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Land c.ver c.anges based on {2.ant suc.essions: Deforestation, rehabilitation and degeneration of forest in the u{2.er Dadu River watershed

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science c.ina Earth sciences 2005年第12期48卷 2214-2230页

作者： YAN Jianzhong1,2,3, ZHANG Yili1, BAI Wanqi1, LIU Yanhua4. BAO Weikai5. LIU Linshan1, 2 & ZHENG Du1 1. Institute of Geograp.ic.sciences and Natural Resourc.s Researc., c.inese Ac.demy of sciences, Beijing 100101, c.ina 2. Graduate Sc.ool of the c.inese Ac.demy of sciences, Beijing 100039, c.ina 3. c.llege of Resourc.s and Environment, Southwest Agric.ltural University, c.ongqing 4.0716, c.ina 4. the ministry of science and technology, p. c. c.ina, Beijing {4. c.ina 5. c.engdu Institute of Biology, c.inese Ac.demy of sciences, c.engdu 61004., c.ina 1. Institute of Geograp.ic.{2.s and Natural Resourc.s Researc. Chinese Academy of Sciences 100101 Beijing China 2. Graduate Sc.ool of the c.inese Ac.demy of sciences 100039 Beijing China 3. c.llege of Resourc.s and Environment Southwest Agricultural University 400716 Chongqing China 4. the ministry of science and technology P. C. China 100862 Beijing China 5. c.engdu Institute of Biology Chinese Academy of Sciences 610041 Chengdu China

To link regional land use/c.ver c.anges with environmental effec.s, land c.ver c.anges are required to reflec. vegetation suc.essions, whereas the land c.ver c.assific.tion systems c.mmonly used nowadays c.nnot serve this {12.r{12.se. In this {12.{12.r, a new land c.ver c.assific.tion system is established in whic. land c.vers are c.assified by the vegetation suc.es-sions, taking Zamtang c.unty, Barkam c.unty and Jinc.uan c.unty in the u{12.er Dadu River watershed as a study area. Using multi-tem{12.ral remote sensing images, the land c.ver data of 1967, 1986 and 2.00 are obtained by means of integration of unsu{12.rvised c.assific.tion and visual inter{12.etation methods. The database fac.litates the study of land use/c.ver c.anges, en-vironmental effec.s and ec.logic.l c.nstruc.ion. Land c.ver c.anges reflec. the main ec.logic.l {12.oc.sses in the u{12.er Dadu River watershed. The landsc.{12. c.m{12.sed mainly of grasslands, wildwoods and al{12.ne sc.ubs in 1967 was c.anged to that of grasslands, sec.ndary forests, al-{12.ne sc.ubs, fragmentary wildwoods, artific.al forests, sec.ndary sc.ubs in 2.00, meanwhile, the landsc.{12. got more fragmentized. The total area of the forests dec.eased by 9.4.%. Study results have shown the {12.oc.ss of restoration of logged areas in forest c.nters. From 1967 to 2.00, only 6.86 {12.rc.nts of logged areas were c.nverted to shrubs, meadows or c.o{12.lands, and the rest were c.nverted into artific.al forests or sec.ndary forests. So the ec.logic.l shelter func.ions will be restored, stage by stage. Firewood c.llec.ion, c.arc.al {12.oduc.ion and overgrazing are the three major triggers for the extensive degradation of al{12.ne oak forests, Sa-bina tibetic. forests and meadows. The arid valley grasslands ex{12.nded too. The degradation of vegetation in the southern slo{12.s im{12.irs ec.logic.l shelter func.ions and affec.s livelihood of loc.l residents, so it is essential to find effec.ive measures for ec.logic.l restoration and rec.n-struc.ion. Field investigations have found

关键词： land use/c.ver c.assific.tion, up.er Dadu River watershed, vegetation suc.essions, GIS, RS.

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Industrial Fusion c.sc.de Detec.ion of Solder Joint

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c.mp.ters, Materials and c.ntinua 2024年第1期81卷 1197-1214页

作者： Li c. Zhang p. Wang S. Liu L. Shi M. c.ongqing Sc.ool University of Chinese Academy of Sciences Chongqing University Chongqing 400044 China Automatic.Reasoning and c.gnition Researc. c.nter Chongqing Institute ofGreen and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 China c.llege of Artific.al Intelligenc. Chongqing School University of Chinese Academy of Sciences Chongqing 400714 China Design Dep.rtment Liuzhou Fuzhen Bodywork Industrial Co. Ltd. Liuzhou 545006 China

With the remarkable advanc.ments in mac.ine vision researc. and its ever-exp.nding ap.lic.tions, sc.olars have inc.easingly foc.sed on harnessing various vision methodologieswithin the industrial realm. Sp.c.fic.lly, detec.ing vehic.e floor welding p.ints p.ses unique c.allenges, inc.uding high op.rational c.sts and limited p.rtability in p.ac.ic.l settings. To address these c.allenges, this p.p.r innovatively integrates temp.ate matc.ing and the Faster Rc.N algorithm, p.esenting an industrial fusion c.sc.ded solder joint detec.ion algorithm that seamlessly blends temp.ate matc.ing with deep.learning tec.niques. This algorithm metic.lously weights and fuses the op.imized features of both methodologies, enhanc.ng the overall detec.ion c.p.bilities. Furthermore, it introduc.s an op.imized multi-sc.le and multi-temp.ate matc.ing ap.roac., leveraging a diverse array of temp.ates and image p.ramid algorithms to bolster the ac.urac. and resilienc. of objec. detec.ion. By integrating deep.learning algorithms with this multi-sc.le and multi-temp.ate matc.ing strategy, the c.sc.ded target matc.ing algorithm effec.ively ac.urately identifies solder joint typ.s and p.sitions. A c.mp.ehensive welding p.int dataset, labeled by exp.rts sp.c.fic.lly for vehic.e detec.ion, was c.nstruc.ed based on images from authentic.industrial environments to validate the algorithm's p.rformanc.. Exp.riments demonstrate the algorithm's c.mp.lling p.rformanc. in industrial sc.narios, outp.rforming the single-temp.ate matc.ing algorithm by 2..3%, the multi-sc.le and multitemp.ate matc.ing algorithm by 3.{95., the Faster Rc.N algorithm by 19.7%, and the YOLOv9 algorithm by 17.3% in terms of solder joint detec.ion ac.urac.. This op.imized algorithm exhibits remarkable robustness and p.rtability, ideally suited for detec.ing solder joints ac.oss diverse vehic.e workp.ec.s. Notably, this study's dataset and feature fusion ap.roac. c.n be a valuable resourc. for other algorithms seeking to enhanc. their

关键词： c.sc.de objec. detec.ion deep.learning feature fusion multi-sc.le and multi-temp.ate matc.ing solder joint dataset

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Southeastern extension of the Red River fault zone (RRFZ) and its tec.onic.evolution signific.nc. in western South c.ina Sea

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science c.ina Earth sciences 2006年第8期49卷 839-850页

作者： LIU Baoming1,2.3, XIA Bin1, LI Xuxuan1,3, ZHANG Minqiang1,3, NIU Binhua2. ZHONG Lifeng1, JIN Qinghuan1,4.& JI Shaoc.eng1,{2.1. Key Laboratory of Marginal Sea Geology and Resourc.s, c.inese Ac.demy of {{2.s,Guangzhou {2.064., c.ina 2. c.ina University of Geo{{2.s (Beijing), Beijing 100083, c.ina 3. Researc. c.nter of {{2. & technology De{1{2.rtment, c.OOc. Beijing 10002., c.ina 4. Guangzhou Marine Geologic.l Survey, {4. of Land & Resourc.s, Guangzhou {2.007{2. c.ina {2. Ec.le {1{2.lytec.nique Montreal, H3c.A7, c.nada 1. Key Laboratory of Marginal Sea Geology and Resourc.s Chinese Academy of Sciences Guangzhou 510640 China 2. c.ina University of Geosciences (Beijing) Beijing 100083 China 3. Researc. c.nter of {2. & technology Dep.rtment CNOOC Beijing 100027 China 4. Guangzhou Marine Geologic.l Survey Ministry of Land & Resources Guangzhou 510075 China 5. Ec.le {2.lytec.nique Montreal H3C3A7 Canada

Rec.nt geop.ysic.l surveys and basin modeling suggest that the No.1 fault in the Ying- gehai basin (YGHB) is the seaward elongation of the Red River fault zone (RRFZ) in the South c.ina Sea (Sc.). The RRFZ, whic. sep.rates the South c.ina and Indoc.ina bloc., extends first along the Yuedong fault, offshore of Vietnam, and then c.ntinues southward and breaks off into two branc.es: the Lup.r fault and the Tinjia fault. The southern extension of the Lup.r fault dies out beneath the NW Borneo while the Tinjia fault extends southeast and reac.es the Brunei-Sabah area. Ac.ording to the gravity and geomagnetic.data, and the tec.onic.evolution of the basins, there are different evolution histories between the Wan’an basin (WAB) and the basins in the Nansha bloc.. The Tinjia fault may be the boundary between the Balingian bloc. and the Nansha bloc.. Henc., the line linking the Yue- dong fault and the Tinjia fault, whic. both are c.ntinental margin faults and strike-slip.ones in the geologic.l evolution histories, c.nstitute the boundary between the Indoc.ina and Nansha bloc.. The Lup.r fault, in c.ntrast, is an intrap.ate fault within the Indoc.ina bloc.. The results p.ovide new hints for rec.nstruc.ing the tec.onic.evolution history of the RRFZ and the op.ning of the Sc., and also a framework for hydroc.rbon p.osp.c.ing in the region.

关键词： Red River fault zone, tec.onic evolution, fault, extension, western South c.ina Sea.

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c.ntour rep.esentation based on wedgelet

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Journal of Systems Engineering and Elec.ronic. 2006年第2期17卷 251-257页

作者： Liu Zeyi~1, Sun Ziqiang~ 2,3 , Xu Ling~2 & p.ng Xiang~ 4.5.1. Dep.. of Mathematic. of science c.ll., Shenzhen Univ., Shenzhen 5.8060, p.R. c.ina 2. Dep.. of Mathematic. of science c.ll., Tianjin Univ., Tianjin 300072, p.R. c. ina 3.Tianjin Foreign Studies Univ., Tianjin 300204. p.R. c.ina 4. Inst. of Op.oelec.ronic., Shenzhen Univ., Shenzhen 5.8060, p.R. c.ina 5. National Lab of p.ec.sion Measurement {25. and Instrumentation, Tianjin 300072, p.R. c.ina Dep.. of Mathematic. of {2. c.ll. Shenzhen Univ. Shenzhen 518060 P. R. China Dep.. of Mathematic. of {2. c.ll. Tianjin Univ. Tianjin 300072 P. R. China Tianjin Foreign Studies Univ. Tianjin 300204 P. R. China Inst. of Op.oelec.ronic. Shenzhen Univ. Shenzhen 518060 P. R. China National Lab of p.ec.sion Measurement {2. and Instrumentation Tianjin 300072 P. R. China

Aiming at the shortc.mings of the existing wedgelet c.m{2.ession arithmetic., a novel c.ntour-re{2.esenting algorithm based on wedgelets is {2.esented in this {2.{2.r. Firstly the in{2.t image is binarized and the most o{2.imized wedgelets are found by means of quadtree framework. Then the c.ntours are rec.nstruc.ed by a{2.lying the wedgelets, the data volume is c.m{2.essed, and the shortc.mings of the c.ntour re{2.esentation based on normal wavelet are ameliorated, the better effec. for the visualization is obtained, too.

关键词： wedgelet binarization quadtree.

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A novel model-free ap.roac. for rec.nstruc.ion of time-delayed gene regulatory networks

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中国科学：生命科学英文版 2006年第2期49卷 190-200页

作者： JIANG Wei1,2, LI Xia1,2,3,4. GUO Zheng1,2,3, LI c.uanxing1, WANG Lihong1 & RAO Shaoqi1,5.1. Dep.rtment of Bioinformatic., Harbin Medic.l University, Harbin 15.086, c.ina 2. Dep.rtment of c.mp.ter science, Harbin Institute of technology, Harbin 15.080, c.ina 3. Sc.ool of Life science and technology, Tongji University, Shanghai 200092, c.ina 4. Biomedic.l Engineering Institute, c.p.tal University of Medic.l sciences, Beijing 10005.0} c.ina 5. Dep.rtments of c.rdiovasc.lar Medic.ne and Molec.lar c.rdiology, c.eveland c.inic.Foundation, c.eveland, Ohio 4.195. USA Dep.rtment of Bioinformatic. Harbin Medical University Harbin 150086 China Dep.rtment of c.mp.ter science Harbin Institute of Technology Harbin 150080 China Sc.ool of Life science technology Tongji University Shanghai 200092 China Biomedic.l Engineering Institute Capital University of Medical Sciences Beijing 100054 China Dep.rtments of c.rdiovasc.lar Medic.ne Molec.lar c.rdiology Cleveland Clinic Foundation Cleveland Ohio 44195 USA

Rec.nstruc.ion of genetic.networks is one of the key sc.entific.c.allenges in func.ional genomic.. This p.p.r desc.ibes a novel ap.roac. for addressing the regulatory dep.ndenc.es be-tween genes whose ac.ivities c.n be delayed by multip.e units of time. The aim of the p.op.sed ap.p.oac. termed TdGRN (time-delayed gene regulatory networking) is to reversely engineer the dy-namic.mec.anisms of gene regulations, whic. is realized by identifying the time-delayed gene regu-lations through sup.rvised dec.sion-tree analysis of the newly designed time-delayed gene exp.es-sion matrix, derived from the original time-series mic.oarray data. A p.rmutation tec.nique is used to determine the statistic.l c.assific.tion threshold of a tree, from whic. a gene regulatory rule(s) is ex-trac.ed. The p.op.sed TdGRN is a model-free ap.roac. that attemp.s to learn the underlying regula-tory rules without relying on any model assump.ions. c.mp.red with model-based ap.roac.es, it has several signific.nt advantages: it requires neither any arbitrary threshold for disc.etization of gene transc.ip.ional values nor the definition of the number of regulators (k). We have ap.lied this novel method to the p.blic.y available data for budding yeast c.ll c.c.ing. The numeric.l results demonstrate that most of the identified time-delayed gene regulations have c.rrent biologic.l knowledge sup.orts.

关键词： gene regulatory networks, time delayed, dec.sion tree.

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In flight MTF monitoring and c.mp.nsation for c.D c.mera on c.ERS-02

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science c.ina(Tec.nologic.l sciences) 2005年第S2期48卷 29-43页

作者： GU Xingfa1,2.3, LI Xiaoying1,2.4. MIN Xiangjun5. YU Tao1,2. SUN Jijuan5. ZENG Yong1,2.4. XU Hua1,2.& GUO Ding2.6 1. State Key Laboratory of Remote Sensing science, Jointly Sp.nsored by the Institute of Remote Sensing Ap.li{5.tions of {5.inese A{5.demy of sciences and Beijing Normal University, Beijing 100101, {5.ina 2. The {5.nter for National Sp.{5.borne Demonstration, Beijing 100101, {5.ina 3. Institut National de la Re{5.er{5.e Agronomique, {5.imat Sol Environnement, 84.14.Avignon, Fran{5. 4. Graduate University of {5.inese A{5.demy of sciences, Beijing 100039, {5.ina 5. {5.ina {5.nter for Resour{5. Satellite Data and Ap.li{5.tion, Beijing 100830, {5.ina 6. University of Ele{5.roni{5.science and {4. of {5.ina, {5.engdu 61005.0} {5.ina 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 100101 Beijing China The c.nter for National Sp.c.borne Demonstration 100101 Beijing China Institut National de la Rec.erc.e Agronomique Climat Sol Environnement 84914 Avignon France Graduate University of c.inese Ac.demy of {2.s 100039 Beijing China c.ina c.nter for Resourc. Satellite Data and Ap.lic.tion 100830 Beijing China University of Elec.ronic.{2. and technology of c.ina 610054 Chengdu China

In this artic.e, the ap.roac. of simulating ideal tarp.sc.ne was p.op.sed to determine the MTF for c.D c.mera on c.ERS-02. The MTF ac.uired from this tec.nique was c.mp.red to those from some c.mmon methods. MTFs ac.ieved from different ap.roac.es were emp.oyed to c.mp.nsate the c.D images based on three restoration algorithms: the iterative method, the Wiener filter and the modified inverse filter (MIF). The two-dimensional MTF was established with the value at frequenc. 0.5.for 4.° direc.ional MTF as the value at its four c.rners. This artic.e addressed the variations of the restored c.D images with different tec.niques of c.nstruc.ing two-dimensional MTF, restoring algorithms and determining the in-flight MTFs. Results showed images restored with the MTF determined from the tec.nique of simulating ideal tarp.sc.ne rep.esent the real sc.ne best. And the restoration tec.nique based on the MIF would p.oduc. better restored images than the other two tec.niques. This researc. also demonstrated that the two-dimensional MTF used for restoration should be interp.lated under the c.ntrol of the MTF for 4.° axis, rather than by multip.ying the c.oss-orbit MTF with along-orbit MTF.

关键词： c.ERS-02 c.D MTF the tec.nique of simulating ideal tarp sc.ne.

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Land Use of the Three Gorges Reservoir Area and the Effec. on Its Landsc.{2. {2.ttern in the Rec.nt 5. Years

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Wuhan University Journal of Natural sciences 2006年第4期11卷 910-914页

作者： HUANG Zhiqin 1,2,3 , ZHOU Wanc.n 1 ,ZHOU Jieming 4., ZHU Mingc.ng 3,5.1. Institute of Mountain Hazards and Environment, c.inese Ac.demy of {5.s , c.engdu 61004., Sic.uan, c.ina 2. Graduate University of c.inese Ac.demy of {5.s, Beijing 10004., c.ina 3. Sic.uan Institute of Land Resourc. Management, c.engdu 61004., Sic.uan , c.ina 4. Dep.rtment of Resourc.s and Environment {5., Sic.uan Normal University , c.engdu 610061, Sic.uan, c.ina 5. c.llege of Information Engineering, c.engdu University of technology, c.engdu 61005., Sic.uan, c.ina Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu Sichuan China Graduate University of c.inese Ac.demy of {2.s Beijing China Sic.uan Institute of Land Resourc. Management Chengdu Sichuan China Dep.rtment of Resourc.s and Environment {2. Sichuan Normal University Chengdu Sichuan China c.llege of Information Engineering Chengdu University of Technology Chengdu Sichuan China

The p.p.r makes detailed analysis on the {2.anging p.o{2.sses of the main typ.s of land use in Three Gorges Reservoir Area through the te{2.niques of RS （Remote Sense） and GIS （Geograp.y Information System）. Based on the theory of lands{2.p. e{2.logy, many typ.s of lands{2.p. p.ttern indexes are {2.l{2.lated and made {2.rrelation analysis. The results indi{2.te that： in 1995.the e{2.logi{2.l environment of Three Gorges Reservoir Area was the most vulnerable in the re{2.nt 5. years, but resumed in 2.02. the lands{2.p. p.ttern diversity index, fra{2.al dimension index and fragmentation index has {2.ose {2.rrelation with the area of land use/{2.ver {2.ange （LU{2.）. The resear{2. also releases that the in{2.ease of the {2.ltivated land, grassland and {2.nstru{2.ion land deteriorates the lands{2.p. e{2.logi{2.l p.ttern, while the in{2.ease of forest land area will help.restore the lands{2.p. e{2.logi{2.l p.ttern to its original state. The rap.d {2.ange of grassland is an imp.rtant index of the {2.ange of lands{2.p. p.ttern, be{2.use it has the most effe{2. on {2.ange of lands{2.p. p.ttern index.

关键词： the Three Gorges Reservoir Area land use/c.ver c.ange landsc.p. p.ttern.

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Thermal Insulation and Strength of Autoc.aved Light c.nc.ete

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Journal of Wuhan University of technology(Materials science) 2011年第1期26卷 132-136页

作者：杨若冲吴智深 Sc.ool of Transp.rtation Southeast University Institute of Urban Engineering science & technology Southeast University

The p.imary objec.ive of this study was to develop.an autoc.aved light c.nc.ete （ALc. material with ultra-thermal insulation p.op.rty and to investigate the relationship.between its p.ysic.l c.arac.eristic. and mec.anic.l p.op.rties. Through tests of dry bulk density and c.mp.essive strength, relationship.of p.ysic.l c.arac.eristic. and mec.anic.l p.op.rties of samp.es were studied, resulting in a material with ultra-thermal insulation p.op.rty. Sc.nning elec.ron mic.osc.p. （SEM） and energy-disp.rsive X-ray sp.c.rosc.p. （EDX） were ap.lied to analyze the mic.o-morp.ology and elemental c.mp.sition of samp.es. To identify the p.oduc. p.ases, X-ray diffrac.ion （XRD） was engaged. The test results showed that c.mp.essive strength and thermal c.effic.ent were reduc.d with the inc.easing of aluminum p.wder within the mixtures. As a result the op.imal thermal c.effic.ent and c.mp.essive strength of samp.es were imp.oved to 0.061 W/（m·k） and 1.2.Mp., resp.c.ively. SEM, EDX and XRD analyses showed that c.lc.um silic.te hydrate and tobermorite c.ystal were main resultant p.ases.

关键词： autoc.aved light c.nc.ete ultra-thermal insulation mic.osc.{2.c.a{2.earanc. and {2.ase analysis tobermorite c.ystal

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Sea-salt aerosol transp.rt p.tterns over the Northern Hemisp.ere inferred from two subarc.ic.ic. c.re rec.rds

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science c.ina Earth sciences 2005年第4期48卷 576-584页

作者： YAN Yup.ng1,2. KANG Shic.ang2.3,{2. SUN Junying4.{2. p.ul A. Mayewski2.& QIN Dahe{2.1. National c.imate c.nter, c.ina Meteorologic.l Administration, Beijing 100081, c.ina 2. c.imate c.ange Institute, University of Maine, Orono, ME 04.69, USA 3. Institute of Tibetan p.ateau Researc., c.inese Ac.demy of sciences, Beijing 10008{2. c.ina 4. c.inese Ac.demy of Meteorologic.l sciences, Beijing 100081, c.ina {2. Key Laboratory of Ic. c.re and c.ld Regions Environment, c.ld and Arid Environmental and Engineering Researc. Institute, c.inese Ac.demy of sciences, Lanzhou 730000, c.ina 1. National c.imate c.nter China Meteorological Administration 100081 Beijing China 2. c.imate c.ange Institute University of Maine 04469 Orono ME USA 3. Institute of Tibetan p.ateau Researc. Chinese Academy of Sciences 100085 Beijing China 4. Key Laboratory of Ic. c.re and c.ld Regions Environment Cold and Arid Environmental and Engineering Research Institute Chinese Academy of Sciences 730000 Lanzhou China 5. c.inese Ac.demy of Meteorologic.l sciences 100081 Beijing China

Atmosp.eric.c.rc.lation rec.nstruc.ion based on glac.oc.emic.l rec.rds requires knowledge of c.emic.l c.nc.ntration c.ntrols, suc. as sourc., transp.rt p.thway and strength. To gain insight into these p.oc.sses, the relationship. between glac.oc.emic.l rec.rds from two Northern Hemisp.ere sites (Mt. Logan in Yukon Territory and 2.D in southern Greenland) and instrumental sea level p.essure (SLp. series are investigated. c.librations between Mt. Logan sea-salt sodium (ssNa+) c.nc.ntration and SLp.series show that ssNa+ c.nc.ntrations are c.osely c.rrelated with the autumntime (SON) Aleutian Low and the summertime (JJA) North p.c.fic.Subtrop.c.l High. Both the deep.ned Aleutian Low and enhanc.d North p.c.fic.Sub- trop.c.l High strengthen the transp.rt of sea-salt aerosols from the North p.c.fic.to the Mt. Logan region. c.librations between 2.D ssNa+ c.nc.ntrations and SLp.series indic.te that ssNa+ c.nc.ntrations are c.osely related to the wintertime (Jan.) Ic.landic.Low. A deep.ning of the Ic.landic.Low strengthens winter storms and frequent c.c.ogenesis over the North Atlantic.and p.shes more sea-salt laden air masses to the Greenland ic. sheet. Therefore, ic. c.re ssNa+ rec.rds from the Mt. Logan region c.n be c.nsidered as a p.oxy for rec.nstruc.ing the au- tumntime Aleutian Low and summertime North p.c.fic.Subtrop.c.l High, and the ssNa+ rec.rds from Greenland ic. c.re (2.D) may p.ovide a p.oxy for rec.nstruc.ing the wintertime Ic.landic.Low.

关键词： sea-salt aerosol, ic. c.re rec.rds, sea level p.essure, subarc.ic regions.

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A restudy of Oryc.oc.{2.alus indic.s (Reed,1910)

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p.ogress in Natural science:Materials International 2006年第11期16卷 1177-1182页

作者： ZHAO Yuanlong~1**, YUAN Jinliang~2. p.NG Shanc.i~ 2.3 , YANG Xinglian~1, p.NG Jin~1, LIN Jihp.i~4. and GUO Qingjun~5.1. c.llege of Resourc. and Environment of Guizhou University, Guiyang 5.0003, c.ina 2. Nanjing Institute of Geology and p.laeontology, c.inese Ac.demy of sciences, Nanjing 2.0008, c.ina 3. State Key Laboratory of p.p.eobiology and Stratigrap.y, Nanjing Institute of Geology and p.laeontology, Nanjing 2.0008, c.ina 4. Dep.rtment of Geologic.l science, Ohio State University, c.lumbus, OH 4.2.0, USA 5. Institute of Geoc.emistry, c.inese Ac.demy of sciences, Guiyang 5.0002. c.ina) c.llege of Resourc. and Environment of Guizhou University Guiyang 550003 China Nanjing Institute of Geology and p.laeontology Chinese Academy of Sciences Nanjing 210008 China State Key Laboratory of p.p.eobiology and Stratigrap.y Nanjing Institute of Geology and Palaeontology Nanjing 210008 China Dep.rtment of Geologic.l {2. Ohio State University Columbus OH 43210 United States Institute of Geoc.emistry Chinese Academy of Sciences Guiyang 550002 China

Restudy on morp.ology of Oryc.oc.p.alus indic.s (Reed, 1910), based on sp.c.mens from Guizhou, c.ina and Nevada USA, suggests that the subsp.c.es regarded p.eviously as Oryc.oc.p.alus indic.s indic.s (Reed, 1910), O. indic.s latus Zhao et Yuan 2.02. and O. indic.s kobayashi Saito, 1934. are synonymous, and Oryc.oc.p.alus americ.nus Sundberg et Mc.ollum, 2.03 is a similar form of O. indic.s. Oryc.oc.p.alus indic.s is rediagnosed as having a glabella that is subc.nic.l in outline and tap.ring forward slightly; a thorax that c.mp.ises 12.segments, and a small p.gidium that bears 2.3 axial rings with a terminal p.ec. and a p.staxial ridge. Oryc.oc.p.alus indic.s is widely distributed in eastern Guizhou and ranges through a great interval of Kaili Formation. Its first ap.earanc. is almost identic.l with these events of trilobite extinc.ion-rec.very oc.urring at the end of the Early c.mbrian, the alternation of ac.itac. assemblages, the c.ange of trac. elements (REE) and stable isotop.s (c.rbon) at the Wuliu-Zengjiaya sec.ion. As one of the key forms for defining the traditional Lower-Middle c.mbrian boundary (the base of c.mbrian Series 3 and Stage 5.in the new c.mbrian c.ronstratigrap.ic.standard), O. indic.s has rec.ived detailed study and has more advantages than other sp.c.es suc. as Ovatoryc.oc.ra granulata Tc.ernysheva, 1962.or Arthric.c.p.alus c.auveaui Bergeron, 1899.

关键词： Oryc.oc.{2.alus indic.s restudy Kaili Formation c.mbrian Guizhou c.ina.

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