共查询到19条相似文献，搜索用时 343 毫秒
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我国地质调查9年以来,发现和评价一批大型、超大型后备勘查基地,新发现矿产地800余处,其中大型以上60余处,提交一批新增资源量,其中：铜3200万吨、铅锌7800万吨、铁矿石7．6亿吨、钾盐4亿吨、磷矿石8、5亿吨,形成若干国家级矿产资源基地雏形,有力地拉动了商业性矿产勘查。 相似文献
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2013年世界硫黄市场处于供不应求的状态。全球各种形式硫产量7531万吨,同比增长4.2%。硫黄贸易量3100万吨,同比下降3.1%。2012年硫黄视消费量为5422.9万吨,同比增长4.4%。2013年全球硫黄价格呈下降趋势,近期开始上涨。 相似文献
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硼是一种用途广泛的化工原料矿物,硼矿产品市场自2003年以来迅速增长,2007年世界硼矿产品产量约为186万吨（B2O3）,比上年增长9．7％,2008年受到金融风暴的影响增幅下降。土耳其和美国是世界最主要的硼酸盐生产者,2007年土耳其的硼酸盐产量约占世界总需求量（B2O3含量）的35％,美国约占29％。我国硼矿资源虽然丰富,但是硼矿产品不能满足国内经济建设需求,2007年国内硼砂产量约为40万吨,进口硼矿产品64．87万吨,因此充分了解世界硼矿产品市场情况就显得相当重要。 相似文献
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我国镍的供应面临挑战 总被引：2，自引：0，他引：2
新世纪我国人均GDP超过 1 0 0 0美元 ,人民生活水平不断提高。我国不锈钢的需求领域不断扩大 ,消费量从 1 999年的 1 40万吨左右快速增加到 2 0 0 3年的 430万吨左右。随着我国经济的持续快速发展 ,不锈钢需求量还将在相当长的时间内持续增长。生产不锈钢需要镍 ,这就是我国近年来镍消费量迅速增长的根本原因。新世纪开始我国跨入世界镍的消费大国行列 ,2 0 0 3年国内矿山生产镍 6万吨左右 ,消费量约 1 2 3万吨 ,产量不能满足消费需求 ,未来国内供应面临严峻挑战。一、消费和需求2 0 0 2年全球镍的消费量为 1 2 0 2 8万吨 (表1 ) ,不锈… 相似文献
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本文利用中山站弹簧重力仪记录的重力潮汐时间序列、验潮站数据、CATS2008区域和Eot11a全球海潮模型研究重力和海洋潮汐特征。结果表明,在周日频段,潮波O1的海潮振幅达到28 cm,4个主要潮波（Q1、O1、P1和K1）的全球模型与验潮站潮高差之和为4.2 cm,区域模型与验潮站潮高差之和为4.4 cm;在半日频段,潮波M2的海潮振幅达到20 cm,4个主要潮波（N2、M2、S2和K2）的潮高差之和分别为7.7 cm和5.1 cm,说明利用区域模型修正全球模型的重要性。经区域模型修正的全球海潮负荷改正后,重力主波K1、M2和S2的最终残差振幅分别下降了9.84%、56.14%和37.08%,说明区域海潮模型更能反映海洋潮汐的真实特征,用区域模型修正全球海潮模型的有效性得到验证。 相似文献
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世界最大镍矿公司———MMCNorilsk镍矿公司在俄罗斯科拉半岛的新建镍矿山于 2 0 0 4年 1 1月开工。该矿的证实和概略储量为 1 733亿吨 ,其中镍金属含量 1 30万吨 ,铜金属含量 60万吨。该矿成本将达 4 2 94亿美元 ,年产矿石量将达 60 0万吨。到 2 0 1 0年 ,年产量将增加 2 7～ 相似文献
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本文重点介绍了全球锆英石砂矿资源分布、主要公司锆英砂生产能力.综合世界主要研究机构全球锆英石需求预测结果,预期全球锆矿储量可供90年.全球锆英砂生产能力230万吨/年,只要利用率在53％以上,锆英砂供应量就足可满足全世界需求. 相似文献
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一、一次性能源的世界需求动态 20世纪，全球人口从17亿增加到63亿，增加2．8倍，人均能源需求量增长近3倍，为每人每年1．5吨标准燃料。2001～2007年间，全球每年的能源需求量超过110亿吨标准燃料。最近35年，全球一次性能源的年需求量就增加了近1倍，例如1975年为60亿吨，2008年则超过110亿吨。 相似文献
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越南矿产与煤炭公司（Vinacomin）2008年4月宣布,将大幅扩大对日本的煤炭出口,计划2008年向日本出口320万吨煤炭,价格是每吨260美元。该公司2007年共向日本出口煤炭230万吨,价格是每吨70美元。2008年计划出口量较2007年增长近40％,价格同时随国际行情上涨两倍多。由此也反映了全球煤炭特别是炼焦煤供应趋紧。 相似文献
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塔里木盆地遥感区域地质研究 总被引：5，自引：0，他引：5
本文着重阐述将塔里木盆地（地块）划分出“内、中、外三环体（带）”的构造新格局;提出该区存在着巨大的“环式弧形构造系统”及其相应的“环式弧形成矿带”与“环式弧形地质环境带”的新论点与新概念,揭示该区矿产资源的成矿、控矿规律,建立行之有效“多位一体”的遥感地质找矿模式;发现环绕塔里木盆地油气、钾盐、煤、铀、金属、建材及宝玉石等５个环状成矿带和罗布泊特大型钾盐矿产基地;以及塔克拉玛干大沙漠区内４大富水区,并提出塔里木地壳具“稳定之中不稳定,不稳定中有稳定”等新的认识。 相似文献
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热红外图像钾盐异常信息解释 总被引：2，自引：0，他引：2
应用不同类型和不同时相的热红外遥感图像,对罗布泊盐湖区内几种主要地物和钾盐异常区的热信息特征进行了分析、提取,探讨了盐湖区内热场变化及其意义,解释了热红外影像表征钾盐异常信息的机理,进而提出了钾盐异常信息的成因模式,认为热红外遥感技术是寻找现代盐湖钾盐异常的一种新方法 相似文献
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A Single-Pixel Imaging System for Remote Sensing by Two-Step Iterative Curvelet Thresholding 总被引：2，自引：0，他引：2
《Geoscience and Remote Sensing Letters, IEEE》2009,6(4):676-680
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High quality infrastructure is crucial to economic success and the sustainability of society. Infrastructures for services, such as transport, energy, and water supply, also have long lead times, and therefore require effective long-term planning. In this paper, we report on work undertaken as part of the UK Infrastructure Transitions Research Consortium to construct long-term models of demographic change which can help to inform infrastructure planning for transport, energy, and water as well as IT and waste. A set of demographic microsimulation models (MSM), which are spatially disaggregate to the geography of UK Local Authorities, provides a high level of detail for understanding the drivers of changing patterns of demand. However, although robust forecasting models are required to support projections based on the notion of ‘predict-and-provide,’ the potential for behavioral adaptation is also an important consideration in this context. In this paper, we therefore establish a framework for linkage of a MSM of household composition, with behavior relating to the consumption of energy. We will investigate variations in household energy consumption within and between different household groups. An appropriate range of household types will be defined through the application of decision trees to consumption data from a detailed survey produced by the UK Department of Energy and Climate Change. From this, analysis conclusions will be drawn about the impact of changing demographics at both household and individual level, and about the potential effect of behavioral adjustments for different household groups. 相似文献
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The authors apply remote sensing data to the mapping of natural envionment with a focus on environmental protection. The technique is illustrated with particular reference to a largely swampy potash-mining deposit in Belorussia which is the largest potash producer of the USSR, accounting for 54% of its total output in 1983. Translated from: Kartografirovaniye po kosmicheskim snimkam i okhrana okruzhayushchey sredy (Mapping from Space Imagery and Protection of the Environment), edited by Ye. A. Vostokova et al., Moscow: Nedra, 1983, pp. 177-195. 相似文献
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基于GIS与遥感影像的银行ATM机网点选址方法研究 总被引：1，自引：0，他引：1
本文针对当前影响ATM机布点的因素,提出了基于矢量图和遥感影像的可视化平台。首先应用门槛分析模型将区域划分为潜力区域(含有ATM机但还有布放潜力的区域)和空白区域(不含ATM机的区域),从宏观上分析区域布放的可行性,并通过计算潜力区域和空白区域内的网点消费潜力,得出适合布放ATM机的区域,然后通过点位评估模型来分析这些区域内的网点,最后评估出可以布放ATM机的网点,并以北京某公司ATM机布点选址规划应用本文的选址方法进行了实践,取得了很好的效果。 相似文献
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Efficient water-resource management is essential with regard to food security, growing populations and climate change. This is especially important for low- and middle-income (LMC) countries where food is often locally produced by traditional smallholder farming. Detailed knowledge of the spatio-temporal distribution of irrigation-water consumption provides valuable information to anticipate local food shortages and water scarcity as a result of climate variability. Yet, adequate techniques to quantify irrigation-water consumption at field level over large areas are lacking. Irrigation estimates generally have a coarse resolution making them inadequate for field-level assessments.This study developed a remote-sensing-based approach to quantify spatio-temporal patterns of irrigation-water consumption at field level using the MODIS evapotranspiration product (MOD16A2) and existing land-use maps on the spatio-temporal distribution of irrigated agriculture. Object-based image analysis was used to establish local evapotranspiration differences between irrigated and rainfed fields on a monthly basis, which are the irrigation-water consumption rates of the irrigated fields. This novel method was applied to a study area in the Central Rift Valley in Ethiopia where smallholder farming is dominant and only a few large-scale farms are present. Comparison with irrigation-water-consumption values of a local irrigation scheme showed that the monthly temporal dynamics were captured quite well, but lower values were calculated compared to the scheme's field data. Comparison with two validated remote-sensing based studies in Africa showed good agreement as irrigation-water-consumption estimates were in the same order of magnitude. Irrigation-water consumption follows the temporal rainfall pattern, i.e. irrigation practices intensify with increased water availability. Surface water is commonly used for irrigation in the study area.Our study shows that smallholder practices have a lower irrigation-water consumption compared to modern large-scale farms by approximately a factor 3. Irrigation-water consumption in the area is considerable, especially during the dry season. On average 32 % of excess water (precipitation – evapotranspiration) is consumed for irrigation. For smallholder irrigation and large-scale irrigation specifically this is 28 % and 63 % respectively.The object-based approach presented here is an operational mapping method for field-level irrigation-water-consumption over large areas. MOD16A2 is a global open-source readily-available evapotranspiration product used here although an evapotranspiration product with a higher spatial resolution might be preferred. Our approach can provide irrigation-water-consumption estimates over large areas in data-poor regions, which will increase the understanding of spatio-temporal patterns of smallholder irrigation and provide information to optimize water use. 相似文献