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Science china Earth sciences 2005年第10期48卷 1698-1707页

作者： WANG Rujian1 & CHEN Ronghua2.1. State key laboratory of Marine {2., Tongji University, Shanghai 2.0092. china 2. The key laboratory of Submarine Geoscience, State Oceanic Administration, Hangzhou 310012. china State key laboratory of Marine {2. Tongji University Shanghai china The key laboratory of Submarine Geoscience State Oceanic Administration Hangzhou{2.

Cycladophora davisiana (Radiolarian) contents are counted in two cores of the Ber-ing Sea and correlated well with the oxygen isotopic records of ice in the deep core obtained by the Greenland Ice Sheet Project II (GISP 2. and deep-sea sediments (SPECMAP) of the world oceans. Millennial scale climatic events, for example, Younge Dryas and B?lling/Aller?d events, Heinrich1 and Dansgaard-Oeschger1events, recorded by C. davisiana percents are distin-guished from Core B4-2. C. davisiana events b, c1, c2. d, e1 and e2. respectively, corresponding to oxygen isotopic 2.0, 3.1, 3.3, 4.0, 5.1 and 5.3, are identified from Core B2.9. High resolution re-cords of C. davisian are tuned to the oxygen isotopic records in GISP 2.and SPECMAP and the depth-age frameworks are established in the two cores, supplying a stratigraphic base for future paleoceanographic and paleoclimatic studies. High C. davisiana during the glacial periods in the two cores indicate that they can serve as a proxy of the glacial Subarctic Pacific Intermediate Water, which verifies the glacial Subarctic Pacific Intermediate Water brought from the Bering Sea.

关键词： Cycladophora davisiana, stratigraphic tool, YD and B/A events, Heinrich 1 and D/O1 events, proxy of glacial Subarctic Pacific Intermediate Water, late Quaternary, Bering Sea.

REVIEW OF THE CLASSIFICATION OF THE FAMILY AFROGRAPTIDAE (CRUSTACEA: CONCHOSTRACA)

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古生物学报 2003年第4期 593-597页

作者： SHEN Yan Bin (Nanjing institute of geology and Palaeontology, the{2. State key laboratory of Palaeobiology and Stratigraphy, Nanjing 2.0008)

Serration structure on the growth lines of the fossil conchostracans was considered as a key character for the family Afragraptidae. SEM micrographs of some living forms indicate that there is a row of setae on the growth lines. Setal articulations of the growth lines are broken off while their insertions remain, which form an apparently serration margin along the growth lines for the fossil specimens in the external mold. The setae of the growth lines belong to annulate type without setules and probably played in sensory function. This structure was found from about 32.species in seven genera of three families for the living conchostracans and 2. fossil genera. Multi radiating costae and stout tubercles on the valves are much more important than that of serration structure in high taxonomic status for the family Afrograptidae. An emended scheme of the Afrograptidae is presented herein. This family can be better placed in the suborder Estherielliina, rather than in the Estheritina.

关键词： serration structure setae genesis taxonomy Family Afrograptidae Conchostraca Crustacea

Jianshangou Bed of the Yixian Formation in West Liaoning, china

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Science china Earth sciences 2005年第3期48卷 298-312页

作者： CHEN Peiji1,2. WANG Qifei1, ZHANG Haichun1,2. CAO Meizhen1, LI Wenben1, WU Shunqing1 & SHEN Yanbin1 1. Nanjing institute of geology and Palaeontolgoy,{2., Nanjing 2.0008, china 2. State key laboratory of Palaeobiology and Stratigraphy, Nanjing 2.0008, china 1. Nanjing institute of geology and Palaeontolgoy Chinese Academy of Sciences 210008 Nanjing China 2. State key laboratory of Palaeobiology and Stratigraphy 210008 Nanjing China

The Jianshangou Bed is a set of fossil-bearing sedimentary interlayers of the basal volcano-sedimentary deposits of Yixian Formation in western Liaoning. It is rich in volcanic composition and consists of upper and lower grey-black shale, basal sandy conglomerate, top tuffaceous sandstone, middle massive silty mudstone and siltstone, as well as andesite, with a thickness of 2.—95 m. The Jianshangou Bed is famous all over the world for its bearing early birds, angiosperms and feathered dinosaurs, and it also yields bivalves, gastropods, con- chostracans, ostracods, shrimps, insects, fish, amphibians, primitive mammals and other reptiles. These fossils are typical representatives of the Late Mesozoic Jehol Biota from eastern Asia. The Chaomidianzi and Sihetun formations, proposed in recent years, are regarded as the junior synonyms of the Jianshangou Bed. The Jehol Biota is endemic to eastern Asia, however, it has a large geographic distribution, more than half of the European territory. Many species of the biota have close relationships with the late Jurassic European counterparts, e.g. both Confuciusornis and Archaeopteryx are primitive birds, Sinosauropteryx has a similar skeleton construction with Compsognathus, the ostracode assemblage from the Jianshangou Bed is close to that from the Purbeck Bed in England, and Aeschnidium occurs in both the Jianshangou Bed and Solnhofen of Germany. Based on the biostratigraphic correlation, the Jianshangou Bed is more probably late Tithonian in age. The latest zircon U-Pb dating of the Jianshangou Bed gives 12..2.Ma, and is close to the feldspar Ar/Ar dating of 12..6 Ma. A glauconite dating of 12. Ma was once got from England near the J/K boundary within the Purbeck Bed, so it is still problematic to place the J/K boundary at 130, 135, 137, 142.or 145.5 Ma in the International Stratigraphic Charts.

关键词： Yixian Formation, Jianshangou Bed, Jehol Biota, J/K Boundary.

Isotope Method for Confined Groundwater Recharge of the Lower Reaches of the Heihe River,Inner Mongolia,china

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Acta Geologica Sinica(English Edition) 2007年第4期81卷 668-673页

作者： CHEN Jiansheng ZHAO Xia FAN Zhechao and WANG Jiyang 1 State key laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 2.0098,{2. 2.institute of Isotope Hydrology Research,Hohai University,Nanjing 2.0098,{2. 3 institute of geology and geophysics,chinese academy of Science,Beijing 100018,{2. State key laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China

Environmental isotopes have been appfied to analyze confined groundwater recharge in the lower reaches of the Heihe River, Inner Mongolia. CFC is regarded as a tracer that determines the date of groundwater, the date being less than 45 a. The confined groundwater within the Gurinai area and Ejin Basin other than the surface water of Heihe River might have originated from precipitation from Qilian Mountain or/and the Tibetan Plateau. The deep confined groundwater overflows into an upper aquifer and emerges into the ground, forming springs and lakes within the low-lying area. The recharge volume is estimated to be around 400 million-cubic meters.

关键词： isotope CFC Ejin Basin Gurinai groundwater recharge precipitation Qilian Mountain

Modeling the impact of Australian Plate drift on Southern Hemisphere climate and environment

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chinese Science Bulletin 2005年第14期50卷 1495-1502页

作者： ZHOU Botao1,5, ZHAO Ping2. JIAN Zhimin3 & HE Jinhai4 1. Nansen-Zhu International Research Center, institute of Atmospheric Physics, chinese academy of sciences, Beijing 10002.,{2. 2. institute of Climate and Environment, chinese academy of Meteoro- logical sciences, Beijing 100081,{2. 3. laboratory of Marine geology, Tongji University, Shanghai 2.0092.{2. 4. Department of Atmospheric sciences, Nanjing institute of Meteorol- ogy, Nanjing 2.0044,{2. 5. Graduate School of the chinese academy of sciences, Beijing 100039,{2. Nansen-Zhu International Research Center Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Graduate School of the chinese academy of sciences Beijing 100039 China institute of Climate and Environment Chinese Academy of Meteorological Sciences Beijing 100081 China laboratory of Marine geology Tongji University Shanghai 200092 China Department of Atmospheric sciences Nanjing Institute of Meteorology Nanjing 210044 China

Using a global atmosphere-ocean coupled model with the present-day and 14 MaB.P. oceanic topogra- phy respectively, two experiments are implemented to inves- tigate the effect of different locations of Australian Plate on the atmospheric circulation in middle-high latitudes of the Southern Hemisphere. The results show that when Austra- lian Plate lay south at 14 MaB.P., both anticyclone circula- tions in the subtropical oceans and cyclone circulation around 60°-70°S are strengthened. Subtropical highs and circumpolar low pressure appear stronger, which results in much stronger Antarctic Oscillation and shorter period of Antarctic Oscillation Index (AOI) at 14 MaB.P. The rainfall and the surface air temperature also change correspondingly. The precipitation decreases around 40°S and increases around 60°-70°S, and the surface air temperature rises in high latitudes of the South Pacific and descends over the Weddell Sea and its north side. Besides, due to the changes of the temperatures and winds, Antarctic sea ice coverage also changes with its increasing in the Ross Sea and its west re- gions and decreasing in the Weddell Sea.

关键词：半球气候地球环球澳大利亚漂流物海洋地形学

δ^13Csc values of the loess-paleosol sequence in Dali area, Shaanxi Province, china, and paleoenvironmental implications

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chinese Science Bulletin 2003年第9期48卷 902-907页

作者： LI Yumei & LIU Dongsheng (LIU Tungsheng)institute of geology and {2., chinese academy of sciences, Beijing 10002. (e-mail: liyrney@***) 1. institute of geology and geophysics Chinese Academy of Sciences Beijing 100029

The carbon isotopic ratios of carbonate in the two profiles of the Dali area were analyzed and some new understandings on the influencing factors of the δ13CSC value of the loess-paleosol sequence and its paleoenvironmental implications were discussed preliminarily in this report. The 13CSC value of the Dali loess-paleosol sequence is synchronizing with the variance of magnetic susceptibility basically and the negative peaks of the δ13CSC curves are corresponding to the different developmental periods of the paleosol. It is believed that the intervention of the CO2.produced by plants will cause the decrease of the δ13CSC value, the amplitude of which may be relevant to the paleovegetation density and the ancient humidity. The relative biomass of C4 plants in the vegetation will affect the sublevel change of the δ13CSC. Low δ13CSC value by and large indicates the environmental conditions of the relatively abundant vegetation and humid climate. During the last 2.0000 years, the period with the sparsest vegetation and the most arid climate is the phase of the loess in L2.depositing and the period with the most abundant vegetation and the most humid climate is the last interglacial period. The δ13CSC curves of Dali also show that the High Temperature and Large Precipitation Event of the Qinghai-Tibetan Plateau during 40-30 kaBP had affected the Central Shaanxi Plain with relatively humid climate, and had apparent influence on the local vegetation and humidity.

关键词：古环境大理地区黄土陕西湿润气候碳同位素植被高温天气

Biomass estimation and uncertainty analysis based on CBERS-02.CCD camera data and field measurement

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Science china(Technological sciences) 2005年第S2期48卷 116-128页

作者： CHEN Liangfu1,2. GAO Yanhua1,3, CHENG Yu1,3, WEI Zheng1,3, XIAO Qing1,4, LIU Qinhuo1, YU Tao1, LIU Qijing5, GU Xingfa1 & TIAN Guoliang1 1. State key laboratory of Remote Sensing Science, {2. of Remote Sensing Applications, chinese academy of sciences, Beijing 100101, china 2. Geography and Environment College, Jiangxi Normal University, Nanchang 33002., china 3. Graduate University of chinese academy of sciences, Beijing 100039, china 4. Beijing Research {2. of Uranium geology, Beijing 100875, china 5. {2. of Geographic {12. and Natural Resources Research, chinese academy of sciences, Beijing 100101, china 1. State key laboratory of Remote Sensing Science Institute of Remote Sensing Applications Chinese Academy of Sciences 100101 Beijing China 2. Geography and Environment College Jiangxi Normal University 330027 Nanchang China 3. Graduate University of chinese academy of sciences 100039 Beijing China 4. Beijing Research institute of Uranium geology 100875 Beijing China 5. institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences 100101 Beijing China

The study site is located in Qianyanzhou experimental station and the surrounding area. Based on CBERS-02.satellite data and field measurement, we not only discussed the relationship between NDVI and biomass of two species of coniferous plantations, namely, Pinus massoniana Lamb and Pinus elliottii Engelm, but also introduced the biomass models based on NDVI. The comparison between measured biomass in Qianyanzhou and biomass derived from CBERS-02.CCD data showed that it is feasible to estimate biomass based on NDVI. But its limitations cannot be ignored. This kind of model depends on the dominant vegetation species. There are some effect factors in estimating biomass based on NDVI. This paper analyzes these factors based on fine-resolution CBERS-02.CCD data and some conclusions are drawn: In Qianyanzhou, the area with good vegetation coverage, the nonlinearity of NDVI has little influence on scaling-up of NDVI. As a result of surface heterogeneity, scaling-up can cause NDVI within each pixel to change. Because scaling-up can cause pixel attribute to change, the applicability of biomass model is one of the sources of error in estimating biomass.

关键词： NDVI biomass scaling effect scaling-up.

A zooarchaeological study of bone assemblages from the Ma'anshan Paleolithic site

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Science china Earth sciences 2010年第3期53卷 395-402页

作者： ZHANG Yue1,2.3, WANG ChunXue1,2. ZHANG ShuangQuan1,2.& GAO Xing1,2.1 institute of Vertebrate Paleontology and Paleoanthropology, chinese academy of sciences, Beijing 100044 2.Joint {2. of Human Evolution and Archaeometry, chinese academy of sciences, Beijing 100044 3 State key {2. of Palaeobiology and Stratigraphy, Nanjing 2.0008 1. institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China2. Joint Laboratory of Human Evolution and Archaeometry Chinese Academy of Sciences Beijing 100044 China3. State Key Laboratory of Palaeobiology and Stratigraphy Nanjing 210008 China

Ten thousands of bone fragments were recovered from the Ma’anshan Paleolithic site, of which 4358 pieces can be identified to skeletal elements or species. In this research, the bone assemblages are quantified based on elements of MNI, MNE, and MAU. Then bone surface modifications and skeletal element profiles of the bone assemblages are studied to understand shlepping behaviors and reveal the technique of disarticulating and defleshing the animals’ bodies, etc. Based on the analyses of bone assemblages and the comparative study with the ethnoarchaeological as well as experimental data, it is assumed that later hominids at the site made fuller use of the game animals than the earlier hominids. Incorporating the lines of evidence from chronological dating, paleoenvironment, and polished bone tools between the two cultural layers, here we propose three hypotheses suggesting that the changes of environment, the migrations of the hominids from the North, or the demographic pulses may cause such a behavioral difference. However, it is yet to be determined which hypothesis can better explain the changes.

关键词： Ma’anshan site zooarchaeology Paleolithic hominid behavior

Nitrogen isotopic composition of plant-soil in the Loess Plateau and its responding to environmental change

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chinese Science Bulletin 2009年第2期54卷 272-279页

作者： LIU WeiGuo1,2.& WANG Zheng1,3 1 State key laboratory of Loess and Quaternary {2., institute of Earth Environment, chinese academy of sciences, Xi’an 710075, china 2.Xi’an Jiaotong University, School of Human Settlement and Civil Engineering, Xi’an 710049, china 3 Graduate University of chinese academy of sciences, Beijing 100049, china chinese Acad Sci Inst Earth Environm State Key Lab Loess and Quaternary Geol Xian 710075 Peoples R China.

The nitrogen isotope of soil is of emerging significance as an indicator of climatic change and biogeochemical cycle of nitrogen in nature systems. In this paper, the nitrogen content and isotopic composition of modern ecosystems from arid and semiarid Loess Plateau in northwestern china, including plant roots and surface soil, were determined to investigate trends in δ15N variation of plant roots and soil along a precipitation and temperature gradient in northwestern china under the East Asian Monsoon climate condition. The δ15N values of surface soil from the study area vary from ?1.2. to 5.8‰, but from -5.1‰ to 1.9‰ in the plant roots. Our results indicate that (1) although the isotopic compositions of both plant roots and surface soil change with a similar trend along the climate gradient, the apparent nitrogen difference between plant roots and soil existed, with -δ15N values ranging from 0.3‰ to 7.2. with average of 4.1‰; and (2. mean annual precipitation (MAP) is the dominant factor for isotopic composition of plant-soil nitrogen in the Loess Plateau, and the δ15N values are less correlated with MAT; we suggest that nitrogen isotopic composition of soil is a potential tracer for environmental changes.

关键词：氮同位素物理性质化学性质环境论

Petrology and ^(40)Ar/^(39)Ar iso-topic ages of blueschists in Gangmar, central Qiangtang, northern Tibet

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chinese Science Bulletin 2001年第5期46卷 423-427页

作者： DENG Xiguang, DING Lin, LIU Xiaohan & ZHOU Yonglaboratory of Lithospheric Tectonic Evolution, institute of geology and geophysics,{2., Beijing 10002., china laboratory of Lithospheric Tectonic Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China

The petrology and mineral assemblages of blueschists in the Gangmar, central Qiangtang, northern Tibet were examined, which indicates that the metamorphic condition is high-pressure low-temperature. In this note, we reported the 40Ar/39Ar dating results of glaucophane from two blueschist samples. Their apparent ages are (2.5.0±1.3) Ma and (2.7.6±2.3) Ma and similar isochron ages are (2.5.0±0.9) Ma and (2.2.4±0.8) Ma, respectively. These iso-topic datings show the high-pressure metamorphism occurring in Lower Permian. The ages also coincide with the evolution of Palaeo-Tethys ocean in Late Palaeozoic.

关键词： glaucophane blueschist 39Ar/40Ar age Palaeo-Tethys Gangmar northern Tibet.