三稀矿产资源新兴产业发展及政策建议     

周园园 《地质论评》2016,62(S1):13-14

三稀矿产资源是战略性新兴产业发展的基础原料,广泛应用在国防、航天、高端电子设备、核工业、发光材料等高精尖技术领域。本文在系统收集国内外三稀矿产资源生产、消费领域、价格以及进出口资料的基础上,提出了促进三稀矿产资源新兴产业发展的政策建议  相似文献   

中短期数字化天气预报技术现状及趋势   总被引：5，自引：3，他引：2  

代刊  曹勇  钱奇峰  高嵩  赵声蓉  谌芸  钱传海 《气象》2016,42(12):1445-1455

建立无缝隙集约化的天气预报业务体系,需要进一步加强中短期天气预报业务技术的发展。通过对现状回顾,指出经过2011—2015年的气象现代化建设,在我国国家级和部分省级业务单位已初步建立了数字化中短期业务预报技术流程,其包括数值模式系统、客观方法释用、预报主观编辑制作以及精细化格点后处理四个方面。但与国外发达国家相比,我国中短期业务技术还存在数值模式发展水平不高、客观预报技术方法未全面深入开展、缺乏有效技术工具支撑预报员进行订正、格点化的处理技术基础薄弱等问题。文章在发展现状和问题分析的基础上,提出未来应提高自主数值模式系统的基础支撑作用,深入发展海量预报信息的客观提取及订正技术,加强开发主观和客观融合的技术和工具平台,完善精细化的格点处理技术的发展思路,并进行具体阐述。最后,从技术发展的基础数据支持、路线选择、发展规律以及交流共享四个方面提出参考意见。  相似文献   

Study of high temperature targets identification and temperature retrieval experimental model in SWIR remote sensing based Landsat8     

《International Journal of Applied Earth Observation and Geoinformation》2016

For surface features in short-wave infrared (SWIR, 1.3–3.0 μm) in remote sensing imagery, pixel values depict the total energy including reflection and emission. For surface features at normal temperature in SWIR band, emission energy can be ignored. While for surface features at high temperature in SWIR band, emission energy is equal to or even higher than the reflection energy. So remote sensing imagery of SWIR band can be used to separate emission and reflection energy as well as to realize temperature retrieval of high temperature targets. In this study, the seventh band (SWIR band) of Landsat8 OLI remote sensing imagery is used to perform the theoretical model research for temperature retrieval of high temperature targets. In the meantime, it is also used with the corresponding observation experiment of synchronization satellite to check the theoretical model. The result shows that the radiant flux density for mixed pixels with high temperature targets is higher than adjacent pixels without high temperature targets. Thus, the high temperature pixels can be identified in SWIR band. The retrieval results of temperature and fractional area for high temperature targets are consistent with reality. In the study, the result illustrates that it is effective to identify high temperature targets in remote sensing imagery of SWIR band and the model is appropriate for temperature retrieval use.  相似文献   

不动产统一登记信息平台建设探讨   总被引：3，自引：0，他引：3  

尹鹏程  付丽莉  蔡先娈  邓玉锋  纪国平 《测绘科学》2016,41(11):50-55

不动产统一登记信息平台的建立是不动产统一登记工作实现信息实时更新和共享的基础。以构建不动产统一登记信息平台为主线,提出了以土地为核心的不动产单元构建方法,构建了以不动产单元为基础的不动产权利登记体系,分析了不动产登记业务与不动产管理其他相关业务的关联。在此基础上,明晰了不动产统一登记信息平台在国土资源信息化总体框架中的定位,以徐州市为例,给出了市(县)级不动产统一登记信息平台建设的主要内容,对当前不动产统一登记信息平台的建设进行了有益的探索。  相似文献   

Quantitative seismic geomorphology of a submarine channel system in SE Brazil (Espírito Santo Basin): Scale comparison with other submarine channel systems     

《Marine and Petroleum Geology》2016

Detailed morphological analyses of a Pleistocene-Holocene submarine channel system in terms of its hierarchical framework, were carried out using a 3D seismic volume from offshore Espírito Santo, SE Brazil. The channel morphology shows marked variations, with five segments (Segments a to e) being identified along its full length. For example, the cross-sectional area of the channel decreases by a factor of 70 from Segment a to Segment c, and is then followed by a nearly four-fold increase from Segment c to Segment d. The significant changes in channel morphology relate to temporal and spatial variations in flow volume within the channel. In the same channel system, the valley reveals three distinct segments (Segments A to C), with similar aspect ratios but marked variations in morphology along the valley distance. Valley morphological changes are chiefly affected by erosional processes. Segment B is characterised by the largest valley-base width, valley width, and cross-sectional area compared to the other two segments. Valley enlargement in Segment B results from relatively high degrees of lateral channel migration and associated cut bank erosion, leading to the widening of the valley, especially the valley base. In Segment C, the valley is characterised by inner bank erosion in the form of shallow-seated mass failures, which only enlarged the upper part of the valley wall. The spatial variations in both channel and valley morphology documented here suggest an important role of local factors (e.g. salt diapirs, tributaries, overbank collapse) in the development of channel systems. Hence, the morphological analyses developed in this work provide an effective tool for studying channels and valleys on continental slopes around the world.  相似文献   

Towards an EU Action Plan on Cetacean Bycatch     

《Marine Policy》2016

For decades, cetacean bycatch has been a major conservation and welfare concern in Europe, with high numbers of harbour porpoises, dolphins and whales continuing to die each year. Despite binding legal requirements to reduce bycatch, there has been limited effective monitoring or mitigation. Bycatch is also an important welfare issue. At this critical juncture, with discussion of incorporating monitoring and mitigation of bycatch of protected species in Europe into the Data Collection Framework and Technical Measures Framework taking place to help deliver the reformed Common Fisheries Policy (CFP), a clear, effective strategy could identify the steps that are required by all EU Member States to reduce bycatch towards zero. Here, implementation of current monitoring and mitigation obligations are reviewed. Recommendations are made for the provision of clear EU guidance in order to improve and unify population surveillance and bycatch monitoring, with enhanced implementation and enforcement from Member States. A more regionalised evidence-based approach to monitoring and mitigation is in line with the move to more regionalised management under the CFP, with Member States robustly showing that bycatch levels are decreasing over a set period of time (e.g. 5 years) by a specified amount. To this end, an EU Action Plan on Cetacean Bycatch, comparable to the existing 2012 Action Plan for reducing incidental catches of seabirds in fishing gear, might be beneficial and could ultimately form a model for an international Food and Agricultural Organisation (FAO) Cetacean Bycatch Reduction Action Plan.  相似文献   

A proposal for restructuring Descriptor 3 of the Marine Strategy Framework Directive (MSFD)     

《Marine Policy》2016

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中国—吉尔吉斯斯坦天山构造格架与演化          下载免费PDF全文

孟广路  罗彦军  王斌 《中国地质调查》2018,5(1):28-36

中国—吉尔吉斯斯坦天山地处中亚天山造山带中段,地质构造复杂,矿产资源丰富。在前人资料基础上,基于区域构造-岩石组合的分布发育及时空属性特征,统一将研究区划分为哈萨克斯坦和塔里木两大板块,二者由南天山晚古生代缝合带所焊接。其中,进一步划分为5个二级单元,18个三级单元。研究认为,研究区内北、中、南天山构造格架连续,在800 Ma(相当于南华纪下限)前后都完成了大陆块体的拼合,成为全球新元古代罗迪尼亚超大陆的组成部分。此后经历了大致相同的构造演化史,从中二叠世开始全区转化成陆内盆山构造格局,新生代印度大陆同欧亚大陆碰撞使这一陆内盆山构造格局不断臻于完善。  相似文献   

Policy mobilities,territorial knowledge dynamics and the role of KIBS: Exploring conceptual synergies of formerly discrete approaches     

《Geoforum》2018

Although contemporary policy making is substantially affected by consultants, little is known about the interconnection of their role inside policy making networks and their key product – knowledge. This paper matches the approaches on Policy Mobilities (PM) and Territorial Knowledge Dynamics (TKD) to fill this theoretical gap. By exploring the synergies of both concepts, a research agenda is suggested that enables to investigate the multi-facetted entanglements of knowledge and policy making dynamics as well as what stake consultants have in this complex assemblage. Accordingly, this paper claims appreciation of ‘variegated consultocracies’ rather than global homogeneity of consultants’ engagement in policy making processes by explicating better integration of ‘scale, ‘time’, and actors’ embeddedness into PM. The paper thus primarily aims to provide a solid theoretical and methodological basis for exploring the complex dynamics consultants take part in, and how they in turn impact policy making processes.  相似文献   

IPCC AR6的“产生影响的气候因子”评估框架     

王文  傅文睿 《气候变化研究进展》2021,17(6):719-725

IPCC第六次评估报告（AR6）第一工作组报告提出了基于“产生影响的气候因子”（CID）的气候变化评估框架,以一组影响社会或生态系统的气候状态为基础进行气候变化评估。这个CID评估框架有7个类型,33个气候因子,每个因子可以针对被影响对象采用不同的评估指标。CID变化具有时间尺度差异性与不可逆性、突变性与临界点、凸现时间、复合性以及受影响主体依赖性等重要特征。基于CID的气候变化评估框架有助于更客观、中立、全面地评估气候变化给不同部门带来的影响和风险。  相似文献