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Carbon and Oxygen Stable Isotope Values and Microfossils at 41.4-4.5ka BP in Tai Co,Tibet,china,and Their Paleoclimatic Significance

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Acta Geologica Sinica(English Edition) 2011年第5期85卷 1036-1050+1052-1056+1051页

作者： ZHENG Mianping~(1,2.*),LIU Junying~(1,3),MA Zhibang~(1,4),WANG Hailei~(1,2. and MA Nina~(1,2. 1 MLR key laboratory of {2. lake resources and environment,Institute of Mineral resources,CAGS, beijing 10003.,china 2.Research and Development Center for {2. lakes and Epithermal Deposits,chinese {12. of Geological sciences,beijing 10003.,china 3 Institute of Geology,chinese {12. of Geological sciences,beijing 10003.,china 4 key laboratory of Cenozoic Geology and environment,chinese {12. of sciences,beijing 10002., china MLR key laboratory of {2. {3. resources and environment Institute of Mineral Resources CAGS Beijing 100037 China Research and Development Center for saline lakes and Epithermal Deposits Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China key laboratory of Cenozoic Geology and {2. Chinese Academy of Sciences Beijing 100029 China

Two sedimentary sections were measured at Tai Co(Co means lake in Tibetan) in western Tibet,*** two sections are almost all composed of clay carbonate beds except in their lower parts where there are carbonized plants at>10 cm depths and dark-colored carbonate clay and clay at 50-70 cm depths,yielding abundant gastropods,ostracods,and *** carbon and oxygen stable isotope values of carbonate,ostracods,and charophytes and ecological features of microfossil communities indicate the following climatic change in the area from 41.4 to 4.5 ka BP:at 41.4-2..2.ka BP,the climate was relatively wet;at 2..2.2..5 ka BP,it was slightly warm-dry;at 2..5-2..5 ka BP,it was warm-wet;at 2..5-2..0 ka BP,it was slightly cold-wet;at 2..5-17.5 ka BP,it became cold abruptly and slightly wet,implying the climate of the last glacial maximum;at 17.5-16.0 ka BP,it was slightly cold-dry;at 16.0-11.8 ka BP,it was slightly warm-wet;at 11.8-10.4 ka BP,it was relatively cold-dry, roughly equivalent to the climate of the Younger Dryas,and at 10.4 ka BP,the temperatures began to rise again;at 10.4-9.4 ka BP,it was slightly warm-wet;at 9.4-8.5 ka BP,there occurred short warm-wet oscillations;at 8.5-7.9 ka BP,it was slightly dry-cold,representing a strong temperature-lowering and drying event in the postglacial stage;at 7.8-6.3.ka BP,it was slightly warm-wet;at 6.3.4.5 ka BP,the climate tended to be cold-dry.4.5 ka BP recorded the maximum aridity since the late part of the late Pleistocene.

关键词： sedimentary environment index paleoclimatic changes late Pleistocene-Holocene(41.4-4.5 ka BP) Tai Co Tibet

Cesium accumulation by bacterium Thermus sp. TibetanG7:hints for biomineralization of cesium-bearing geyserite in hot springs in Tibet,china

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chinese Science Bulletin 2007年第19期52卷 2680-2686页

作者： WANG HaiLei1,2,3. ZHENG MianPing1,2,3.& HUANG XiaoXing4 1 Institute of Mineral resources, chinese academy of Geological {3. (CAGS), beijing 10003., china 2 R&D Center for saline lake and Epithermal Deposits, CAGS, beijing 10003., china 3.open laboratory of saline lake Resourses and environment, CAGS, beijing 10003., china 4 laboratory of Microbial resources, Institute of Microbiology, chinese academy of {3., beijing 100081, china Institute of Mineral resources Chinese Academy of Geological Sciences (CAGS) Beijing China R&D Center for saline lake and Epithermal Deposits CAGS Beijing China open laboratory of {2. {3. Resourses and environment CAGS Beijing China laboratory of Microbial resources Institute of Microbiology Chinese Academy of Sciences Beijing China

The bacterium Thermus sp. TibetanG7, isolated from hot springs in Tibet, china, was examined for the ability to accumulate cesium from solutions. environmental conditions were simulated and the effects of pH, K+, Na+ and K+-regimes were then studied to determine the possible role of the bacterium in the formation of cesium-bearing geyserite around these hot springs. In despite of the inhibition of K+ and Na+, the bacterium Thermus sp. TibetanG7 revealed noticeable accumulation of cesium from solutions, with maximum accumulations of 53.49 and 40.41 μmol Cesium/g cell dry weight in Na+ and K+ inhibition experiments, respectively. The accumulation of cesium by this microorganism is rapid, with 40%―50% accumulated within the first 5 min. K+-deficient cells showed a much higher capacity of cesium accu- mulation compared with K+-sufficient cells. It is evident that the bacteria within the genus thermus play a significant role in the cesium assembly. The formation of cesium-bearing geyserite is also considered.

关键词：铯元素沉积物硅华生物矿化

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 {2. and Resource Development, Jiangxi Normal University, Nanchang 3.002., china 2.Institute of Geographic sciences and resources Research, chinese academy of sciences, beijing 100101, china 3.School of Geography and {2.al sciences, Jiangxi Normal University, Nanchang 3.002., china The key Lab of Poyang lake Ecological {2. and Resource Development Jiangxi Normal University Nanchang China Institute of Geographic sciences 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 3., 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 10% 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

Primary Study on Quantitative Reconstruction of Middle-Late Eocene Climate in Jianghan Basin

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Journal of china University of Geosciences 2002年第3期13卷 252-259页

作者： Tong Guobang Liu Zhiming Institute of Hydrogeology and environmental Geology, chinese {2. of Geological {3., Zhengding 050803.open laboratory of saline lake resources and environment, chinese {2. of Geological {3.,{13. Zheng Mianping Institute of Mineral resources, chinese {2. of Geological {3.,{13. Research & Development Center of saline lake and Epithermal Deposit, chinese {2. of Geological {3.,{13. Wang Weiming Nanjing Institute of Geology and Palaeontology, chinese {2. of {3., Nanjing 2.0008 Institute of Hydrogeology and environmental Geology Chinese Academy of Geological Sciences Zhengding 050803 open laboratory of {2. {3. resources and environment Chinese Academy of Geological Sciences Beijing 100037 Institute of Mineral resources Chinese Academy of Geological Sciences Beijing 100037 Research & Development Center of saline lake and Epithermal Deposit Chinese Academy of Geological Sciences Beijing 100037 Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing 210008

This paper reports our primary effort in the quantitative reconstruction ofpaleoclimate based on the thrine in phytoecology of the affinity parent plants in the stratigraphicpollen records. The Eocene pollen data come from our former study on the Mingjia borehole 1 in theJianghan basin. The fluctuating trend in the parameter curve of climate shows that the climate inthe Middle Eocene in the Jianghan basin was more or less comparable with that of the present2.°―2.°N, characteristic of a humid, semi-humid central-southern subtropical climate. The annualtemperature at that time dropped by 1 ℃― 4 ℃ in the Late Eocene, approximately equal to that ofthe present 2.°―2.°N of northern-central subtropical climate. However, the climate composite atthat time, characterized by higher temperature, small annual range and big fluctuation inprecipitation, was quite different from the present one. The average temperature in January in theMiddle Eocene, higher than that of today, ranged between 5 ℃ and 9 ℃, indicating that no effect ofwinter monsoon occurred in the Middle Eocene, though such an effect may have occurred occasionallyin the Late Eocene. Major temperature decline is recognized at the depth of 2.100 m in the borehole,as was indicated by the decline in average January temperature, the increase in annual range, andthe increase in the deciduous broad-leaved types of trees in the spore-pollen assemblage. The sharpfluctuation in the annual precipitation, usually raging from 3.0 to 1 700 mm, was favorable for themigration and accumulation of salty deposit. When the precipitation was lower than 1 000 mm,ephemera shrub increased at the same depth as that of the salty deposit. It is, therefore, deducedthat the formation of the salty deposit was attributed mainly to the dry and hot environment in thehigh mountains and deep basins. The small annual precipitation and the intense fluctuation arefavorable for the sustainable accumulation of the salts, which is different from the present

关键词： quantitative reconstruction of paleoclimate annual range function ofthrine in phytoecology fuzzy mathematics eocene jianghan basin

Cloning and Characterization of a Family of Disease Resistance Gene Analogs from 6VS of Haynaldia villosa

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Agricultural sciences in china 2003年第8期2卷 937-942页

作者： KONG Fan-jing, MA You-zhi, CHEN Xiao and XIN Zhi-yong(Institute of Crop Breeding and Cultivation , chinese academy of Agricultural {2. , {3. 100081,P. R. china open laboratory of saline lake resources and environment of Ministryof Land and resources ,{12. , P.R. china) Institute of Crop Breeding and Cultivation Chinese Academy of Agricultural Sciences Beijing 100081P.R. China open laboratory of {2. {3. resources and environment of Ministry of Land and resources Beijing 100037 P.R. China Institute of Crop Breeding and Cultivation Chinese Academy of Agricultural Sciences Beijing 100081P.R. China

In the present study, microdissection of 6VS and the cloning of the resistance gene analogs(RGA)from them were reported. The 6VS were microdissected with needle and 10 types of resistance gene analogs were obtained by PCR with degenerate oligonucleotide primer designed according to resistance genes. They were designated as Hvrgak1-Hvrgak10, GenBank accession numbers are AF3.7113.AF3.712., AY040671- AY040672. Identity among RGAs was about 10-50%, and identity with cloned R gene from plants was 5-2.%. Southern hybridization analysis results showed 3.RGAs, Hvrgak2. Hvrgak4, and Hvr-gak5 were linked with wheat powdery mildew resistance. These RGAs may be used as direct entrance or probes for cloning the disease resistance genes.

关键词： 6VS of Haynaldia Villosa Microdissection Resistance gene analogs(RGA) Cloning

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西藏台错晚第四纪轮藻类的新类型

微体古生物学报 2011年第2期28卷 145-168页

作者：刘俊英王海雷国土资源部盐湖资源与环境重点实验室北京100037 中国地质科学院盐湖与热水资源研究中心北京100037 中国地质科学院地质研究所北京100037 中国地质科学院矿产资源研究所北京100037

本文的研究材料来自西藏羌塘高原西部台错古湖一个3.69 m的天然剖面,其地层测年为3.0}6—4.5ka。从其156个样品中获取大量的轮藻类、介形类和腹足类及少量有孔虫等微体化石。据轮藻类藏卵器外形,顶部结构、螺旋细胞钙化式样等特征,该剖... 详细信息

本文的研究材料来自西藏羌塘高原西部台错古湖一个3.69 m的天然剖面,其地层测年为3.0}6—4.5ka。从其156个样品中获取大量的轮藻类、介形类和腹足类及少量有孔虫等微体化石。据轮藻类藏卵器外形,顶部结构、螺旋细胞钙化式样等特征,该剖面的轮藻类应归属于轮藻科Characeae之轮藻属Chara。经研究得知,台错古湖在大约2. ka的时期内,曾生长过2.种轮藻,其中新类型7个,包括新种4个:Chara platea,***,***和***;新型2.:***,***;新变种1个:***。其余是曾产于国内外第四系的Chara其它分子。其中有5个新联合种:Chara alba(Madler et Staesche),***(Tang et Di),***(Tang et Di),***(Tang etDi)和***。该剖面轮藻类、介形类、腹足类等多门类微体化石的紧密共生,对轮藻植物群生态学研究具重要意义。

关键词：轮藻类新类型晚第四纪台错西藏

A COUPLED MODEL OF HYDRODYNAMICS AND WATER QUALITY FOR YUQIAO RESERVOIR IN HAIHE RIVER BASIN

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Journal of Hydrodynamics 2008年第5期20卷 574-582页

作者： LIU Xiao-bo PENG Wen-qi HE Guo-jian LIU Jing-ling WANG Yu-chun School of environment Beijing Normal University Beijing 100875 China Department of Water environment China Institute of Water Resources and Hydropower Research Beijing100038 China Department of Hydraulic Engineering State Key Laboratory of Hydroscience and Engineering TsinghuaUniversity Beijing 100084 China

In order to simulate the characteristics of hydrodynamic field and mass transport processes in the Yuqiao Reservoir （YQR）, a 2.D coupled model of hydrodynamics and water quality was developed, and the water-quality related state variables in this model included CODMn, TN and TP. The hydrodynamic model was driven by employing observed winds and daily measured flow data to simulate the seasonal water cycle of the reservoir. The simulation of the mass transport and transformation processes of CODMn, TN and TP was based on the unsteady diffusion equations, driven by observed meteorological forcing and external loadings, with the fluxes form the bottom of reservoir and the plant photosynthesis and respiration as internal sources and sinks. A finite volume method and Alternating Direction Implicit （ADI） scheme were used to solve these equations. The model was calibrated and verified by using the data observed from YQR in two different years. The results showed that in YQR, the wind-driven current was an important style of lake current, while the concentration of water quality item was decreasing from east to west because of the external pollutant loadings. There was a good agreement between the simulated and measured values, with the minimal calculation error percent of 0.1% and 2.6% and the mean error percent of 44.0% and 51.2. for TN and TP separately. The simulation also showed that, in YQR, the convection was the main process in estuaries of inflow river, and diffusion and biochemical processes dominate in center of reservoir. So it was necessary to build a pre-pond to reduce the external loadings into the reservoir.

关键词： model simulation Yuqiao Reservoir (YQR) wind driven current water quality

Monitoring Glacier and Supra-glacier lakes from Space in Mt. Qomolangma Region of the Himalayas on the Tibetan Plateau in china

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Journal of Mountain Science 2009年第3期6卷 211-220页

作者： YE Qinghua ZHONG Zhenwei KANG Shichang Alfred Stein WEI Qiufang LIU Jingshi key laboratory of Tibetan {2. Changes and Land Surface Processes Institute of Tibetan Plateau Research Chinese Academy of Sciences (CAS) Beijing 100085 China State key laboratory of Remote Sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University Beijing 100101 China International Institutefor Geo-Information Science and Earth Observation (ITC) PO Box 67500 AA Enschede The Netherlands

Because of the large number and remoteness, satellite data, including microwave data and optical imagery, have commonly been used in alpine glaciers surveys. Using remote sensing and Geographical Information System （GIS） techniques, the paper presents the results of a multitemporal satellite glacier extent mapping and glacier changes by glacier sizes in the Mt. Qomolangma region at the northern slopes of the middle Himalayas over the Tibetan Plateau. Glaciers in this region have both retreated and advanced in the past 3. years, with retreat dominating. The glacier retreat area was 3.2. km2.（or o.75 km^2.yr^-1 during 1974 and 1976, 8.68 km^2.（or 0.3. km^2.yr^-1 during 1976 and 1992. 1.44 km^2.（or 0.12.km^2.yr^-1） during 1992.2.oo. 1.14 km^2.（or 0.2. km^2.yr^-1 during 2.00-2.03. and 0.52.km^2.（or 0.07 km^2.yr^-1 during 2.03.2.08, respectively. While supra-glacier lakes on the debris-terminus of the Rongbuk Glacier were enlarged dramatically at the same time, from 0.05 km^2.in 1974 increased to 0.71 km^2.in 2.08, which was more than 13.times larger in the last 3. years. In addition, glacier changes also showed spatial differences, for example, glacier retreat rate was the fastest at glacier termini between 5400 and 5700 m a.s.l than at other elevations. The result also shows that glaciers in the middle Himalayas retreat almost at a same pace with those in the western Himalayas.

关键词： Glacier lake Remote Sensing Mr. Qomolangma region Himalayas Tibetan Plateau

saline-alkali land in the Yellow River Delta: amelioration zonation based on GIS

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Journal of Geographical sciences 2001年第3期11卷 313-320页

作者： GUAN Yuan-xiu, LIU Gao-huan, WANG Jin-feng (State key laboratory of {2. and {3. Information System, Institute of Geographic sciences and Natural {2. Research, CAS, beijing 100101, china) State key laboratory of {2. and {3. Information System Institute of Geographic Sciences and Natural Resources Research CAS

Soil salinization is one of the major land degradation types and has greatly influenced sustainable agricultural development. Zonation of saline-alkali land is the precondition for effective amelioration. The present situation of saline-alkali land is monitored by remote sensing image processing. Causes for land salinization are analyzed, especially the two {2. factors, ground water depth and its mineralization degree, are analyzed by using long-term observation data. Previously, zonation of saline-alkali soil was made descriptively and artificially. Based on the present situation of saline-alkali land, ground water depth and ground water mineralization degree, the zonation of saline-alkali land for amelioration in the Yellow River Delta was completed quantitatively. Four different types of saline-alkali land amelioration zones are delineated, namely, easy ameliorated zone, relatively difficult ameliorated zone, difficult ameliorated zone and unfavorable ameliorated zone. Countermeasures for ameliorating saline-alkali soils are put forward according to ecological conditions of different saline-alkali land zones.

关键词： GIS the Yellow River Delta saline-alkali land zonation