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Land Use of the Three Gorges Reservoir Area and the Effect on Its Landscape Pattern in the Recent 5. Years

Wuhan university Journal of Natural Sciences 2006年第4期11卷 910-914页

作者： HUANG Zhiqin 1,2,3 , ZHOU Wancun 1 ,ZHOU Jieming 4 , ZHU Mingcang 3,5.1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences , chengdu 610041, sichuan, china 2. Graduate university of Chinese Academy of Sciences, Beijing 100049, china 3. sichuan Institute of Land Resource Management, chengdu 610041, sichuan , china 4. Department of Resources and Environment Science, sichuan Normal university , chengdu 610061, sichuan, china 5. College of {14. {15., chengdu university of technology, chengdu 610059, sichuan, china Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu Sichuan China Graduate university of Chinese Academy of Sciences Beijing China sichuan Institute of Land Resource Management Chengdu Sichuan China Department of Resources and Environment Science Sichuan Normal University Chengdu Sichuan China College of information engineering Chengdu University of Technology Chengdu Sichuan China

The paper makes detailed analysis on the changing processes of the main types of land use in Three Gorges Reservoir Area through the techniques of RS （Remote Sense） and GIS （Geography information System）. Based on the theory of landscape ecology, many types of landscape pattern indexes are calculated and made correlation analysis. The results indicate that： in 1995.the ecological environment of Three Gorges Reservoir Area was the most vulnerable in the recent 5. years, but resumed in 2002; the landscape pattern diversity index, fractal dimension index and fragmentation index has close correlation with the area of land use/cover change （LUCC）. The research also releases that the increase of the cultivated land, grassland and construction land deteriorates the landscape ecological pattern, while the increase of forest land area will help restore the landscape ecological pattern to its original state. The rapid change of grassland is an important index of the change of landscape pattern, because it has the most effect on change of landscape pattern index.

关键词： the Three Gorges Reservoir Area land use/cover change landscape pattern.

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CHARACTERISTICS OF ALKALINE VOLCANIC ROCKS OF PLIOCENE IN THE WESTERN PART OF HONGHE FAULT ZONE

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地学前缘 2000年第S1期7卷 270-271页

作者： Wang Guozhi,Huang Yongjian,Ma Renze,Wang Chengshan [WT5.5.BX](chengdu university of technology,chengdu 610059,{5.)

A set of pull\|apart basins were formed along the Weixi—Qiaohou right\|lateral slip shear zone of the western part of Honghe fault zone during the period from Miocene to Quaternary.A rock suite of alkaline basalt\|trachyte\|leucite phonolite is distributed in the Pliocene basin developed in the middle and northern parts of the fault. The location of these rocks and the features of the basin indicate the close relationship between the rock suite and the strike\|slipping.. The sedimentological and chronological evidences prove that Dianxi plateau uplifted quickly in the Pliocene. We can get the information about the plutonic process of the uplift of the plateau from this alkaline rock association. There are mainly olivine\|pyroxene\|trachyandesite and biotite\|trachyte in the rock association. The rocks are often of porphyritic texture and block or semi\|directional flowage structure while the matrix is of trachytic or microcrystalline texture. The phanerocrysts are diopsidic augite, rimpylite, biotite and perthite (olivine sometimes can be seen). The matrix are made up of alkaline feldspar microcrystalline (30%～5.%), short\|grained diopside (10%～15.), light\|colored volcanic glass (0～15.) and some magnetite, while feldspar microcrystalline in some rocks are arranged directionally. And there are sharp\|edged or round pyroxenite enclaves and hemicrystalline of short grained sinaite, biotite sinaite and felsic breccia in the trachyte, with good demarcation line. The pyroxenite enclaves in the trachyte are of different size, and the size of the biggest ones are 10cm or so with the characteristic of plastic yield flowing. Sinaite hemicrystalline may come from the older intrusions of Pliocene and Eocene epoch.

关键词： Honghe fault zone Pliocene trachyte strike\|slip uplift

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THE PALEOCURRENT PATTERN OF EARLY TERTIARY REDBEDS IN THE HOH XIL BASIN,NORTHERN TIBET PLATEAU:IMPLICATIONS FOR AN EARLY UPLIFT AND UNROOFING

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地学前缘 2000年第S1期7卷 198-199页

作者： Yi Haisheng, Wang Chengshan,Lin Jinhui, Zhu Lidong, Liu Dengzhong, Huang Jijun[WT5.5.BX](chengdu university of technology,chengdu 610059,{5.)

We focus on early Cenozoic uplift, erosion and growth of northern Tibet plateau by reconstructing paleo\|drainage pattern in the Hoh Xil basin. Stratigraphical infilling sequences and lithic type orogenic basins are determined largely by contemporaneous tectonic activity. It is therefore reasonable to infer that paleoflow variability record give useful information about regional tectonic events. We now report paleocurrent data from outcrop measurement of 4 expedition profiles across the basin during 1997—*** west\|east trending Hoh Xil basin is the largest redbeds basin in northern Tibet plateau. It is 400km in axial length and has maximum width of 200km, which extends along Jin zone, separated the Qiangtang from the Bayankara block. It accommodates more than 5.00m of terrestrial sediments during the Eocene to Oligocene dated by preliminary magnetostratigraphy and minor *** sedimentological observation and lithic facies associations analysis of the Eocene Fenghuoshan Group show to have evolved vertically from alluvial fan system in the lowest part, into stacked megasequences of coarsening\|upward fan\|delta system in the middle and upper part. The braided fluvial conglomeratic deposits occur at intervals along the basin margin and grade basin ward interbedded sandstone and mudstone. The Oligocene Yaxicuo Group is locally present and forms as laterally elongate sub\|basins, which is of a maximum thickness of 2000m, as seen in the Wudaoliang and the Hantaishan area. Alluvial fan associations in this sub\|basin in the proximal part adjacent to the southern faulted border and prograded northward to floodplain in distal part.

关键词： paleocurrent pattern early Tertiary redbeds uplift e rosion Hoh Xil Northern Tibet

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Analysis of Earthquake-Triggered Failure Mechanisms of Slopes and Sliding Surfaces

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Journal of Mountain Science 2010年第3期7卷 282-290页

作者： WANG Jian YAO Lingkan Arshad Hussain School of Civil engineering Southwest Jiaotong University Chengdu 610031 China MOE Key Laboratory of High-speed Railway engineering Southwest Jiaotong University Chengdu 610031 China Road and Railway engineering Research Institute Sichuan Key Laboratory of Aseismic Engineering and Technology Chengdu 610031 China National university of Sciences and technology (NUST) Islamabad 44000 Pakistan

Earthquake-induced landslides along the Dujiangyan-Yingxiu highway after the Ms 8.0 Wenchuan earthquake in 2008 were investigated. It was found that：（1） slopes were shattered and damaged during the earthquake and open tension cracks formed on the tops of the slopes; （2） the upper parts of slopes collapsed and slid, while the lower parts remained basically intact, indicating that the upper parts of slopes would be damaged more heavily than the lower parts during an earthquake. Large-scale shaking table model tests were conducted to study failure behavior of slopes under the Wenchuan seismic wave, which reproduced the process of deformation and failure of slopes. Tension cracks emerged at the top and upper part of model, while the bottom of the model remained intact, consistent with field investigations. Depth of the tension crack at the top of model is 32 cm, i.e., 3.2 m compared to the prototype natural slope with a height of 14.m when the length scale ratio （proto/model） is lo. Acceleration at the top of the slope was almost twice as large as that at the toe when the measured accelerations on shaking table are 4.85.m/s2 and 6.49 m/s2, which means that seismic force at the top of the slope is twice the magnitude of that at the toe. By use of the dynamic-strength-reduction method, numerical simulation was conducted to explore the process and mechanism of formation of the sliding surface, with other quantified information. The earthquake-induced failure surfaces commonly consist of tension cracks and shear zones. Within 5.mfrom the top of the slope, the dynamic sliding surface will be about 1 m shallower than the pseudo-static sliding surface in a horizontal direction when the peak ground acceleration （PGA） is 1 m/s2; the dynamic sliding surface will be about 2 m deeper than the pseudo-static sliding surface in a horizontal direction when the PGA is lo m/sL and the depths of the dynamic sliding surface and the pseudo-static sliding surface will be almost the sam

关键词： Subgrade engineering slope failuremechanism shaking table model test: seismicsliding surface Wenchuan earthquake

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惰性气体输运性质的理论计算

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物理学报 2002年第3期51卷 497-500页

作者：郭建军四川工业学院电子信息与电气工程系成都610039

利用惰性气体原子间相互作用势 ,系统计算了 5.惰性气体的输运系数 ,包括第二维里系数B、扩散系数D、热传导系数λ、黏滞系数 η和热扩散因子αT 的计算 .从输运性质的计算证明了Tang Toennies势模型的准确性 .

关键词：惰性气体 Tang-Toennies势模型输运系数理论计算输运性质扩散系数

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Investigation on the 773 K isothermal section of La-Fe-Sn ternary systems by X-ray powder diffraction

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Rare Metals 2010年第6期29卷 567-571页

作者： CHEN Xiang ZHUANG Yinghong CHEN Yungui Key Laboratory of Nonferrous Metal and New Processing technology of Materials (Ministry of Education of china) Guangxi University Nanning 530004 China Department of Physics and Electronic information engineering Neijiang Teachers College Neijiang 641002 China Department of Metallic Materials engineering Sichuan University Chengdu 610065 China

The 773 K isothermal section of the La-Fe-Sn ternary system was investigated and constructed by X-ray powder diffraction（XRD）.The existence of two reported ternary intermetallic compounds,La6Fe13Sn and La3FeSn6,is confirmed in this *** with other R-Fe-Sn phase diagrams（R = Pr and Sm）,the binary alloys Fe3Sn and Fe5.n3 are not *** compound Fe3Sn2 was observed from the XRD pattern of Fe3Sn2 samples,but it is not an equilibrium phase at 773 K and decomposes into Fe and FeSn phases completely for a longer heat treated *** to now,the crystal structure data of La2Sn3 has not been reported,so the X-ray pattern of La2Sn3 was only *** phase relationship for this compound was drawn by a dotted line.

关键词： intermetallics quenching phase diagrams X-ray diffraction.

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Multiparty simultaneous quantum identity authentication with secret sharing

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Science china(Physics,Mechanics & Astronomy) 2008年第3期51卷 321-327页

作者： YANG YuGuang1,2,WEN QiaoYan3 & ZHANG Xing4,5.1 College of Computer Science and technology,Beijing university of technology,Beijing 100022,china 2 State Key Laboratory of information Security (Graduate university of the Chinese Academy of Sciences),Beijing 100049,china 3 School of Science,Beijing university of Posts and Telecommunications,Beijing 100876,china 4 Institute of Electronic technology,information engineering university,Zhengzhou 45.004,china 5.Trusted Computing Laboratory,Beijing university of technology,Beijing 100022,china College of Computer Science and technology Beijing University of Technology Beijing China State Key Laboratory of information Security (Graduate university of the Chinese Academy of Sciences) Beijing China School of Science Beijing University of Posts and Telecommunications Beijing China Institute of Electronic technology Information Engineering University Zhengzhou China Trusted Computing Laboratory Beijing University of Technology Beijing China

Two multiparty simultaneous quantum identity authentication (MSQIA) protocols based on secret sharing are presented. All the users can be authenticated by a trusted third party (TTP) simultaneously. In the first protocol,the TTP shares a random key K with all the users using quantum secret sharing. The ith share acts as the authentication key of the ith user. When it is necessary to perform MSQIA,the TTP generates a random number R secretly and sends a sequence of single photons encoded with K and R to all the users. According to his share,each user performs the corresponding unitary operations on the single photon sequence sequentially. At last,the TTP can judge whether the impersonator exists. The sec-ond protocol is a modified version with a circular structure. The two protocols can be efficiently used for MSQIA in a network. They are feasible with current technol-ogy.

关键词： quantum identity authentication secret sharing quantum cryptography

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The application of geographic information technology to coastal geomorphology

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Acta Oceanologica Sinica 2009年第5期28卷 49-57页

作者： GUO Wei LI Shuheng ZHU Dakui School of Human Settlements and Civil engineering Xi＇an Jiaotong University Xi＇an 710049 China Department of Computer Sciences Xi＇an Jiaotong University Xi＇an 710049 China Department of Urban and Resources Sciences Northwest University Xi＇an 710032 China Faculty of Environmental Sciences University of Waterloo Waterloo N2L3G1 Canada Key Laboratory of Coast ＆ Island Development of Ministry of Education Nanjing University Nanjing 210093 China

With the development of modern oceanic observation technologies, coastal survey data have been experiencing a substantial growth. The integration management of the data from different disciplines, different sources and different formats has become a major research field in coastal geomorphology by using Geographic information System （GIS）. This paper puts forward a new methodology framework of GIS techniques in coastal ocean geomorphology, including data acquisition, process, analysis, and representation. It focuses on some major GIS techniques to study the land-ocean interaction mechanism, such as spatial analysis, submarine topography model and three-dimension （3D） visualization, and apply its result to coastal urban planning, harbor site selection and geomorphology environment about coral reef and islands on the continental shelf. The case studies cover the whole coastal ocean to serve the social community, economical development and diplomatic rights for decision-making all round in the coastal zone. The research shows clearly that the application of coastal multi-source geospatial platform has changed the traditional coastal geomorphology science dramatically from its research scope, fields and methods, however, as made clear in this paper, extracting accurate information from remote sensing data and GIS databases for coastal geomorphological applications is a nontrivial challenge that requires the combined knowledge and skills of information scientists and geomorphologists.

关键词： coastal geomorphology geographic information system (GIS) spatial analysis threedimensional visualization

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小波包对叠前地震面波的分离与信号重建

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石油地球物理勘探 2002年第5期37卷 460-462,472页

作者：王振国周熙襄钟本善成都理工大学

王振国 ,周熙襄 ,钟本善 .小波包对叠前地震面波的分离与信号重建 .石油地球物理勘探 ,2 0 0 2 ,37(5.) :4 6 0～ 4 6 2 ,4 72　　面波在地震勘探中是一种很强的干扰波 ,一般的处理方法有 :一维滤波、F - K滤波、τ- p变换等 ,但这些方... 详细信息

王振国 ,周熙襄 ,钟本善 .小波包对叠前地震面波的分离与信号重建 .石油地球物理勘探 ,2 0 0 2 ,37(5.) :4 6 0～ 4 6 2 ,4 72　　面波在地震勘探中是一种很强的干扰波 ,一般的处理方法有 :一维滤波、F - K滤波、τ- p变换等 ,但这些方法都侧重于考虑某一方面的单一特性或某种条件假设 ,因而具有一定的局限性。小波包变换是一种时频分析的方法 ,它能够对地震资料进行时频精细划分 ,并且可以分离出面波 ,然后经过小波包重构 ,可有效地剔除面波。小波包变换是一种十分有效的去噪方法。

关键词：小波包叠前地震面波分离信号重建地震勘探时频分析小波函数正交分解

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Constructing quantum error correcting code via logic function

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Science china(information Sciences) 2010年第3期53卷 515-523页

作者： ZHONG ShuQin, MA Zhi & XU YaJie Zhengzhou Institute of information engineering, university of information engineering of{5., Zhengzhou 45.002,{5. Zhengzhou Institute of information engineering University of Information Engineering of China Zhengzhou China

We present a systematic way to construct p-ary quantum error correcting codes using logic functions. As a consequence, for a given function with APC distance d′ 2, we can construct quantum codes with parameters ((n, K, d))p and gain a lower bound of K for all 2 d d′. The basic states of the constructed quantum codes can be stated and the sufficient conditions for saturating quantum Singleton bound are also discussed. We give quantum codes [[5. 1, 3]]p with p prime, [[6, 0, 4]], [[6, 2, 3]]p with p > 2 prime and [[2n, 2n - 2, 2]] as examples constructed in this way.

关键词： quantum error-correcting code logic states APC distance

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