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Analysis and Modeling on the Spatial Structure of Urban Land Use: A Case of Jinan, china

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chinese Journal of Population,{1. and Environment 2007年第2期5卷 34-40页

作者： zhao Huixia1, 3, Zhang Zulu2. Jiang Luguang 1 1. institute of {2.al sciences and natural resources research, chinese academy of sciences, beijing 100101, china 2. College of Population, resources and Environment, Shandong Normal University, Jinan Shandong 2.0014, china 3. Graduate School of the chinese academy of sciences, beijing 100039, china institute of {1.al {2. and natural resources research Chinese Academy of Sciences Beijing 100101 China Graduate School of the chinese academy of sciences Beijing 100039 China College of Population Resources and Environment Shandong Normal University Jinan Shandong 250014 China

Based on the data of urban land use obtained by remote sensing interpretation from aero images in 1.86 and 2.04, the spatial structure of Jinan is studied in this paper with the method of {1. Information System (GIS). According to the proportion of land for residence, industry and commerce, the urban district can be distinguished into three rings. Compared with the traditional theory of the ring structure in Western coun- tries, they have many distinctive characteristics. The main func- tions of the inner ring include residence, business and banking, but the proportion of residential land (more than 50%) is considerably higher than that of the cities in Western countries. The land proportion for residence and industry in the intermediate ring is equal on the whole. The main land of the outside ring is for industrial use. From 1.86 to 2.04, great changes have taken place on the land proportion of different types of use. In the inner ring, the land for residential and industrial use has shrunk much while the land for commercial use has increased. In the intermediate ring, the changes of the three types of land use were not very much and the temporal variation was relatively stable. On the contrary, the structure in the outside ring varies acutely. Though most of it is also for industrial use, the proportion of residential land has in- creased much. The three rings can also be divided into several sectors respectively, according to the function of land use clusters. New trends and mechanisms of the changes of land use impacting the urban structure were proposed in the end of the paper.

关键词： urban land use ring structure sector structure Jinan

A preliminary knowledge-driven prediction model of snail distribution in the Poyang Lake region

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chinese Science Bulletin 2008年第1期53卷 115-123页

作者： zhao An1,2.3 & BAO ShuMing1 1 The Key Lab of Poyang Lake Ecological Environment and Resource Development, Jiangxi Normal University, Nanchang 33002., china 2.{2. of geographic sciences and resources research, chinese academy of sciences, beijing 100101, china 3 School of Geography and Environmental sciences, Jiangxi Normal University, Nanchang 33002., china The Key Lab of Poyang Lake Ecological Environment and Resource Development Jiangxi Normal University Nanchang China institute of {1. {2. and resources research Chinese Academy of Sciences Beijing China School of Geography and Environmental sciences Jiangxi Normal University Nanchang China

Present monitoring and prediction of schistosomiasis’s intermediate parasite, snail, are based on re-mote sensing image’s spectral signatures, and the calculation result is in fact an incom-plete-constraints solution. TM image of the Poyang Lake region on October 31. 2.05 was combined with GIS thematic data (DEM, boundary of the Poyang Lake, vegetation, soil and land use) to make a prediction on snail spatial distribution in the region by remote sensing, geo-informatics and knowl-edge-driven modeling according to mechanism of snail occurrence. Result shows that with change of overall fuzzy membership of snail occurrence from high to low, snail occurrence of the snail samples of validation group goes up to 81. within 1.% high fuzzy membership range, denoting high efficiency of the model in predicting snail occurrence.

关键词：鄱阳湖区域蜗牛分布模糊分类血吸虫病

A distributed hydrological model with its application to the Jinghe watershed in the Yellow River Basin

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Science china(Technological {1.) 2004年第z1期47卷 60-71页

作者： WANG Zhonggen1, ZHENG Hongxing1, liu Changming1, , WU Xianfeng2.2.& zhao Weimin3 1. Key Laboratory of Water Cycle & Related Land Surface Processes, {2. of geographic Science and natural resources research, chinese academy of sciences, beijing 100101, china 2. {2. of Environmental Science, beijing Normal University, beijing 100875, china 3. Water resources Conservation Committee of Yellow River, Zhengzhou 450003, china chinese Acad Sci Key Lab Water Cycle & Related Land Surface Proc Inst Geog Sci & Nat Resources Res Beijing 100101 Peoples R China beijing Normal Univ Inst Environm Sci Beijing 100875 Peoples R China Water resources Conservat Comm Yellow River Zhengzhou 450003 Peoples R China

For the purpose of water resources management in the Yellow River Basin with highly spatial difference, a daily distributed hydrological model was proposed, of which the determination of spatially-distributed parameters and model inputs processing were performed by means of GIS/RS. In the model, the computation of runoff yield was based on the topography index method and flow routing was modeled by Maskingum method. The operation of the model is followed by means of “command structure” technique based upon the topography of river network. A case study using the model was conducted for the Jinghe watershed, which locates at the middle Yellow River Basin. The simulation of the hydrological processes in 1.96 has shown that water quantity balance errors were less than 5% and the Nash-Sutcliffe coefficient arrived at 0.7, indicating that the model structure is justifiable, and the precision of the model can satisfy the purpose of water resources management.

关键词： distributed hydrological model, structure and equation, GIS and RS, Jinghe Basin, Yellow River Basin.

Variation properties of ionospheric eclipse factor and ionospheric influence factor

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Progress in natural Science:Materials International 2005年第6期15卷 573-576页

作者： zhao Chunmei 1.{1.*, YUAN Yunbin1. OU Jikun1.and CHEN Jinping3(1. institute of Geodesy and Geophysics,{{1., Wuhan 430077, china {1. Graduate School of{{1., beijing 1.0039, china 3. Department of Precision Instrument and Mechanology, Tsinghua University, beijing 1.0084, china) institute of Geodesy and Geophysics Chinese Academy of Sciences Wuhan 430077 China Graduate School of chinese academy of sciences Beijing 100039 China Department of Precision Instrument and Mechanology Tsinghua University Beijing 100084 China

The concepts and calculation methods of ionospheric eclipse factor (IEF) and ionospheric influence factor (IFF) are further illustrated. The temporal and spacial variation properties of IEF and IFF are studied, which shows that the properties are influenced by the geographic position and season. The possibility of improving the precision of using GPS data to determine ionospheric delay based on the above variation properties is also analysed.

关键词： GPS ionospheric eclipse factor ionospheric influence factor

A mechanically coupled MEMS filter with high-Q width extensional mode resonators

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Journal of Semiconductors 2024年第8期45卷 41-48页

作者： Wei Wang Wenli liu Junyuan {1. Bo Niu Zeyu Wu Yinfang Zhu {2. Yang Fuhua Yang institute of Semiconductors Chinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

This work presents a novel radio frequency(RF)narrowband Si micro-electro-mechanical systems(MEMS)filter based on capacitively transduced slotted width extensional mode(WEM)*** flexibility of the plate leads to multiple modes near the target *** high Q-factor resonators of around 1.0000 enable narrow bandwidth filters with small size and simplified *** 1.wavelength and 2.wavelength WEMs were first developed as a pair of coupled modes to form a *** reduce bandwidth,two plates are coupled with aλ-length coupling *** 79.69 MHz coupled plate filter(CPF)achieved a narrow bandwidth of 8.8 kHz,corresponding to a tiny 0.01.%.The CPF exhibits an impressive 34.84 dB stopband rejection and 7.82.dB insertion loss with near-zero passband *** summary,the RF MEMS filter presented in this work shows promising potential for application in RF transceiver front-ends.

关键词： MEMS narrowband filter mechanically coupling quality factor width extensional mode

Dynamics of the Coordination of Economy-Society and Resource-Environment in Shandong Peninsula,china

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chinese Journal of Population,{1. and Environment 2012年第3期10卷 62-71页

作者： Han Rongqing zhao Minghua institute of {1. {2. and natural resources research CASBeijing 100101China Graduate University of chinese academy of sciences Beijing 100049China Population Recourses and Environment College of Shandong Normal UniversityJinan Shandong 250014China

Shandong Peninsula,as a more developed region in Shandong Province even the east coast of china,is facing challenges from {1. and environment *** paper tried to track and assess the coordination status and the dynamic between resource-environment and economy-society systems in Shandong Peninsula during 2.01.2.08 in order to provide decision support for regional *** appraisal index system was built including five aspects of harmony degree(A),sustainability degree(B),opening degree(C),stability degree(D) and controllability degree(E).The results showed that:1. The coordination level of resource-environment and economy-society in Shandong Peninsula has continuously grown,and it has undergone three stages:no coordinated degree(2.01.2.02.,weak coordinated degree(2.03-2.06) and basically coordinated degree(2.07-2.08).2. Five indexes of criterion hierarchy also increased overall,but each index showed different *** degree,sustainability degree and opening degree rose all the time,while stability degree and controllability degree alternately rose and *** improvement of controllability degree was the slowest.3) The aggravating trend of environmental pollution was slowing *** economic growth was driven by industrial growth and urbanization typically and investment was still the main force to pull the regional economic *** the same time,technology and education were becoming more and more important for economic *** level of foreign capital utility declined and the {2.al advantage of Shandong Peninsula was *** some characteristics of knowledge economy were *** {1. become the main constraint factor of fast development in Shandong *** is necessary to further strengthen the coordination ability of government on regional sustainable development.

关键词： dynamics coordination of resource-environment andeconomy-society Shandong Peninsula

Characterizing the Mass Elevation Effect across the Tibetan Plateau

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Journal of Mountain Science 2018年第12期15卷 2651-2665页

作者： HAN Fang ZHANG Bai-ping zhao Fang WAN Li TAN Jing LIANG Tian School of Civil and Architectural Engineering, Shandong University of Technology institute of {2. sciences and natural resources research, State Key Laboratory of resources and Environmental Information System, chinese academy of sciences College of Environment and Planning, Henan University chinese research academy of Environmental sciences beijing Aerospace TITAN Technology Co., Ltd School of Civil and Architectural Engineering Shandong University of TechnologyZibo 255000China institute of {1. {2. and natural resources research State Key Laboratory of Resources and Environmental Information SystemChinese Academy of SciencesBeijing 100101China College of Environment and Planning Henan UniversityKaifeng 455000China chinese {1. {2. of Environmental sciences Beijing 100012China beijing Aerospace TITAN Technology Co. LtdBelling 100083China

It is over 1.0 years since the term Mass Elevation Effect(MEE) was proposed by A. D. Quervain in 1.04. The quantitative study of MEE has been explored in the Tibetan Plateau in recent years; however, the spatial distribution of MEE and its impact on the ecological pattern of the plateau are seldom known. In this study, we used a new method to estimate MEE in different regions of the plateau, and, then analyzed the distribution pattern of MEE, and the relationships among MEE, climate, and the altitudinal distribution of timberlines and snowlines in the Plateau. The main results are as follows:(1. The spatial distribution of MEE in the Tibetan Plateau roughly takes on an eccentric ellipse in northwestsoutheast trend. The Chang Tang Plateau and the middle part of the Kunlun Mountains are the core area of MEE, where occurs the highest MEE of above 1.℃; and MEE tends to decreases from this core area northwestward, northeastward and southward;(2. The distance away from the core zone of the plateau is also a very important factor for MEE magnitude, because MEE is obviously higher in the interior than in the exterior of the plateau even with similar mountain base elevation(MBE).(3) The impacts of MEE on the altitudinal distribution of timberlines and snowlines are similar, i.e., the higher the MEE, the higher timberlines and snowlines. The highest timberline(4600–4800 m) appears in the lakes and basins north of the Himalayas and in the upper and middle reach valleys of the Yarlung Zangbo River, where the estimated MEE is 1..2.2.℃–1..6904℃. The highest snowline(6000–62.0 m) occurs in the southwest of the Chang Tang Plateau, where the estimated MEE is 1..2.59°C–1..5488℃.

关键词： Mass Elevation Effect (MEE) Distribution Pattern Timberline Snowline Tibetan Plateau

Method for Evaluating the Degrees of Land Use Sustainability of Mountainous County and its Application in Yunnan Province,china

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Journal of Mountain Science 2008年第2期5卷 98-112页

作者： YANG Zisheng liu Yansui TAO Wenxing XU Jingling {1. Qiaogui institute of Land ＆ {1. and Sustainable Development Yunnan University of Finance and Economics Kunming 650221 China Institu te of geographic {1. and {2. resources research Chinese Academy of Science Beijing 100101 China Department of Land ＆ resources of Yunnan Province Kunming 650224 China

The evaluation of sustainable land use is the key issue in the field of studying the sustainable land utilization. In general analysis, the sustainable land use is evaluated respectively from its ecological sustainability, economic sustainability and social sustainability in china and other countries in recent years. Although this evaluation is an important work, it seems insufficient and hard to comprehensively reflect the whole degree of land use sustainability. Thus, to make up this deficiency, this paper brings forward the evaluation indexes, which make it possible to quantitatively reflect the whole degree of land use sustainability, namely, the concept of ＂degrees of overall land use sustainability＂（Dos）, and {1. and measurement development of the method of and calculation in Dos. Taking the evaluation of the degree of land use sustainability in county regions of Yunnan Province as the actual example for analysis, results are basically as follows： 1. The degree of land use sustainability （Dos） is the ration index to organically and systematically integrate the degree of ecological friendliness （DeF）, the degree of economic viability （Dev） and the degree of social acceptability （Dsa）, able to comprehensively reflect the whole sustainability degree of regional land use 2. Based on the value of Dos, the grading system and standard for the sustainability of land use may be established and totally divided into five grades, namely, the high-degree sustainability, middle-degree sustainability, low-degree sustainability, conditional sustainability and non-sustainability. Meanwhile, the standard for distinguishing sustainability grades has also been confirmed so as to determine the nature of sustainability degrees in different grades. This makes the possibility for the combination of nature determination with ration in {1. result and provides with the scientific guideline and decision-making gist for better implementation of sustainable land use strategy

关键词： Land use degrees of overall sustainability evaluation method county level degrees of ecological friendliness degrees of economic viability degrees of social acceptability

Meteorological control on CO_2.flux above broad-leaved Korean pine mixed forest in Changbai Mountains

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Science china Earth {1. 2005年第Z1期48卷 116-122页

作者： GUAN Dexin, WU Jiabing, YU Guirui, SUN Xiaomin, zhao Xiaosong, HAN Shijie & JIN Changjie institute of Applied Ecology,{2., Shenyang 110016, china institute of geographic sciences and natural resources research,{2., beijing 100101, china institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China institute of {1. {2. and natural resources research Chinese Academy of Sciences Beijing 100101 China

The impacts of temperature, photosynthetic active radiation (PAR) and vapor pressure deficit (VPD) on CO2.flux above broad-leaved Korean pine mixed forest in the Changbai Mountains were studied based on eddy covariance and meteorological factors *** results showed that, daytime CO2.flux was mainly controlled by PAR and they fit Michaelis-Menten equation. Meanwhile VPD also had an influence on the daytime flux. Drier air reduced the CO2.assimilation of the ecosystem, the drier the air, the more the reduction of the assimilation. And the forest was more sensitive to VPD in June than that in July and August. The respiration of the ecosystem was mainly controlled by soil temperature and they fit exponential equation. It was found that this relationship was also correlated with seasons; respiration from April to July was higher than that from August to November under the same temperature. Daily net carbon exchange of the ecosystem and the daily mean air temperature fit exponential equation. It was also found that seasonal trend of net carbon exchange was the result of comprehensive impacts of temperature and PAR and so on. These resulted in the biggest CO2.uptake in June and those in July and August were next. Annual carbon uptake of the forest ecosystem in 2.03 was -1.4 gC. m-2.

关键词： CO2 flux, soil temperature, PAR, broad-leaved Korean pine mixed forest.