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First discovery of fossil Diplothrix (Muridae, Rodentia) outside the Ryukyu Islands, Japan

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chinese Science Bulletin 2010年第4期55卷 411-417页

作者： WANG Yuan1,2, JIN ChangZhu1 & WEI GuangBiao3,41 Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, chinese academy of sciences, beijing 100044, china 2 graduate university of chinese academy of sciences, beijing 100049, china 3 Chongqing Three Gorges Institute of Paleoanthropology, china Three Gorges Museum, Chongqing 400015, china 4 Chongqing Three Gorges Culture and Social Development Research Institute, Chongqing Normal university, Chongqing 400047, china Key Laboratory of Evolutionary Systematics of Vertebrates Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing China graduate university of chinese academy of sciences Beijing China Chongqing Three Gorges Institute of Paleoanthropology China Three Gorges Museum Chongqing China Chongqing Three Gorges Culture and Social Development Research Institute Chongqing Normal University Chongqing China

The first Diplothrix (Muridae, Rodentia) fossils of the early Early Pleistocene are described as D. yangziensis sp. nov., which were collected from the Renzidong Cave deposits in Anhui Province, Eastern china. Diplothrix was previously represented by a single species, D. legata, whose geographical distribution during the Late Pleistocene is restricted to the Ryukyu Islands, Japan. With straight chevrons on M1, distinct t3 and t9 on upper molars, primitive M3, mlc on m1, and developed a-lab on m2 and m3, the new species is morphologically distinct from other large murids in East Asia, and should belong to the genus Diplothrix. There are also differences in molar morphology between the new species and D. legata, the type species of Diplothrix, as well as other known fossils. For example, D. yangziensis sp. nov. has a smaller size, a more elongated crown, developed precingulum and pc on M1, more primitive M3, weaker mlc and more primitive pc on m1, and stronger plc and pc on m3. In short, Diplothrix yangziensis sp. nov. is evidently more primitive than D. legata, suggesting that the former is likely the ancestor of the latter. Diplothrix yangziensis sp. nov. is the first discovery of the genus outside the Ryukyu Islands, Japan and is also the earliest and most primitive species of the genus in Eurasia. Its discovery has significant implications for reconstructing the evolution and dispersal pattern of Diplothrix, as well as for discussing its palaeoecological variation.

关键词：琉球群岛化石日本鼠科形态差异供应量早更新世中国东部

Ecological-sedimentary zonations and carbonate deposition,Xiaodonghai Reef Flat,Sanya,Hainan Island,china

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Science china Earth sciences 2011年第3期54卷 359-371页

作者： WANG Yue1,2, SHEN JianWei1 & LONG JiangPing3 1 Department of Marine Geology, South china Sea Institute of Oceanology CAS Key Laboratory of Marginal Sea Geology, South china Sea Institute of Oceanology, chinese academy of sciences, Guangzhou 510301, china 2 graduate university of chinese academy of sciences, beijing 100049, china 3 The Second Institution of Oceanography, State Oceanic Administration, Hangzhou 310012, china Department of Marine Geology South China Sea Institute of Oceanology Guangzhou China graduate university of chinese academy of sciences Beijing China CAS Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China The Second Institution of Oceanography State Oceanic Administration Hangzhou China

Modern fringing reefs are developed on the intertidal to subtidal area of Xiaodonghai bay, Sanya, Hainan Island. The reef flat extends several dozen meters toward the sea. Various ecological and sedimentary zonations can be distinguished, including, from land to sea, beachrocks, large massive corals, inner reef flat, outer reef flat, and fore-reef slope. The carbonate sediments and constituent hermatypic coral communities are different in these zones. The beachrocks are composed mainly of biological sands, including coral skeletons, algae, gastropods, bivalves, and benthic foraminifera. Quartz sands are less common in this zone. Carbonate diagenesis in beachrocks is characterized by early cementation. The fringing reef flat is progradationally developed toward the sea. Large massive corals grew in the zone next to the beachrocks. These corals are large, flat-toped, and autochthonous in the production of bioclastic grains and lime mud. Large and massive coral skeletons are surrounded by coral skeletal grains, bioclasts, and lime-mud sediments. The inner reef flat consists mainly of skeletons of branching corals that are covered by bioclasts and lime mud, and living corals are mostly massive in form. Statistical analysis of coral-community dynamics shows that the outer reef flat with strong waves is the most suitable place for hermatypic corals to flourish. There, the living corals are most densely distributed. Both massive corals and branching corals (e.g., Acropora corymbosa) are exceptionally healthy in this zone. Bioclasts and lime mud are washed out due to strong wave action. Microbial carbonates generally are deposited within cavities of the beachrocks and coral skeletal cavities and on the surfaces of bioclastic grains. The latter two types, however, are more common. Ecological-sedimentary zonations across the Xiaodonghai reef flat from beachrocks to outer reef flat are controlled by variations in wave strength and water energy. Microbial carbonates rarely deve

关键词：碳酸盐沉积海南岛分带生态东海三亚造礁石珊瑚生物碎屑

Properties of the 3/2^-[521] band in the odd-N rare-earth nuclei

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Science china(Physics,Mechanics & Astronomy) 2011年第S1期54卷 37-43页

作者： CHEN Liang1,2, ZHOU XiaoHong1,2, ZHANG YuHu1, ZHANG ShuangQuan3 & ZHU LiHua4 1Institute of Modern Physics, chinese academy of sciences, Lanzhou 730000, china 2graduate university of chinese academy of sciences, beijing 100049, china 3State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking university, beijing 100871, china 4china Institute of Atomic Energy, beijing 102413, china Institute of Modern Physics Chinese Academy of Sciences Lanzhou China graduate university of chinese academy of sciences Beijing China State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing China china Institute of Atomic Energy Beijing China

High-spin states in 161Er have been studied experimentally via the 150Nd(16O, 5n) reaction at a beam energy of 86 MeV. Three rotational bands built on the 5/2+[642], 3/2-[521], and 11/2-[505] configurations have been extended up to high-spin states, and particularly, the α = -1/2 branch of the ground state 3/2-[521] band has been revised significantly. It is found that signature inversion occurs in the 3/2-[521] band after the band crossing in 161Er. The systematics of the signature inversion associated with the 3/2-[521] configuration in the rare-earth region is discussed. The band properties are analyzed within the framework of a triaxial particle-rotor model, and a triaxial deformation is proposed to the 3/2-[521] band.

关键词： high-spin states signature inversion triaxial particle-rotor model

Simulating Carbon Sequestration and GHGs Emissions in Abies fabric Forest on the Gongga Mountains Using a Biogeochemical Process Model Forest-DNDC

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Journal of Mountain Science 2008年第3期5卷 249-256页

作者： LU Xuyang CHENG Genwei XIAO Feipeng HUO Changfu Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China graduate university of the chinese academy of sciences Beijing 100049 China

The process-oriented model Forest-DNDC describing biogeochemical cycling of C and N and GHGs (greenhouse gases) fluxes (CO2, NO and N2O) in forest ecosystems was applied to simulate carbon sequestration and GHGs emissions in Abies fabric forest of the Gongga Mountains at southeastern edge of the Tibetan Plateau. The results indicated that the simulated gross primary production (GPP) of Abies fabric forest was strongly affected by temperature. The annual total GPP was 24,245.3 kg C ha-1 yr-1 for 2005 and 26,318.8 kg C ha-1 yr-1 for 2006, respectively. The annual total net primary production (NPP) was 5,935.5 and 4,882.2 kg C ha-1 yr-1 for 2005 and 2006, and the annual total net ecosystem production (NEP) was 4,815.4 and 3,512.8 kg C ha-1 yr-1 for 2005 and 2006, respectively. The simulated seasonal variation in CO2 emissions generally followed the seasonal variations in temperature and precipitation. The annual total CO2 emissions were 3,109.0 and 4,821.0 kg C ha-1 yr-1 for 2005 and 2006, the simulated annual total N2O emissions from forest soil were 1.47 and 1.36 kg N ha-1 yr-1 for 2005 and 2006, and the annual total NO emissions were 0.09 and 0.12 kg N ha-1 yr-1 for 2005 and 2006, respectively.

关键词：贡嘎山森林覆盖率二氧化碳含量 GHGs

Optical results of the black hole microquasar SS 433

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Science china(Physics,Mechanics & Astronomy) 2010年第S1期53卷 153-156页

作者： LI Hui1,2 & YAN JingZhi1,3 1 Purple Mountain Observatory,chinese academy of sciences,Nanjing 210008,china 2 graduate university of chinese academy of sciences,beijing 100049,china 3 Service d’Astrophysique,CEA Saclay and university Paris Diderot,91191 Gif-sur-Yvette,France Purple Mountain Observatory Chinese Academy of Sciences Nanjing China graduate university of chinese academy of sciences Beijing China Service d’Astrophysique CEA Saclay and University Paris Diderot Gif-sur-Yvette France

We present optical spectroscopic observations of SS 433 during different precessional and orbital *** 2004,2007 and 2008 data provide us a good chance to study the variability of the Hα line at different orbital phases for nearly the same disk *** data show that the Hα of SS 433 usually had a symmetric profile between orbital phases 0.25-0.75,while an asymmetric structure with a strong red peak was observed for other orbital *** suggest that the orbital variability of Hα emission is connected with accretion flow from the donor star to the accretion *** addition,we attribute the dramatic increase of Hα emission during our 2007 observational run,which had a time scale of one day,to the emergence of strong jets.

关键词： high-mass X-ray binary black hole spectroscopy outflow wind relativistic jet

Assessment of Point and Nonpoint Sources Pollution in Songhua River Basin,Northeast china by Using Revised Water Quality Model

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chinese Geographical Science 2010年第1期20卷 30-36页

作者： YANG Yuhong YAN Baixing SHEN Wanbin Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun 130012 China graduate university of chinese academy of sciences beijing 100049 China College of Environment and Resources Jilin university Changchun 130012 China

Individual participation of pollutants in the pollution load should be estimated even if roughly for the appropriate environmental management of a river *** is difficult to identify the sources and to quantify the load, especially in modeling nonpoint *** this study a revised model was established by integrating point and nonpoint sources into one-dimensional Streeter-Phelps(S-P) model on the basis of real-time hydrologic data and surface water quality monitoring data in the Jilin Reach of the Songhua River *** oxygen demand(COD) and ammonia nitrogen(NH 3-N) loads were *** showed that COD loads of point source and nonpoint source were 134 958 t/yr and 86 209 t/yr, accounting for 61.02% and 38.98% of total loads, *** 3-N loads of point source and nonpoint source were 16 739 t/yr and 14 272 t/yr, accounting for 53.98% and 46.02%, *** source pollution was stronger than nonpoint source pollution in the study area at *** water quality of upstream was better than that of downstream of the rivers and *** is indispensable to treat industrial wastewater and municipal sewage out of point sources, to adopt the best management practices to control diffuse pollutants from agricultural land and urban surface runoff in improving water quality of the Songhua River *** revised S-P model can be successfully used to identify pollution source and quantify point source and nonpoint source loads by calibrating and validating.

关键词：松花江流域污染水质模型修改东北地区非点源污染评价源点中国

Response of Regeneration Diversity of Carex Lasiocarpa Community to Different Water Levels in Sanjiang Plain,china

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chinese Geographical Science 2010年第1期20卷 37-42页

作者： WANG Li SONG Changchun HU Jinmin YANG Tao Northeast Institute of Geography and Agroecologv Chinese Academy of Sciences Changchun 130012. China graduate university of Chinese Academy of Sciences Beijing 100049 China Asian International Rivers Center. Yunnan university Kunming 650091 China

The species diversity at the regeneration stage, inflenced by different water levels, is important for community composition in the later growing *** diversity of Carex lasiocarpa community under different water levels was studied at two stages, recruitment and adult, in the Sanjiang Plain, Heilongjiang Province, *** results showed that, at the two growing stages, important value of *** population and species richness of the community decreased with the increasing water level, while the Simpson and Shannon-Wiener diversity indexes and Pielou evenness index *** different water levels, community diversities were higher at the recruitment stage, while population important values of *** were higher at the adult *** in vegetation evaluation must be chosen prudentially for successful restoration and effective management of wetlands, and especially for wetland restoration, the optimal time should be selected according to the restoration objectives and costs.

关键词：群落多样性水位下降三江平原毛果苔草再生中国物种多样性社会构成

Quantitative estimation of the shrub canopy LAI from atmosphere-corrected HJ-1 CCD data in Mu Us Sandland

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Science china Earth sciences 2010年第S1期53卷 26-33页

作者： CHEN Wei1,2,CAO ChunXiang1,HE QiSheng1,2,GUO HuaDong3,ZHANG Hao1,2,LI RenQiang4,ZHENG Sheng1,2,XU Min1,2,GAO MengXu1,2,ZHAO Jian1,2,LI Sha1,NI XiLiang1,2,JIA HuiCong1,JI Wei1,TIAN Rong1,2,LIU Cheng1,2,ZHAO YuXing5 & LI JingLu6 1 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 2 graduate university of chinese academy of sciences,beijing 100049,china 3 Center for Earth Observation and Digital Earth,chinese academy of sciences,beijing 100190,china 4 china Key Laboratory of Ecological Network Observation and Modeling,Institute of Geographical sciences and Natural Resources Research,chinese academy of sciences,beijing 100101,china 5 Ordos Forestry Sand Control Science Institute,Dongsheng 017000,china 6 Inner Mongolia Biomass Thermoelectricity Limited Company,Wushen 017300,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 China graduate university of chinese academy of sciences Beijing China Center for Earth Observation and Digital Earth Chinese Academy of Sciences Beijing China china Key Laboratory of Ecological Network Observation and Modeling Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing China Ordos Forestry Sand Control Science Institute Dongsheng China Inner Mongolia Biomass Thermoelectricity Limited Company Wushen China

The leaf area index(LAI) is an important ecological parameter that characterizes the interface between vegetation canopy and the *** addition,it is used by most process-oriented ecosystem *** paper investigates the potential of HJ-1 CCD data combined with linear spectral unmixing and an inverted geometric-optical model for the retrieval of the shrub LAI in Wushen Banner of Inner Mongolia in the Mu Us ***(Moderate Resolution Atmospheric Radiance and Transmittance Model) was used for atmospheric *** was extracted using the threshold of the normalized difference vegetation index,with which water bodies and farmland were separated,in combination with a vegetation map of the People's Republic of china(1:1000000).Using the geometric-optical model,we derive the per-pixel reflectance as a simple linear combination of two components,namely sunlit background and *** fraction of sunlit background is related to the shrub *** the support of HJ-1 CCD data,we employ linear spectral unmixing to obtain the fraction of sunlit background in an atmospherically corrected HJ *** addition,we use the measured shrub canopy structural parameters for shrub communities to invert the geometric-optical model and retrieve the pixel-based shrub *** total,18 sample plots collected in Wushen Banner of Inner Mongolia are used for *** results of the shrub LAI show good agreement with R2 of 0.817 and a root-mean-squared error of 0.173.

关键词： shrub leaf area index inversion HJ-1 data geometric-optical model MODTRAN Mu Us Sandland

CO_2 Emission Induced by Urban Household Consumption in china

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chinese Journal of Population,Resources and Environment 2009年第3期7卷 11-19页

作者： Wang Yan1,2,3,Shi Minjun1,2 1.graduate university of chinese academy of sciences,beijing 100049,china 2.Research Center on Fictitious Economy and Data Science,CAS,beijing 100190,china 3.Communications university of china,beijing 100024,china graduate university of chinese academy of sciences Beijing 100049 China Research Center on Fictitious Economy and Data Science CAS Beijing 100190 China Communications university of china Beijing 100024 China

Household consumption is one of the important factors that induce CO2 *** on input-output model,this article calculated the intensity of CO2 emission of different income groups and seven provinces in china,and then estimated total CO2 emission induced by urban household consumption from 1995 to 2004 in china based on statistic data of household living *** results show that CO2 emission per capita induced by household consumption had increased from 1583 to 2498 kg CO2 during *** ratio of consumption-induced CO2 emission to total CO2 emission had risen from 19% to 30% in the past *** CO2 emission accounted for an important part of the consumption-induced emission,the ratio of indirect emission to consumption-induced emission had risen from 69% to 79% during the same period.A significant difference in consumption-induced CO2 emission across different income groups and different regions has been ***2 emission per capita of higher income groups and developed regions increased faster than that of lower income groups and developing *** lifestyle has driven significant increase in CO2 ***,increases in private transport expenditure(for example,vehicle expenditure) and house building expenditure are key driving factors of growth in consumption-induced CO2 *** are big differences in the amount of CO2 emission induced by change in lifestyle across different income groups and *** can be expected that lower income households and developing regions will increase consumption to improve their livings with income growth in the future,which may induce much more CO2 emission.A reasonable level of CO2 emission is necessary to satisfy human needs and to improve living standard,but a noticeable fact is that CO2 emission per capita induced by household consumption in developed areas of china had reached a quite high *** in lifestyle towards a low-carbon society is in urgent ne

关键词：资源二氧化碳城市环境大气污染