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Land Use of the Three Gorges Reservoir Area and the Effect on Its Landscape Pattern in the Recent 50 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 61004., Sichuan, {2. 2. Graduate University of Chinese Academy of Sciences, Beijing 10004., {2. 3. Sichuan Institute of Land Resource Management, Chengdu 61004., Sichuan , {2. 4. department of Resources and Environment Science, Sichuan {4. University , Chengdu 610061, Sichuan, {2. 5. College of Information Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, {2. 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 50 years, but resumed in 2.02. 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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陕鄂边界古长城考实

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陕西师范大学学报(哲学社会科学版) 2000年第2期29卷 102-107页

作者：艾冲陕西师范大学历史系!陕西西安710062

陕鄂边界古长城的建筑时代、历史背景与地理分布长期不明。通过分析各种历史文献记载，结合实地调查资料，对这道古长城的走向、形制和建筑方法作了探讨，断定其营造年代是清朝嘉庆五年（公元１８００年），同时阐明长城线上诸关隘的具... 详细信息

陕鄂边界古长城的建筑时代、历史背景与地理分布长期不明。通过分析各种历史文献记载，结合实地调查资料，对这道古长城的走向、形制和建筑方法作了探讨，断定其营造年代是清朝嘉庆五年（公元１８００年），同时阐明长城线上诸关隘的具体位置。上述问题的澄清对于研究长城史学和陕西历史军事地理均具重要的现实意义。

关键词：陕鄂边界古长城清代长城陆有仁白莲教

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Triboelectric nanogenerator integrated with a simple controlled switch for regularized water wave energy harvesting

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Nano Research 2024年第8期17卷 7585-7592页

作者： Hongbo Yang xi Liang Junwu Kan Zhong Lin Wang Tao Jiang Zhanyong Hong College of Engineering Zhejiang Normal UniversityJinhua 321004China Beijing Key Laboratory of Micro-Nano Energy and Sensor Center for High-Entropy Energy and SystemsBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China The Beijing Key Laboratory for Nano-Photonics and Nano-Structure Department of PhysicsCapital Normal UniversityBeijing 100048China Guangzhou Institute of Blue Energy Guangzhou 510555China Georgia Institute of Technology AtlantaGA 30332-0245USA Yonsei Frontier Lab Yonsei UniversitySeoul 03722Republic of Korea

Ocean is full of low-frequency,irregular,and widely distributed wave energy,which is suitable as the energy source for maritime Internet of Things(IoTs).Utilizing triboelectric nanogenerators(TENGs)to harvest ocean wave energy and power sensors is proven to be an effective ***,in random ocean waves,the irregular electrical energy output by general TENGs restricts the *** present,achieving regularized water wave energy harvesting relies on rather complex mechanical structure designs,which is not conducive to *** this work,we proposed a novel mechanical controlled TENG(MCTENG)with a simple controlled switch to realize the regularization *** structural parameters of the MC-TENG are optimized,and the optimal output voltage,output current,and transferred charge respectively reach 1684.2.V,85.4.A,and 389.9 nC,generating a peak power density of 38.4. W·m^(−3)·Hz^(−1).Under real water wave environment,the output of the MC-TENG is regularized and keeps stable regardless of any wave ***,the potential applications of the MC-TENG are demonstrated in powering environmental temperature,humidity,and wind speed *** work renders a simple approach to achieve effective regularized ocean wave energy harvesting,promoting the TENG industrialization toward practical application of maritime IoTs.

关键词： water wave energy harvesting triboelectric nanogenerators random excitation mechanical control regular output

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The survey of touristry information system

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Journal of Geographical Sciences 1999年第1期9卷 77-82页

作者： MAO Zheng-yuan(department of geography, Central {2. normal University, Wuhan 4.0079, {2.)

In this paper, the writer briefly introduces the concept of touristry information system (TIS), its current research situation, its necessity and urgency of development, analyses the structure, function and technical ... 详细信息

关键词： tourism Touristry Information System (TIS) touristry consumption touristry management touristry administration multi-medium network

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Geochemical constraints from hydrothermal fluid inclusions of altered deformation zone type Au(Ag)deposits in Yunkai area, South china

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Chinese Science Bulletin 1999年第S2期44卷 230-232页

作者： WANG Zuwei~1, ZHANG Haihua~2. YAO Dongliang~2.and ZHOU Yongzhang~3 1. department of geography, Tianjin {2. University, Tianjin 300071, china 2. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 51064., china 3. department of Earth Sciences, Zhongshan University, Guangzhou 5102.5, china eeszhou@*** department of geography Tianjin Normal University Tianjin 300071 China Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China department of Earth Sciences Zhongshan University Guangzhou 510275 China

THE altered deformation zone type Au (Ag) deposits share an important part from the precious metallicore deposits in the Yunkai area, South china. Their formation is a history of poly-stage evolution. Pre- liminary source strata, Calidoniam metamorphism, Indosinian-Yanshanian ductile shear deformation andassociated hydrotheraml alteration all play certain roles in the history. This note discusses the geochemical conditional of the hydrothermal fluids during mineralization. Two representative ore deposits, the Pangxidong Ag(Au) deposit and Hetai Au deposits are selectedfor this study. They are hosted in altered ductile shear zones. Wall-rock hydrothermal alteration is bothspatially and temporally associated with the development of the ductile shear system. Silicification occurred throughout the whole alteration process. There are three groups of quartz: thepredeformational quartz, the early stage hydrothermal quartz, and the late stage hydrothermal quartz asso-

关键词： precious metallic deposit fluid inclusions mineralizing fluid South china.

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The maximal super-singular integral operators on product spaces

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Science china Mathematics 2011年第12期54卷 2615-2626页

作者： WANG Hui1 & CHEN JieCheng2.3, 1department of Mathematics, xidian University, xi’an 710071, china 2.0} of Mathematics, Zhejiang normal University, Jinhua 32.004. china 3department of Mathematics, Zhejiang University, Hangzhou 31002., china 1. department of Mathematics Xidian University Xi’an 710071 China2. Department of Mathematics Zhejiang Normal University Jinhua 321004 China3. Department of Mathematics Zhejiang University Hangzhou 310027 China

We study the maximal super-singular integral operator T＊Ω,α,β（f）（x,y）=sup ∈1〉0,∈2.0｜∫｜u｜〉ε1,｜v｜〉ε2.b1（｜u｜）b2.｜u｜）Ω（u＇,u＇）/｜u｜^n＋α｜u｜^m＋β-f（x-u,y-u）dudu｜defined on all f ∈ S（R^n ×R^m）, where 0 ≤ α,β〈∞, b1 b2.∈ L∞（R＋1 ）,Ω satisfies certain cancellation conditions and Ω∈L1（S^n-1×S^m-1）in the case α,β〉0;Ω∈L（log＋L）（S^n-1×S^m-1）in the case αβ=0 and α＋β 〉0. It is proved that, for 1〈p〈∞.T＊Ω,α,βis a bounded operator from the homogeneous Sobolev space Lα,β^p（R^n×R^m）to the Lebesgue space L^p（R^n×R^m）.

关键词： super-singular integral maximal operator product spaces

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Application test of matter element analysis in earthquake forecast

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Acta Seismologica Sinica(English Edition) 1998年第6期11卷 89-94页

作者： LI HUA FENG department of geography, Zhejiang {2. University, Jinhua 32.004. china 1. department of geography Zhejiang Normal University 321004 Jinhua China

Calculation by means of the previous indices of the seismic activity can have the matter element analysis possess the forecast function. Readjusting repeatedly the grade limit value of every index can maximize the historical fitting ratio of the calculated and actual grade of the annual maximum magnitude, whose result is relatively ideal.

关键词： correlation function matter element analysis annual maximum magnitude earthquake forecast

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Application of ensemble kalman filter to geophysical parameters retrieval in remote sensing:A case study of kernel-driven BRDF model inversion

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Science china Earth Sciences 2006年第6期49卷 632-640页

作者： QIN Jun1, YAN Guangjian1, LIU Shaomin1, LIANG Shunlin2. ZHANG Hao1, WANG Jindi1 & LI xiaowen1 1. State Key Laboratory of Remote Sensing Science, School of geography and Remote Sensing, Research Center for RS&GIS, Beijing normal University, Beijing 100875, {2. 2. department of geography, 2.81 Lefrak Hall, University of Maryland, College Park, MD2.74., USA 1. State Key Laboratory of Remote Sensing Science School of Geography and Remote Sensing Research Center for RS&GIS Beijing Normal University Beijing 100875 China 2. department of geography 2181 Lefrak Hall University of Maryland College Park MD20742 USA

The use of a priori knowledge in remote sensing inversion has great implications for ensuring the stability of inversion process and reducing uncertainties in retrieved results, especially under the condition of insufficient observations. Common optimization algorithms have difficulties in providing posterior distribution and thus cannot directly acquire uncertainties in inversion results, which is of no benefit to remote sensing application. In this article, ensemble Kalman filter (EnKF) has been introduced to retrieve surface geophysical parameters from remote sensing observations, which has the capability of not merely obtaining inversion results but also giving its posterior distribution. To show the advantage of EnKF, it is compared to standard MODIS AMBRALS algorithm and highly effi-cient global optimization method SCE-UA. The inversion abilities of kernel-driven BRDF models with different kernel combinations at several main cover types are emphatically discussed when observa-tions are deficient and a priori knowledge is introduced into inversion.

关键词： remote sensing inversion, a priori knowledge, posterior distribution, ensemble kalman filter, BRDF, kernel-driven model, albedo.

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On the modes of urban-rural networking development in china

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Journal of Geographical Sciences 2000年第4期10卷 37-44页

作者： ZENG Ju-xin (department of geography, Huazhong {2. University, Wuhan 4.0079, china)

This essay tries to reveal the developmental regularity of urban-rural networking manifested by urbanization. The urban-rural networking is a reality and an inexorable trend of development. As a physical existence, the urban-rural networking reflects a result of the interaction between cities and rural areas; it is a necessary and sufficient condition for sustaining progress of cities and rural areas. As an objective developmental tendency, it reflects an urban-rural regional economic process. The author briefly analyzes two contradictory urban-rural developmental views, and puts forward a concept of the mode of urban-rural networking development. The author also analyzes the mode from the perspectives of economics and philosophy.

关键词： urban-rural areas networking development model

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Discovery and character of the Kunlun-Yellow River Movement

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Chinese Science Bulletin 1998年第10期43卷 833-836页

作者： CUI Zhijiu 1, WU Yongqiu 2.3 and LIU Gengnian 1 1. department of geography, Peking University, Beijing 100871, {2. 2. Open Research Laboratory of Environmental Changes and Natural Disaster of State Education Commission, Beijing 100875, {2. department of geography Peking University Beijing China Open Research Laboratory of Environmental Changes and Natural Disaster of State Education Commission Beijing China department of geography Sichuan Normal Uni-versity Chengdu China

Based on geomorphological, tectonic and sedimentary data, a Kunlun Yellow River Tectonic Movement has been recognized in 1 10-0 60 Ma B.P. This tectonic movement, which leads to uplift of the Qinghai_xizang (Tibet) Plateau from 1 500 to 3 000-3 500 m, is periodic, abrupt and changeable in the movement rate of uplifting and slide slipping.

关键词： Kunlun Mountain Pass 700 kaB.P. tectonic movement.

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