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中国科学院地质与地球物理研究所2.03学术年会

作者： Mingguo Zhai~(1*),Ji’an Shao~2.Jie Hao~1 and Peng Peng~1 1 Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,chinese academy of {2.,beijing,10002., china, 2.Department of Geology,Peking university,beijing,china

Recent studies suggest that the South china Block(SCB) was located at a central position in the Neoproterozoic supercontinent Rodinia between ca.1000 Ma and 800 Ma,but fewer studies dealt with the North china Block(NCB) in the reconstruction of *** NCB was suggested,in general,to be in a stable cratonic setting from ca.1650 Ma to ca.160-140 *** recent study suggests that there were two metamorphic-magmatic events at～1300-1000 Ma and～800-650 Ma in the *** these events were weak,they have been regarded as marking the assembly(Grenville- age orogenic event) and breakup(Neoproterozoic mafic dyke swarm and granitoid intrusive) of the supercontinent Rodinia.A possible Grenvillian ophiolite or convergent margin complex in the NCB exists only in the North Qinling end-Mesoprotcrozoic orogenic *** major mcta-volcanic-scdimcntary rocks in this complex belong to the Kuanping Group and are associated with gabbros and serpentinized *** and post-collisional granites have been recognized along the North Qinling *** and sedimentary rocks along northern margin of the NCB indicate possible continent rift or continental margin *** main rock associations of ca.～800-650 Ma are mafic dyke swarms withε(t) values of enriched ***,this paper suggests that the mafic dykes were possibly related to the breakup of the Rodinian *** tectonostratigraphic constraints and palaeomagnetic reconstruction show that the Proterozoic NCB was different from the SCB,but somewhat similar to *** above features possibly suggest that the NCB,as part of the supercontinent Rodinia,was possibly located in a marginal location not directly connected to the SCB,but likely adjacent to the Siberian Craton.

关键词： North china Baiyan Obo belt North Qinling belt supercontinent Rodinia Grenvillian in china

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Molecular Detection and Breeding of Tomato Yellow Leaf Curl Virus

Molecular Detection and Breeding of Tomato Yellow Leaf Curl ...

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第十三届全国植物基因组学大会

作者： Ming Zhou~1,Hailong Yu~1,Chuanyou Li~2.Changbao Li~(1*) 1 beijing Vegetable Research Center,beijing {2. of Agriculture and Forestry Science, beijing 100097,china 2.Institute of Genetics and Developmental Biology,chinese {2. of sciences,beijing 100101,china

Tomato yellow leaf curl virus(TYLCV) is currently considered as one of the most devastating viruses in cultivated tomatoes(Solanum lycopersicum) *** reported here the development of a PCR-based method to quickly detec...

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半干旱区土地利用方式变化对生态系统碳储量的影响

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生态学杂志 2009年第12期28卷 2424-2430页

作者：张新厚范志平孙学凯胡亚林曾德慧王琼中国科学院沈阳应用生态研究所大青沟沙地生态实验站沈阳110016 中国科学院研究生院北京100049 辽宁大学环境学院沈阳110036

土地利用方式变化对生态系统碳储量具有重要影响,评价不同土地利用方式下陆地生态系统的碳获取能力有助于制定生态系统管理策略,对适应和减缓全球气候变化具有重要的意义。本文以科尔沁地区沙质草地、樟子松-山杏疏林草地、杨树防护林... 详细信息

土地利用方式变化对生态系统碳储量具有重要影响,评价不同土地利用方式下陆地生态系统的碳获取能力有助于制定生态系统管理策略,对适应和减缓全球气候变化具有重要的意义。本文以科尔沁地区沙质草地、樟子松-山杏疏林草地、杨树防护林带为对象,量化了不同土地利用方式变化对生态系统碳储量及其分配的影响。结果表明,沙质草地转变为樟子松-山杏疏林草地和杨树防护林带后地上部分碳储量分别为以平均0.17和***-2.a-1的速率增加;沙质草地、樟子松-山杏疏林草地和杨树防护林带的根系碳储量依次为1.382.1.706和***-2.土壤碳储量依次为2..11、2..2.和***-2.沙质草地转变为杨树防护林带后根系碳储量和土壤碳储量增加,平均速率分别为1.07和***-2.a-1;3种土地利用方式的有机碳含量?储量在不同层次土壤之间变异程度不同,相对而言疏林草地变异程度最小。总体来看,3种土地利用方式总碳储量依次为杨树防护林带(***-2.、樟子松-山杏疏林草地(***-2.、沙质草地(***-2.。

关键词：疏林草地防护林带沙质草地土地利用变化碳储量

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Ternary geochemical-tracing system in natural gas accumulation

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Science china Earth sciences 2007年第10期50卷 1494-1503页

作者： LIU WenHui1,2., CHEN MengJin3, GUAN Ping4, ZHENG JianJing2. JIN Qiang5, LI Jian6, WANG WanChun2. HU GuoYi3, XIA YanQing2.& ZHANG DianWei2.1 Exploration & Production Research Institute, SINOPEC, beijing 100083, china 2.Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, {2. academy of sciences, Lanzhou 730000, china 3 Research Institute of Petroleum Exploration & Production, Petrochina, beijing 100083, china 4 School of Earth and Space sciences, Peking university, beijing 100871, china 5 china university of Petroleum (East china), Dongying 2.7062.,china 6 Longfang Branch, Research Institute of Petroleum Exploration & Production, Petrochina, Longfang 065007, china Exploration & Production Research Institute SINOPEC Beijing 100083 China Research Institute of Petroleum Exploration & Production PetroChina Beijing 100083 China School of Earth and Space sciences Peking University Beijing 100871 China Key Laboratory of Gas Geochemistry Institute of Geology and Geophysics Chinese Academy of Sciences Lanzhou 730000 China china university of Petroleum (East{2.) Dongying 257062 China Longfang Branch Research Institute of Petroleum Exploration & Production PetroChina Longfang 065007 China

The establishment of geochemical-tracing system of gas generation and accumulation is helpful to re-elucidating the gas migration and accumulation in time and space. To deduce the complex process of gas accumulation, a ternary geochemical-tracing system is set up, according to stable isotope inheritance of source rocks, kinetic fractionation of stable isotopes, time-accumulating effect of noble gas isotopes, mantle-derived volatile inheritance, and organic molecule inheritance of light hydrocarbons and thermally kinetic fractionation in their generation, in combination with the previous achievements of gas geochemistry and geochemical parameters of gas-source correlation. There are tight interactions for the geochemical parameters with much information about parent inheritance and special biomarkers, in which they are confirmed each other, reciprocally associated and preferentially used for the requirement so that we can use these geochemical parameters to effectively demonstrate the sources of natural gas, sedimentary environments and thermal evolution of source rocks, migration and accumulation of natural gas, and rearrangement of natural gas reservoirs. It is necessary for the ternary geochemical-tracing system to predict the formation of high efficient gas reservoir and their distribution in time and space.

关键词： stable isotope, noble gas, light hydrocarbon, tracing system, sources of natural gas

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The Study on Financial Supervision for chinese Financial Industry under Mixed Operation

The Study on Financial Supervision for Chinese Financial Ind...

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2.10 International Conference on Management Science (ICMS 2.10)

作者： Song Wei Institute of Economics chinese academy of Social {2. beijing china

Financial mixed operation refers to that financial institution can offer all financial services（banking,securities,insurance,and trust） and engage in industrial businesses by holding the share *** of self interests,risk diversification,the change of competition condition,and clients’ needs of the diversity of financial products and services,commercial banks make it possible for the mixed operation to be the optimal choice of the banking businesses under dynamic conditions in globalized competition,which results in the diversity and integration of banking businesses.

关键词： finance supervision mixed operation risk guard

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The existing time of Sihetun vertebrate in western Liaoning,china——Evidence from U-Pb dating of zircon

The existing time of Sihetun vertebrate in western Liaoning,...

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中国科学院地质与地球物理研究所2.01学术年会

作者： WANG Songshan~1,WANG Yuanqing~2. HU Huaguang~1 & LI Huimin~3 1.Institute of Geology and Geophysics,chinese academy of {2., beijing 10002.,china 2.Institute of Vertebrate Paleontology and Paleoanthropology,chinese academy of {2.,beijing 100044,china 3.Tianjin Institute of Geology and Mineral Resources,Tianjin 300170, china

In different opinions,the stratigraphic time of the feathered dinosaurs and eariy birds in Sihetun and its neighboring areas in Beipiao,western Liaoning is appointed to different epoches of eras,such as Late Jurassic,Early Cretaceous and Late Jurassic-Early *** the recently dating data are still very different This note first reported the U-Pb age of(12..2.0.9) Ma ofzircon separated from tuff of Sihetun vertebrates *** age reveals that Sihetun vertebrate belongs to Early *** method is more objective,because of the strong ability of disturbance resistance and high U-Pb blocking temperature of zircons.

关键词： Sihetun vertebrates tuff zircon U-Pb dating

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Lightning activity and precipitation structure of hailstorms

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Science china Earth sciences 2007年第4期50卷 629-639页

作者： FENG GuiLi1,2. QIE XiuShu3,1, YUAN Tie1 & NIU ShuZhen4 1 Laboratory of Lightning and Thunderstorm, Cold and Arid Regions Environmental and Engineering Research Institute, chinese academy of {2., Lanzhou 730000, china 2.Shandong Research Institute of Meteorology, Jinan 2.0031, china 3 Institute of Atmospheric Physics, chinese academy of {2., beijing 10002., china 4 The Meteorological Observatory of Henan Province, Zhengzhou 450003, china Laboratory of Lightning and Thunderstorm Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of SciencesLanzhou 730000China Shandong Research Institute of Meteorology Jinan 250031China Institute of Atmospheric PhySics Chinese Academy of SciencesBeijing 100029China Laboratory of Lightning and Thunderstorm Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of SciencesLanzhou 730000China Laboratory of Lightning and Thunderstorm Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of SciencesLanzhou 730000China The Meteorological Observatory of Henan Province Zhengzhou 450003China

By using the cloud-to-ground (CG) lightning location data from the lightning detection network of He- nan Province, surface Doppler radar data and standard orbit data of PR, TMI and LIS on TRMM satellite, the spatial and temporal characteristics of CG lightning flashes in 10 severe hailstorms are analyzed. The results show that the percentage of +CG lightning in these hailstorms is high with an average value of 45.5%. There is a distinct increase in CG flash rate during the rapid development stage of hailstorms. The hailstone falling corresponds to an active positive flash period, and the increase of +CG flash rate is generally accompanied with a decrease of –CG flash rate. The flash rate declines rapidly during the dissipating stage of hailstorms. The precipitation structure and lightning activity in two typical hail- storms are studied in detail. It is found that strong convective cells with reflectivity greater than 30dBZ mainly are situated in the front region of hailstorms, whereas the trailing stratiform region is in the rear part of the hailstorms. The maximum heights of echo top are higher than 14 km. Convective rain con- tributes much more rainfall to the total than stratiform rain, and the convective rain takes about 85% and 97% of the total in the two cases, respectively. Total lightning in the hailstorms is very active with the flash rate up to 183 fl/min and 55 fl/min, respectively. The results also indicate that most lightning flashes occurred in the echo region greater than 30 dBZ and its immediate periphery. The probability of lightning occurrence is 2. times higher in the convective region than in the stratiform region. The result suggests that the lightning information is helpful to the identification of convective rain region. The linear relationship between flash rate and ice water content is disclosed primarily.

关键词： total lightning activity positive CG lightning hailstorm convective rain ice water content

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A way to realize the wide field of view pushbroom hyperspectral imager

A way to realize the wide field of view pushbroom hyperspect...

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2.th Congress of the International Commission for Optics

作者： Peixin Hu1 2.Qimin Lu1 2.Yuwei Cheng1 Rong Shu1 Jianyu Wang11 Shanghai Institute of Technical Physics chinese academy of {2. Shanghai china 2.0083 2.Graduate School of the chinese academy of {2. beijing china 100039

Because of long integral time and simple structure, pushbroom hyperspectal imager was paid more attentions in remote sensing field. But its field of view (FOV) is affected by the sensor so that pushbr

关键词： wide field of view mosaic hyperspectral imager airborne

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Paleoclimatic significance of mineral magnetic properties of loess sediments in northeastern Qinghai-Tibetan Plateau

Paleoclimatic significance of mineral magnetic properties of...

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中国科学院地质与地球物理研究所2.03学术年会

作者： WANG Xiaoyong~1,LU Huayu~1,LI Zhen~2. DENG Chenglong~3,TAN Hongbing~4 & SONG Yougui~1 1.State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,chinese academy of {2.,Xi’an 710075, china 2.Department of Geography,Qinghai Normal university,Xining 810008, china 3.Paleomagnetism Laboratory,Institute of Geology and Geophysics, chinese academy of {2.,beijing 10002.,china 4.Institute of Saline Lake,chinese academy of {2.,Xining 810008,china

Loess deposit in the northeastern Qing-hai -Tibetan Plateau offers an excellent record of climate and environment changes in this *** have conducted multiparameter mineral magnetic analyses of samples of loess deposits from the Dongchuan,Lalakou and Panzishan sections. The methods used include magnetic susceptibility,frequency -dependent susceptibility,temperature-dependent susceptibility,isothermal remanent magnetization acquisition, and magnetic hysteresis *** results reveal that magnetite is the dominant contributor to magnetic susceptibility. Maghemite and hematite is also present in the loess layers and paleosol *** higher concentration of maghemite in paleosols suggests that the formation of maghemite occurred during in situ pedogenesis,which plays an important role in the enhancement of the magnetic susceptibility. Similar to that in the chinese Loess Plateau lying to the east of the Liupan Mountains,magnetic granulometry in the studied loess and paleosols is predominantly pseudo-single-domain(PSD).However,the mean grain-size of the ferrimagnetic minerals in loess is evidently coarser (larger PSD and multidomain-like) than in paleosols(mainly PSD).The magnetic susceptibility of loess and paleosols is positively correlated with the content of ultrafine magnetite /maghemite grains,and hence with the intensity of in situ ***,the enhanced magnetic susceptibility in the studied loess-paleosol sequences can be interpreted as being due to climatically induced in situ pedogenesis.

关键词： mineral magnetism loess-paleosol Qinghai-Tibetan Plateau magnetic susceptibility

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Nontrivial homoclinic orbits for second-order singular and periodic Hamiltonian systems

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chinese Science Bulletin 1999年第2期44卷 123-129页

作者： LI Chengyue , FAN Tianyou TONG MingshengResearch Center of Materials Science, beijing Institute of Technology, beijing 100081,{2. Department of Mathematics, Central university for Nationalities, beijing 100081,{2. Computer Center, beijing Institute of Technology, beijing 100081,{2. Research Center of Materials Science Beijing Institute of Technology Beijing China Department of Mathematics Central University for Nationalities Beijing China Computer Center Beijing Institute of Technology Beijing China

The existence of nontrivial homoclinic orbits of periodic Hamiltonian systems: is proved, where q=（q1,q2.’',qn）, n>2. V（t, q）:R1×Rn\{e}→R1 is a potential With a singularity, i.e. -V（t, q）→+∞, as q→e. The m... 详细信息

The existence of nontrivial homoclinic orbits of periodic Hamiltonian systems: is proved, where q=（q1,q2./sub>,’',qn）, n>2. V（t, q）:R1×Rn\{e}→R1 is a potential With a singularity, i.e. -V（t, q）→+∞, as q→e. The main assumptions are Gordon-strong force condion and the uniqueness of a global maximum of V（t, q）.

关键词： Hamiltonian systems strong force condition homoclinic orbit.

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