共查询到20条相似文献,搜索用时 93 毫秒
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新一代"数字城市"集成开发平台 总被引:2,自引:0,他引:2
为了全面整合现有各类城市信息资源和有效的集成城市各业务部门应用系统,需要建立一种高效管理城市各类信息资源和提供各种应用与服务的基础信息支撑平台,以满足"数字城市"信息基础平台建设的需要.利用MapGIS数据中心的数据仓库技术、功能仓库技术和搭建式二次开发技术,实现"数字城市"集成开发平台.该平台能提供统一的城市各类业务应用与服务系统,实现城市各类信息资源共享以及网络化的社会服务,最大程度地发挥我国城市信息资源的经济效益和社会效益. 相似文献
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以国家扶贫攻坚重点地区——贵州乌蒙山七星关区为例,参考"全国地质资源环境承载能力评价与监测预警"形成的评价理论和方法,结合岩溶石山区地下水资源水文地质条件及开发利用实际,探索构建岩溶石山区县域范围内地下水资源承载能力评价方法。通过系统评价七星关区地下水资源承载能力,认为该区地下水资源承载能力较大,但资源、开采强度、劣质水分布不均,降低了部分区域地下水资源承载能力。评价结果为区域国土空间规划及"三区三线"划定提供了依据。同时,该评价方法亦为岩溶地区地下水资源承载能力评价提供了借鉴。 相似文献
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全国油砂和油页岩资源评价项目研究工作进展 总被引:6,自引:1,他引:5
张德云 《吉林大学学报(地球科学版)》2005,35(1):32-32
石油天然气资源是重要的能源矿产和战略性资源.为了掌握全国油气资源状况,获得各级资源量数据,建立国家油气资源评价体系,为国家制定重大战略和经济发展规划提供科学依据,根据国务院的部署,由国土资源部和国家发展改革委员会联合组织开展了"新一轮全国油气资源评价".该国家专项下设5个一级项目,即全国常规油气资源评价、全国煤层气资源评价、全国油砂资源评价、全国油页岩资源评价和全国油气资源评价系统.吉林大学承担其中两项,全国油页岩资源评价(项目编号ZP-Y,刘招君教授负责)和全国油砂资源评价(项目编号ZP-S,单玄龙教授负责). 相似文献
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基于地球系统科学理论可知,对于我国城市发展中的资源与环境不匹配引发的诸多问题,需要通过城市地质调查与评价,重新认知城市发展模式,为后城市化时代的城市生态宜居发展提供决策支撑.利用文献综述法与案例分析法,系统梳理了我国城市发展面临的问题、机遇与挑战,提出基于"城市发展阶段识别-城市建设尺度分析-城市地质资源环境联合效应评... 相似文献
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资源环境承载能力评价是进行国土空间规划和用途管控的基础性工作,越来越受到国家重视。在资源环境承载能力研究实践中,以自然资源环境系统及其与社会经济系统的关系为主要研究对象,创新性提出了"资源环境承载协调理论",并基于此理论初步建立了不同空间尺度的地质资源环境承载能力评价技术方法,构建了地质环境、地下水资源、矿产资源等不同资源环境要素的承载能力评价指标体系,包括承载本底评价指标和承载状态评价指标。规范了不同尺度的资源与环境承载能力评价流程,为有序推动全国、区域及市县尺度的自然单元和行政单元的地质资源环境承载能力评价工作提供了强有力的。 相似文献
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消除贫困是社会主义的本质要求,而脱贫攻坚是全面建成小康社会的底线任务.《中国资源枯竭型城市的产业转型》一书从介绍资源型城市兴衰规律入手,分别研究了中国资源枯竭型城市产业转型的模式、成本、机制、政策、效果评价,提出了资源枯竭型城市产业转型的资源开发补偿、衰退产业援助和替代产业扶持"三个机制",为乡村脱贫工作提供参考. 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引:4,自引:0,他引:4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozach Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ1 roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003). 相似文献
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正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level 相似文献
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正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7), 相似文献
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正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci- 相似文献
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正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli- 相似文献
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正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.) 相似文献
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正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861 相似文献