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THE CHARACTERISTICS AND MAIN PROBLEMSOF MINORITY REGIONS IN china

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chinese Geographical Science 2001年第4期11卷 8-13页

作者： ZHANG Luo-cheng, WU Chu-cai(nanjing {2. of {3. & limnology, the chinese academy of sciences, nanjing 2.0008, P. R. china) nanjing institute of {2. & {3. the Chinese Academy of Sciences Nanjing P. R. China

ABSTRACT: china is a country that has a large number of minorities, who live in specific regions which are mainly located in central and west china. These regions are abundant in natural resources, which are potential advantages and also an important basis for economic development in these regions. They are of general importance for china in strategic and ecological terms. They will not only affect the environment for survival of the minority regions but also affect the sustainable development of the eastern and central parts of china and even the survival and development of the chinese nation as a whole. Minorities live in relatively compact communities, among the 55 minorities, 3. of them were highly compact minorities, with a compact level of more than 90% . Here the development in infrastructure as well as social and economic development (e. g. export-oriented economy) has been and is still slow, regional poverty are most concentrated. The economic structures in minority areas are still in the low stage, which have resulted in underdevelopment in these regions.

关键词： minority regions development problems

DYNAMIC VARIATIONS OF WATER QUALITY IN TAIHU LAKE AND MULTIVARIATE ANALYSIS OF ITS INFLUENTIAL FACTORS

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Journal of Geographical sciences 1997年第3期7卷 72-82页

作者： cai Qiming Gao Xiyun Chen Yuwei Ma Shengwei nanjing {2. of {3. and limnology, CAS, nanjing 2.0008 People’s Republic of chinaMartin Dokulil {2. of limnology, Austria

Dynamic variation of water quality in Meiliang Bay and part of West Taihu Lake has been analysed based on data from 1991 to 1992. Principal Component Analysis is used to reveal the mutual relationships of various factors. It is shown that there existis an obvious spatial and temporal variation in the main factors of water quality. Annual values of TP, CON, TN, Chl-a and conductivity decrease evidently from inner Meiliang Bay to the outer from north to south. TP and TN fluctuate seasonally with much higher value in winter. This is particularly true for the mouth of Liangxi River. In addition, the Chl-1 has a synchronous variation with water temperature, although being lagged a little, and closely relates to TP and TN. Finally, the results from Principal Component Analysis show that TP, TN, SS (or SD), water temperature and Chl-a are the most influential factors to water qualuty in this area, and both suspensions and algae can contribute to transparency to Taihu Lake.

关键词： Taihu Lake dynamic variation water quality principal component analysis.

“Co-culture Engineering”for Enhanced Phytoremediation of Metal Contaminated Soils

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Pedosphere 2004年第4期14卷 475-482页

作者： NIcai-Ying SHIJi-Yan LUOYong-Ming CHENYing-Xu DepartmentofEnvironmentalEngineering SchoolofEnvironmentandResourceSciencesZhejiangUniversityHangzhou310029（China）. SoilandEnvironmentBioremediationResearchCentre InstituteofSoilScienceChineseAcademyofSciencesNanjing210008（China）

A co-culture of two plant materials, Astragalus sinicus L., a leguminous plant with concomitant nodules, and Elsholtzia splendens Naki-a Cu accumulator, along with treatments of a chelating agent (EDTA), root excretions (citric acid), and a control with E. splendens only were used to compare the mobility of heavy metals in chelating agents with a co-culture and to determine the potential for co-culture phytoremediation in heavy metal contaminated soils. The root uptake for Cu, Zn, and Pb in all treatments was significantly greater (P ＜ 0.05) than that of the control treatment. However with translocation in the shoots, only Cu, Zn, and Pb in plants grown with the EDTA treatment and Zn in plants cocropped with the A. sinicus treatment increased significantly (P ＜ 0.05). In addition, when a co-culture in soils with heavy and moderate contamination was compared, for roots in moderately contaminated soils only Zn concentration was significantly less (P ＜ 0.05) than that of heavily contaminated soils, however, Cu, Zn, and Pb concentrations of shoots were all significantly lower (P ＜ 0.05). Overall, this 'co-culture engineering' could be as effective as or even more effective than chelating agents, thereby preventing plant metal toxicity and metal leaching in soils as was usually observed in chelate-enhanced phytoremediation.

关键词： Astragalus sinicus chelating agents co-culture Elsholtzia splendens phytoremediation

Phylogenetic diversity and specificity of bacteria associated with Microcystis aeruginosa and other cyanobacteria

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Phylogenetic diversity and specificity of bacteria associate...

庆祝中国藻类学会成立3.周年暨第十五次学术讨论会

作者： SHI Limei~(1 2. cai Yuanfeng~1 YANG Hualin~1 XING Peng~2.LI Pengfu~(1 *) KONG Lingdong~1 KONG Fanxiang~(2.*) 1 School of Life sciences {2. University {2. 2.0093.china.E-mail: 2.State Key Laboratory of Lake Science and Environment {2. institute of geography and {13. chinese academy of sciences 73.East Beijing Road {2. 2.0008 china

＜正＞Interactions between bacteria and cyanobacteria have been suggested to have the potential to influence harmful algal bloom dynamics,however,little information on these interactions is *** aim of this study is to...

关键词：

Role of Cell Hydrophobicity on Colony Formation in Microcystis(Cyanobacteria)

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Role of Cell Hydrophobicity on Colony Formation in Microcyst...

中国藻类学会第八次会员大会暨第十六次学术讨论会

作者： Hualin Yang~1,Yuanfeng cai~1,Meng Xia~1,Xingyu Wang~1,Limei Shi~1,Pengfu Li*~1 and Fanxiang Kong~2.1 State Key Laboratory of Pharmaceutical Biotechnology,School of Life sciences,{2. University,{2. 2.0093.P.R.china 2.State Key Laboratory of Lake Science and Environment,{2. institute of geography and limnology,chinese {13. of sciences,73.East Beijing Road,{2. 2.0008,P.R. china

Colony formation is highly import ant for the competitive advantage of the cyanobacterium Microcystis overother phytoplankton *** laboratory-grown colonial Microcystis strains isolated from Lake Taihu(china) maintained colonial forms under the low light condition(10μE m s).The cell surface hydrophobicities of the Microcystis colonies were measured by cyanobacterial adherence to xylene in comparison

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Diversity and abundance of aerobic anoxygenic phototrophic bacteria in two cyanobacterial bloom-forming lakes in china

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Diversity and abundance of aerobic anoxygenic phototrophic b...

中国藻类学会第八次会员大会暨第十六次学术讨论会

作者： Limei Shi~(1,2.,Yuanfeng cai~(1,2.,Zhuting Chen~1,Yawei Zhou~'',Pengfu Li~(1*)and Fanxiang Kong~(2.) 1 State Key Laboratory of Pharmaceutical Biotechnology,School of Life sciences,{2. University,{2. 2.0093.P.R.china 2.State Key Laboratory of Lake Science and Environment,{2. institute of geography and {13.,chinese academy of sciences,73.East Beijing Road,{2. 2.0008,P. R.china

＜正＞Aerobic anoxygenic phototrophic（AAP） bacteria are widely distributed in marine and freshwater *** aims of this study were to investigate the diversity and abundance of AAP bacteria in cyanobacterial bloom-form...

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Microbial degradation and preliminary chemical characterization of Microcystis exopolysaccharides from a cyanobacterial water bloom of Lake Taihu

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Microbial degradation and preliminary chemical characterizat...

庆祝中国藻类学会成立3.周年暨第十五次学术讨论会

作者： LI Pengfu~(1,*),cai Yuanfeng~1,SHI Limei~1,GENG Lanfang~(1,3.,XING Peng~2.YU Yang~2.KONG Fanxiang~(2.*),WANG Yujiong~3.1 School of Life {2.,nanjing University,nanjing 2.0093.P.R.china 2.State Key Laboratory of Lake Science and Environment,nanjing institute of {13. and limnology,chinese academy of {2.,73.East Beijing Road, nanjing 2.0008,P.R.china 3.College of Life {2.,Ningxia University,Yinchuan 75002.,P.R.china

＜正＞The bloom biomass composed mainly of Microcystis *** harvested from Lake Taihu,***（FEPS,exopolysaccharides from filed-grown Microcystis spp.） were extracted from the bloom mass with 3.*** contained 5.4%protein...

关键词：

FORMATION AND DEVELOPMENT OF TAIHU LAKE AND RECENT DEPOSITION

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Science china Chemistry 1989年第4期32卷 478-492页

作者：孙顺才伍贻范 nanjing institute of {2. Academia Sinica

Situated in the Taihu plain between the mouth of the Changjiang River and theHangzhou Bay, the Taihu Lake is a large shallow-water lake in china with a surface area of 2.2..8 km^*** lake bottom mainly consists of loess-like sediment. Some buried and silted up channels and residual depressions can be found at the bottom and a lot of Neolithic cultural relics on the loess-like sediment. This indicated that the Taihu Lake was formed on the alluvial plain charaterized by widely deposited loess-like sediment because of siltation and stagnancy of water, instead of by development from lagoons as reported in the *** deposition including influent-effluent current accumulation, wind-driven current and storm deposition in this lake occurred mainly in the south, the west shore and the midst of the *** sedimentary rate in the east Taihu Lake is about 1.7-1.8 mm/a, whereas in the west Taihu Lake it is about 0.41 ram/a, only 2.％ of that of the former.

关键词： lago on depression storm deposition wind surge Neolithic.

Monitoring Multi-Temporal Changes of Lakes on the Tibetan Plateau Using Multi-Source Remote Sensing Data from 1992.to 2.19:A Case Study of Lake Zhari Namco

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Journal of Earth Science 2024年第5期35卷 1679-1691页

作者： Juan Wu Chang-Qing Ke Yu cai Zheng Duan Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural ResourcesSchool of Geography and Ocean ScienceNanjing UniversityNanjing 210023China Collaborative Innovation Center of Novel Software Technology and Industrialization Nanjing 210023China Guangxi Water and Power Design institute Co. LtdNanning 530022China Collaborative Innovation Center of South china Sea Studies Nanjing 210023China Department of Physical geography and Ecosystem Science Lund UniversityLund 22362Sweden

Lake level,area and volume are sensitive indicators of climate *** present,many studies have focused on the interannual water balance of lakes,but lake level and area can change remarkably with seasons,especially for lakes with seasonal ice *** Namco,a seasonal frozen lake,was selected as an example to investigate its seasonal water ***-source altimetry and Landsat data were used to obtain the seasonal lake level and area from 1992.to 2.19,and seasonal lake volume variations were also *** results indicated the average lake level,area and volume in autumn were the *** lake level,area,and volume experienced three turning points approximately in 2.00,2.10,and 2.16,and showed an overall increasing trend from 1992.to 2.19,with slopes of 0.15 m/year,2.17 km^(2./year,and 0.14 km^(3./year,*** lake area expanded significantly in autumn,which was related to the abundant *** time of land surface runoff,increased temperature,and evaporation may be the reason for the low lake level and volume in *** precipitation was the dominant factor of water balance,which explained 62.09%,62.43.,and 62.10%of the variations in lake level,area,and volume,respectively.

关键词： lake level lake area lake volume satellite altimetry landsat Zhari Namco hydrogeology