共查询到20条相似文献，搜索用时 281 毫秒
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中国矿物岩石地球化学学会元素地球化学与区域地球化学与区域地球化学专业委员会 《矿物岩石地球化学通报》2002,21(1):69
为响应国家西部大开发的伟大战略 ,使地球化学学科更好地与国民经济同步发展 ,为西部矿产资源勘查开发作出应有的贡献 ,中国矿物岩石地球化学学会元素地球化学与区域地球化学专业委员会、中国地质大学 (北京 )与中国科学院矿床地球化学开放研究实验室共同发起主办 ,由青海西部矿业公司、青海省地质矿产勘查局与青海省地质调查院承办 ,于 2 0 0 1年 9月 2日至 4日在西宁市召开“西部矿产勘查开发中的应用地球化学”学术讨论会。来自全国有关地学单位的 6 0余位代表出席了会议。会议的宗旨是加强学术交流、增进同仁友谊、建立科研—生产合作关… 相似文献
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《地球科学进展》2005,20(9):F0002-F0002
中国气象局兰州干旱气象研究所（简称干旱所）是经国家科技部、财政部、中央编制办公室批准同意成立的国家级公益性研究机构，其主要任务是根据国民经济、社会发展、西部大开发和气象业务现代化的需要，围绕我国干旱气象与生态环境问题，开展相关的应用基础研究、应用研究和技术开发工作。干旱所前身是成立于1974年的甘肃省气象科学研究所，2001年作为中国气象局“一院八所”之一，开始进行科研体制改革，实行理事会领导下的所长负责制，建立起“开放、流动、竞争、协作”的新型管理模式和运行机制，2004年通过了国家科技部首批改革试点单位的改革目标验收。 相似文献
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本文通过介绍成都这年来在党的改革开放的政策指引下，充分发挥学院自身特色，因势利导，多方位，多渠道地开展与国外地学界的交往和国际地质科学研究与合作。利用学院地学专业的优势和学院地处中国大西南，紧邻青藏高原的地理位置，有目的地吸收国外地质学家来院，与学院教师共同进行地持科研合作项目和中国西部野外地质考察，促进学院科研和教学的发展。 相似文献
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根据西部干旱区内蒙古自治区近几年来建设项目水资源论证评审工作情况,总结了西部干旱区建设项目水资源论证工作所涉及的工程性质、取水水源及取水方式;并根据在建设项目水资源论证评审工作中经验和体会,详细阐述了评审工作应把握的宏观原则和需控制的专业技术难点。 相似文献
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Jian Wang Tao Che Zhen Li Hongyi Li Xiaohua Hao Zhaojun Zheng Pengfeng Xiao Xiaofeng Li Xiaodong Huang Xinyue Zhong Liyun Dai Hongxing Li Changqing Ke Lanhai Li 《地球科学进展》2018,33(1):12-15
The background, scientific objective, investigation contents and scheme of project “Investigation on snow characteristics and their distribution in China” was introduced in this paper. The general objective of the investigation is to build comprehensive and systematic database of snow characteristics in China, at the service of providing data for the climate change, water resource and snow disaster studies. The investigation will be performed on the three fields including the compilation of historical data, in situ measurement of snow characteristics in the typical regions, and investigation of snow characteristics using remote sensing methods. For the compilation of historical data, the historical snow data from the meteorological stations and research institutes will be firstly collected, and then they will be compiled based on a standard rule. In situ observation will be performed at point, line and area-scale on the typical regions which include Northeast region, Xinjiang Degion, and Qinghai-Tibet Plateau. The observation content will contain snow depth, snow density, snow water equivalent, snow particle shape, hardness of snowpack surface, liquid water content, grain size, snow temperature, snow/soil temperature, dielectric constant, and some chemical parameters. These snow characteristics are the priority information used for the modification of retrieval algorithm on snow parameters. Remote sensing methods will be used to build long-time series of snow cover, snow albedo and snow water equivalent datasets based on these modified algorithms. Finally, the snow characteristics from both in situ and remote sensing investigation will be used to classify snow types in China, and produce distribution maps of snow characteristic and other thematic maps. 相似文献
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地球表层系统科学与地质学史都具有自然科学和社会科学相结合的特征,两者研究内容和研究目标互有关联,都是从不同角度揭示地球各种地质作用和地质过程的客观规律,促使人与自然和谐发展。在地球表层系统各地质学科中,大地构造占有重要地位,因而探讨中国区域大地构造研究史,对地质学史也有重要意义。文中将中国区域大地构造的研究分为6个阶段,总结其发展的经验和过程,说明社会环境、科学路线、科技水平、思维方法等是决定科学发展的关键因素。21世纪地球表层系统科学将成为地球科学的主流之一,中国区域大地构造的研究应迅速融入地球表层系统的研究,同时也要积极创建新的大地构造理论体系。 相似文献
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中国的地质学非我国自有,而是在传播和引入西方近代科学文化的过程中逐渐形成的,是"西学东渐"的结果。在欧美等西方国家,至19世纪中叶,便建立并完善了近代地质学的理论和方法体系,完成了学科体制化建设,比中国至少早一个世纪。从16世纪后半叶的"西学东渐",西方近代地学传入中国进行第一次启蒙,到引进、消化、吸收和本土化,最后建立中国地质学理论和方法体系,完成学科建制,中国地质事业历经了长达三个半世纪艰辛曲折并充满坎坷的历史进程。创建于1913年的地质调查所是中国近代第一个科研机构,在章鸿钊、丁文江、翁文灏等第一代地质学家的领导下,筚路蓝缕、艰苦奋斗,在短短的二、三十年里,全面开创和奠定了中国近代地质事业,培养了一大批早期地质学家,取得了举世瞩目的成果,赢得国内外学术界的广泛赞誉。地质调查所的成功及其所取得的成就远远超出了地质学,对我国古生物学、地理学、地震学、地球物理学、土壤学、考古、古人类学、燃料和地图等诸多学科领域都产生了深远影响。 相似文献
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Xiufeng Yin Shichang Kang Maheswar Rupakheti Benjamin de Foy Ping Li Junhua Yang Kunpeng Wu Qianggong Zhang Dipesh Rupakheti 《地学前缘(英文版)》2021,12(6):114-128
Air pollution is a grand challenge of our time due to its multitude of adverse impacts on environment and society,with the scale of impacts more severe in developing countries,including China.Thus,China has initiated and implemented strict air pollution control measures over last several years to reduce impacts of air pollution.Monitoring data from Jan 2015 to Dec 2019 on six criteria air pollutants(SO2,NO2,CO,O3,PM2.5,and PM1o)at eight sites in southwestern China were investigated to understand the situation and analyze the impacts of transboundary air pollutants in this region.In terms of seasonal variation,the maximum concentrations of air pollutants at these sites were observed in winter or spring season depending on individual site.For diurnal variation,surface ozone peaked in the afternoon while the other pollutants had a bimodal pattern with peaks in the morning and late afternoon.There was limited trans-port of domestic emissions of air pollutants in China to these sites.Local emissions enhanced the concen-trations of air pollutants during some pollution events.Mostly,the transboundary transport of air pollution from South Asia and Southeast Asia was associated with high concentrations of most air pollu-tants observed in southwestern China.Since air pollutants can be transported to southwestern China over long distances from the source regions,it is necessary to conduct more research to properly attribute and quantify transboundary transport of air pollutants,which will provide more solid scientific guidance for air pollution management in southwestern China. 相似文献
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Major and trace element, and Sr-Nd isotope constraints on the origin of Paleogene volcanism in South China prior to the South China Sea opening 总被引：15，自引：0，他引：15
Sun-Lin Chung Hai Cheng Bor-ming Jahn Suzanne Y. O''Reilly Bingquan Zhu 《Lithos》1997,40(2-4):203-220
Paleogene volcanic rocks crop out in three sedimentary basins, namely, Sanshui, Heyuan and Lienping, in the attenuated continental margin of south China. Lavas from the Sanshui basin which erupted during 64-43 Ma are bimodal, consisting of intraplate tholeiitic basalt and trachyte/rhyolite associations. Similar to Cretaceous A-type granites from the nearby region, the felsic member shows peralkaline nature [Na2O + K2O ≈ 10–12%; (Na + K)/Al≈ 0.98−1.08], general enrichment in the incompatible trace elements and significant depletion in Ba, Sr, Eu, P and Ti. Although both types of the Sanshui lavas have rather uniform Nd isotope compositions [Nd(T) ≈ +6 to +4]that are comparable to Late Cenozoic basalts around the South China Sea, the felsic rocks possess apparently higher initial Sr isotope ratios (ISr up to 0.713) and form a horizontal array to the right in the Nd vs. Sr isotope plot. Closed system differentiation of mantle-derived magmas in a ‘double diffusive’ magma chamber is considered for the bimodal volcanism, in which the trachytes and rhyolites represent A-type melts after extensive crystal fractionation in the upper portion of the chamber. Such A-type melts were later contaminated by small amounts (1–3%) of upper crustal materials during ascent. On the other hand, composition of lavas in the other two basins varies from tholeiitic basalt to andesite. Their Sr and Nd isotope ratios [ISr ≈ 0.705 to 0.711; Nd(T) ≈ +1 to − 5] and generally correlative Nb-Ta depletions suggest a distinct magma chamber process involving fractional crystallization concomitant with assimilation of the country rock. We conclude that these Paleogene volcanic activities resulted from the lithospheric extension in south China that migrated southwards and eventually led to opening of the South China Sea during 30-16 Ma. 相似文献
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华南地质构造的再认识 总被引：18，自引：0，他引：18
近年来地质构造理论及测试技术的迅猛发展，为华南地质构造的研究积累了不少新资料和同位素年龄测试新数据，为检验以往对华南地质构造的认识提供了更多的科学依据，也为推动华南地质构造研究的进一步发展奠定了良好的基础。根据以往的工作成果，提供了闽北及云开大山的有关资料，对华南地质构造格局进行了再认识。认为华夏古陆应该肯定，但范围还需探讨，华南大地构造基本格局为两陆夹一盆。晋宁运动时，扬子地块与华夏地块对接；加里东运动使两陆块间洋盆褶皱逥返，形成统一陆块；海西－印支期，华南地质构造发展进入新的阶段。 相似文献
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全球环境变化与中国国家安全 总被引：3，自引：0，他引：3
20世纪90年代以来，安全概念的内涵有了重大扩展。全球环境变化作为威胁人类安全的因素之一，对国家安全和社会的发展构成了新的挑战。由全球环境变化所引发的国家安全问题一方面直接与全球环境问题相联系，另一方面是通过国际事务中的冲突表现出来的。中国未来发展面临全球环境变化的严峻挑战。中国的全球环境变化人文因素研究需要关注可能对中国国家安全产生深远影响的重大环境变化问题，重视科学地评估中国自然和社会经济系统对全球环境变化影响的脆弱性，积极推动中国国家风险管理体系建设，将全球环境变化问题纳入风险管理之列，为我国可持续发展、和谐社会构建做出应有的贡献。 相似文献