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21.
资源安全供应是保障国民经济持续健康发展的必要条件。阐述了发达国家资源安全供应的3个模式:比较优势模式、贸易一投资模式和系统论模式。通过实例,就模式的作用机理进行了简要分析。结合我国的实际情况,借鉴发达国家资源安全供应的经验,就我国资源的安全供应提出了4个方面的建议。 相似文献
22.
我国资源卫星资料应用对空间分辨率的需求 总被引:6,自引:0,他引:6
在简介了我国3种对地遥感卫星的基础上,归纳出我国主要应用领域对遥感图像空间分辨率的需求状况。 相似文献
23.
重点探讨了与柴达木资源开发相关的五个问题。一是柴达木在青海发展和西部地区资源开发中的地位和作用问题 ;二是格尔木市发展中的几个问题 ,重点探讨了格尔木的城市性质 ,格尔木在国家资源安全中的作用和格尔木进一步发展的问题 ;三是讨论了西部大开发中 ,资源的地位和作用问题 ;四是讨论了投资补偿理论和柴达木盆地矿业城市可持续发展问题 ;最后探讨了柴达木资源综合利用和工业可持续发展问题 相似文献
24.
陶器资源——江西红土岩开发 总被引:4,自引:0,他引:4
依据江西红土岩物质组成特征及与宜兴紫砂土的相似性,对江西红土岩进行了较系统的陶器实验与研究。江西红土岩系的化学成分、矿物成分及工艺特征适合陶器要求。按其分布规律和物质组成特征可分成两类:酸性红土岩和碱性红土岩。在详细分析两类岩系工艺性质的基础上,对江西红土岩这一陶器资源进行了产品开发。 相似文献
25.
Gregory T. Spanski 《Natural Resources Research》1992,1(2):163-183
Faced with an ever-increasing diversity of demand for the use of public lands, managers and planners are turning more often to a multiple-use approach to meet those demands. This approach requires the uses to be mutually compatible and to utilize the more valuable attributes or resource values of the land. Therefore, it is imperative that planners be provided with all available information on attribute and resource values in a timely fashion and in a format that facilitates a comparative evaluation.The Kootenai National Forest administration enlisted the U.S. Geological Survey and U.S. Bureau of Mines to perform a quantitative assessment of future copper/silver production potential within the forest from sediment-hosted copper deposits in the Revett Formation that are similar to those being mined at the Troy Mine near Spar Lake. The U.S. Geological Survey employed a quantitative assessment technique that compared the favorable host terrane in the Kootenai area with worldwide examples of known sediment-hosted copper deposits. The assessment produced probabilistic estimates of the number of undiscovered deposits that may be present in the area and of the copper and silver endowment that might be contained in them.Results of the assessment suggest that the copper/silver deposit potential is highest in the southwestern one-third of the forest. In this area there is an estimated 50 percent probability of at least 50 additional deposits occurring mostly within approximately 260,000 acres where the Revett Formation is thought to be present in the subsurface at depths of less than 1,500 meters. A Monte Carlo type simulation using data on the grade and tonnage characteristics of other known silver-rich, sediment-hosted copper deposits predicts a 50 percent probability that these undiscovered deposits will contain at least 19 million tonnes of copper and 100,000 tonnes of silver. Combined with endowments estimated for identified, but not thoroughly explored deposits, and deposits that might also occur in the remaining area of the forest, the endowment potential increases to 23 million tonnes of copper and 190,000 tonnes of silver. 相似文献
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27.
The Geo-anchored method, based on a moment-type estimator, has been developed for estimating parent population properties from a successive sample of discoveries. By substituting the expectation of the waiting time z
(n+1) of the (n + 1)
th
discovery to occurrence for an unknown parameter in the anchored method, the Geo-anchored method allows estimation of inclusion probabilities directly from observed data, thus eliminating the need for a priori selection of a value of N, R, or some other feature of the parent population. Because direct estimation of N and R requires an ordered sample, the Geo-anchored method is more sensitive to the data-generating process than the anchored method. This paper presents a sensitivity study on the Geo-anchored method. The test is based on simulated discovery sequences with different assumptions regarding discovery efficiency, exploration maturity, and the shape of the parent field size distribution. As a reference for comparison, estimates from the Horvitz–Thompson estimator also are presented. 相似文献
28.
29.
The paper examines the prospects for resource-based development in the Russian Far East. It adopts a critical perspective on the potential for resource-based development by examining problems with Far East resource industries, specifically by looking at the experience of the other resource economies more generally. In particular, it highlights the new geo-economic context for resource development in the Far East of Russia as the world economy approaches the much touted, and now questioned, ‘Pacific Century’. 相似文献
30.
本文初步总结了市场经济国家的商业性地勘工作主要特点,对我国今后开发商业性地勘地作所要解决的问题做了探讨,并就冶金地质队伍如何更好地适应今后商业性地质工作提出了建议。 相似文献