共查询到20条相似文献，搜索用时 343 毫秒
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河南省是铝土矿资源大省，同时也是铝工业大省。目前，全省累计查明铝土矿资源储量约6亿吨，保有铝土矿资源储量约5亿吨(其中储量1.8吨，位居全国各省第2位，氧化铝生产能力约210万吨，2003年实际产量约230万吨，位居全国各省第1位。 相似文献
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略论我国资源环境犯罪问题 总被引：1，自引：0，他引：1
资源环境问题是人类经济社会发展进程中的重要伴生问题，广义是包括一切形式的资源环境情况恶化或是对生物圈、大气圈造成的一切不利影响。人类社会经济社会的发展，总是需要消耗一定的资源环境作为支撑和依托，并且这种消耗，对于资源环境而言具有负面意义。虽然人类在与自然进行的漫长斗争中，取得了一次又一次的辉煌胜利，然而每一次辉煌胜利的背后，自然界都以它特有的形式报复了人类。 相似文献
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东海区鲳鱼资源利用现状分析 总被引：7，自引：0，他引：7
对东海区鲳鱼近年群体组成变化及银鲳生物学特性变化来分析目前鲳鱼资源利用状况，结果表明：一方面，虽然近年鲳鱼产量大幅增加，但其平均体重、优势叉长组成及年龄组成均出现明显下降，资源状况日益恶化；另一方面，１龄鱼已占渔获的９３．６８％，目前捕捞现行点开捕年龄ｔｃ＝１和捕捞死亡系数Ｆ＝２．５１，单位补充量繁殖力相对百分比Ｐ〈１．９％，单位补充量渔获量为７０ｇ／尾，均显示已处于严重的生物学型捕捞过度，建议渔 相似文献
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黑龙江省耕地后备资源相对丰富，根据2006年耕地后备资源监测调查结果显示，我省国家级耕地后备资源达26．1万公顷（单片规模可开垦耕地后备资源大于200公顷，可复垦耕地后备资源大于66．7公顷），数量较多、质量较好、分布相对集中，我省耕地后备资源的数量和质量水平居全国前列。 相似文献
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Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area. 相似文献
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正Rapid changes of Arctic sea ice cover have been in the focus of the international climate research community in recent years.Quite a few of nations have completed a large number of related surveys and research projects in the Arctic Ocean.Up to now,China has performed six research cruises to the Arctic Ocean resulting in a significant volume of research output.Improved knowledge on the atmospheree-sea ice-ocean interactions in the Arctic is a 相似文献
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Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter. 相似文献
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The GRV 024516 and GRV 024517 meteorite samples collected from Grove Montains,Antactica are ureilite and H5 ordinary chondrite,respectively.Based on the study of mineralogy-petrology,the cosmic-ray exposure ages and gas retention ages of these two meteorites were determinated and calculated.Their cosmic-ray exposure ages are 33.3 Ma,51.7 Ma,and gas retention ages are 1936.8 Ma and 3720 Ma,respectively.The ureilite contains diamond,graphite and amorphous C,which are mainly carrier of noble gases indicating obviously shock metamorphism effects,which induced 40Ar partial loss.The H5 chondrite indicates thermal metamorphism of parent body,its gas retention age fall the range between 3220 Ma and 4510 Ma of the least shocked H5 chondrites 相似文献
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《极地研究(英文版)》2014,(3)
正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied 相似文献
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《山地科学学报》2014,(4):I0004-I0009
<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet. 相似文献
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《山地科学学报》2014,(4)
<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by 相似文献