuan 610041,China);Application of Minerals in Heavy Metal-bearing Waste Water Treatment[J];Sichuan Nonferrous Metals;2006-01
2 YANG Yi-jin~1 LI Zhi-zhang~2 LIU Jian-ying~1(1.Dept.of Environ.ChengDu University of Information Technology Chengdu 610041;2.Kunming University of Science and Technology Kunming 650093);Application of Minerals in Organic Waste Water Treatment[J];Sichuan Nonferrous Metals;2006-02
3 YANG Ying~(1,2),PENG Shuc-huan~1,LIU Ming-ming~1,PAN Yao~1(1.School of Resources and Environment,Hefei University of Technology, Hefei 23009,China;2.Department of Environmenal Engineering,Anhui Institute of Architecture & Industry,Hefei 230022,China);Adsorption properties and optimum technological conditions of Ponceau 4R on organic pillared interlayer Montmorillonite[J];Journal of Anhui Institute of Architecture & Industry(Natural Science);2006-01
4 XUE Hui-juan et al (Department of Earth Sciences,China University of Geosciences,Wuhan,Hubei 430074);Clay Mineralogy of Sediments in Gyirong Basin,Tibet and Paleoclimatic Significance[J];Journal of Anhui Agricultural Sciences;2008-24
5 CAO Lei(Geography Dept.of Huaiyin Teachers College,Huai'an 223001,China);Researching Progress in Application of Clay Minerals in Environmental Mineralogy[J];Journal of Anqing Teachers College(Natural Science Edition);2005-04
6 WEI Hai-tao1,XIA Dun-sheng2,CHEN Fa-hu1,MA Jian-ying2,WANG Guan1 (1.Key Laboratory of West China's Environmental System(Ministry of Education), Lanzhou University,Lanzhou Gansu 730000,China;2.Key Laboratory of Desert and Desertification,CAREERI,CAS,Lanzhou Gansu 730000,China);Relationship between the Magnetic Susceptibility of Surface Soil and Precipitation of Loess Plateau and Adjacent Area[J];Journal of Glaciology and Geocryology;2008-03
7 Wang Zhiguo Lu Anhuai (Earth and Space Science Academy of Peking University,Beijing 100871,China);Analyzing about the Advantages and Disadvantages of Mineral Method in Treating Heavy Metals Pollution[J];Environmental Science and Management;2007-05
8 CHEN Tao WANG Hejin ZHANG Zuqing WANG Huan (School of Earth and Space Sciences, Peking University, Beijing 100871);An Approach to Paleoclimate-Reconstruction by Clay Minerals[J];Acta Scicentiarum Naturalum Universitis Pekinesis;2005-02
9 WANG Lan-sheng, YANG Li-zheng, WANG Xiao-qun, DUAN Li-ping(College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China);Discovery of huge ancient dammed lake on upstream of Minjiang River in Sichuan, China[J];Journal of Chengdu University of Technology(Science & Technology Edition);2005-01
10 YANG Hong-meiState Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing 100083,China;The palaeolimnological record from Northern Tibet based on trace element chemistry of ostracod shells and the paleoenvironment implication in Tongtianhe basin,Tibet,China[J];Journal of Chengdu University of Technology(Science & Technology Edition);2009-03
China Proceedings of conference Full-text Database 10 Hits
1 ;数字高程模型(DEM)在黄土高原研究中的应用与展望[A];[C];2004
2 ;粘土矿物原料用作环境材料的研究现状及发展趋势[A];[C];2004
3 PAN Hui HE Guang-ping WU Hong-hai (School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China);Application of surfactants in modification of bentonite[A];[C];2007
4 LU An_huai (School of Earth and Space Sciences, Peking University, Beijing 100871, China);Mineralogical photocatalysis in natural self-purification of inorganic minerals[A];[C];2004
5 CHEN Jie 1, LU An_huai 2, ZHAO Jin 1 and HOU Hua_dan 3 (1. School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; 2. School of Earth and Space Sciences, Peking University, Beijing 100871, China; 3. Shanghai Offshore Drilling Corporation, Shanghai 200137, China);Disposal of Hg(Ⅱ)-bearing wastewater by natural limonite[A];[C];2004
6 YANG Xin 1, LU An_huai 2, LI Gai_yun 1, LI Qiao_rong 1, GAO Xiang 3 and REN Zi_ping 4 (1. China University of Geosciences, Beijing 100083, China; 2. School of Earth and Space Sciences, Peking University, Beijing 100871, China; 3. College of Beijing City, Beijing 100083, China; 4. Research Center for Eco_Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China);Oxidative decolorization of printing and dyeing wastewater by natural cryptomelane[A];[C];2004
7 XUE Chuan_dong 1,2 , YANG Hao 1 and LIU Xing 2 (1. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China; 2. Department of Earth Science, Kunming University of Science and Technology, Kunming 650093, China);An experimental application of natural mineral materials to the remedy of the eutrophic water[A];[C];2004
8 LI Xue_jun 1,WANG Li_juan 2,LU An_huai 2 and WANG Chang_qiu 2 (1. Faculty of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China; 2. School of Earth and Space Science, Peking University, Beijing 100871,China);A discussion on activation mechanism of atom groups in serpentine[A];[C];2004
9 Li Xuejie Wang Pinxian Xu Caizhen Xu Yuanai Guangzhou Marine Geological Survey, Guangzhou 510760 State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092;Clay Minerals in Surface Sediments in Western South Sea: Distribution and their Provenance[A];[C];2006
10 LIU Li-zhang~2, MA Shao-jian~1, QIAO Hong-guang~1(1. Institute of Resource and Enviro nment, Guangxi University, Nanning 530004, China;2. Institute of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China);Present Situations and Prospects of Application of Enviro nmental Mineral Materials in Enviro nment Protection[A];[C];2004
【Secondary References】
Chinese Journal Full-text Database 10 Hits
1 HE Gang,LI Shuang-ying(School of Natural Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,China);GLOBAL PALAEOCLIMATE CHARACTERISTICS AND RESEARCH TECHNIQUE OF LATE PALAEOZOIC[J];Geology of Anhui;2006-04
2 GUAN Hou-chun1,LI Yun-huai1,YANG Xi-fei2(1.Anhui Institte of Geological Survey,Hefei 230001,Anhui,China;2.School of Natural Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,Anhui,China);ADVANCES IN STUDY ON THE INDICATORS OF PALAEOCLIMATIC AND PALAEOENVIRONMENTAL EVOLVEMENT IN THE PAST 2.5MA[J];Geology of Anhui;2008-01
3 XUE Hui-juan et al (Department of Earth Sciences,China University of Geosciences,Wuhan,Hubei 430074);Clay Mineralogy of Sediments in Gyirong Basin,Tibet and Paleoclimatic Significance[J];Journal of Anhui Agricultural Sciences;2008-24
4 WANG Zhi-wen,PAN Bao-zhiCollege of GeoExploration Science and Technology,Jilin University,Changchun 130026,China;Geophysical Logging and Global Climate Change Research[J];Journal of Jilin University(Earth Science Edition);2008-S1
5 HUANG Fan1,HAO Li-bo1,LU Ji-long1,SUN Shu-mei2,WANG Da-yong1,LIU Zi-feng2,BAI Rong-jie21.College of GeoExploration Science and Technology,Jilin University,Changchun 130026,China2.Jilin Geological Survey Institute,Changchun 130061,China;Application of Soil Oxide Data in Eco-Geochemical Evaluation[J];Journal of Jilin University(Earth Science Edition);2008-S1
6 HE Zhi-ping SHAO Long-yi LIU Yong-fu LIU Wen-lin ZHANG Peng-fei (Key Laboratory of Coal Resources of Chinese Ministry of Education and the Department of Resources and Earth Sciences, China University of Mining and Technology, Beijing 100083);Evolution of the Paleoclimates during Permo-Carboniferous in the Southern Hebei[J];Acta Sedimentologica Sinica;2005-03
7 XIONG Ying-qian~(1,2)LIU Zhen-xia~(1)DU De-wen~(1)YU Hua~(1,2)LI Shuang-lin~(3)(1.Ocean University of China,Qingdao,Shandong 266003;2.First Institute of Oceanography,SOA,Qingdao,Shandong266061;3.Qingdao lnstitute of Marine Geology,Qingdao,Shandong 266071);Variation and Its Implication of Major and Trace Elements of EA01 from the Continental Shelf of the East China Sea[J];Acta Sedimentologica Sinica;2006-03
8 FENG Qi1 FENG Qing-lai2 YU Ji-shun2 LEI Xin-rong3(1.Faculty of Earth Science,China University of Geosciences,Wuhan 430074;2.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074;3.Faculty of Material Science and Chemical Engineering,China University of Geosciences,Wuhan 430074);Characteristics of Clay Minerals from the Uppermost Permian in Dongpan Section,Guangxi Province and Its Significance[J];Acta Sedimentologica Sinica;2007-03
9 SHAO Lei1 PANG Xiong2 QIAO Pei-jun1 CHEN Chang-min2 LI Qian-yu1 MIAO Wei-liang1(1.State Key Laboratory of Marine Geology,Tongji University,Shanghai 200092;2.Shenzhen Ltd CNOOC,Guangzhou 510240);Sedimentary Filling of the Pearl River Mouth Basin and Its Response to the Evolution of the Pearl River[J];Acta Sedimentologica Sinica;2008-02
10 YIN Hairong~1,WU Lihua,CHEN Fu~1,MA Liang~2,QI Fengyuan~2(1 School of Material Science and Engineering ShaanXi University of Science and Technology, Xianyang 712081; 2 Qinhuangdao Glass Industry Research Design Institute,Qinhuangdao 066004; 3 Xianyang Research & Design Institute of Non-Metallic Minerals, Xianyang 712021);Research and Application of Nanokaolin[J];Materials Review;2006-S1
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 ;Significance and Research on the Two Boreholes of Tianshuihai in the West Kulun Mountains[J];Journal of Glaciology and Geocryology;1991-02
2 Xu Chang ( Qinghai Institute of Salt Lake, Academia Sinica );PRELIMINARY STUDY ON CLAY MINERALS AND THEIR SIGNIFICANCE IN SEDIMENT PROFILE OF SOME SALT LAKES IN QAIDAM BASIN[J];Acta Sedimentologica Sinica;1983-03
3 Wang Shiyi ( Geography Department of Beijing Normal University );GEOLOGICAL SIGNIFICANCE OF ILLITE OPENING INDEX[J];Acta Sedimentologica Sinica;1987-01
4 Yang Xianzhong (Nanjing Institute of Geology and Mineral Resouces, Nanjing. 210016);Illite Crystallinity and Its Geological Significances[J];Acta Sedimentologica Sinica;1993-04
5 Li Jinggui; Fan Pu; Cui Mingzhong(Lanzhou Institute of Geology, Academia Sinica, Lanzhou, 730000)R. P.Philp, J. Allen(School of Geology and Geophysics, University of Oklahoma, Norman,OK, 73019, U. S. A. );Long-Chain Unsaturated Ketones In Qinghai Lake Sediments[J];ACTA SEDIMENTOLOGICA SINICA;1995-01
6 Zhu Fengguan (The Second Institute of Oceanography, National Bureau of Oceanography);Clay Minerals of the East China Sea Shelf Area in the Recent Epoch Stratum[J];Donghai Marine Science;1985-04
7 Wu Jinglu (Nanjing Institute of Geography and Limnology, Academia Sinica, Nanjing, 210008);CHARACTERS OF THE EVOLUTION OF CLIMATE ANDENVIRONMENT DURING THE LAST 10ka YEARSIN AIBI LAKE BASIN, XINJIANG[J];Scientia Geographica Sinica;1995-01
8 Liu Shangren (Department of Geography, Zhongshan University, Guangzhou 510275);SAND BARRIER OF LATE PLEISTOCENE EPOCH ALONG GUANGDONG GOAST[J];Scientia Geographica Sinica;1995-03
9 Zhang Hunan (Guangdong Bureu of Seismology);THE FAULT DELTA[J];Acta Geographica Sinica;1980-01
10 Huang Zhenguo; Zhang Weigiang; Chai Fuxiang(Guangzhou lnstitute of Geography. Guangzhou 510070)Xu Qihao(Seismological Bureau of Guangdong Province. Guangzhou 510070);ON THE LOWEST SEA LEVEL DURING THE CULMINATION OF THE LATEST GLACIAL PERIOD IN SOUTH CHINA[J];ACTA GEOGRAPHICA SINICA;1995-05
China Proceedings of conference Full-text Database 1 Hits
1 Li Yuanfan Zhang Qingsong and Li BingyuanInstitute of Geography ,Chinese Academy of Sciences,Beijing 100101;OSTRACOD FAUNA AND ENVIRONMENTAL CHANGES SINCE LATE PLEISTOCENE IN THE WESTERN QINGHAI-XIZANG PLATEAU[A];[C];1994
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved