我国矿产资源耗竭特点与供应安全保障

矿产资源是有限的、可耗竭的。我国矿产资源的耗竭特点突出表现为单位国民产出的资源消耗强度大,随着工业化进程的推进,大宗主导型矿产的需求缺口也呈增大的趋势:同时重要矿产储量的消耗与增长也越来越不协调。为此,在调整产业结构的基础上,我们应当建立可持续的资源开发利用体系与资源集约型的国民经济体系,实行有效的区域资源政策,加大资源的综合勘查力度,提高资源利用效率,促进矿产资源的二次开发与循环利用;充分利用海外资源与市场,在全球范围优化配置资源,建立稳定、可靠、高效的矿产资源保障机制。     

矿产篇

我国已为世界石油消费增长最快，仅次于美、日的第三大石油消费国，而且，我国石油接替资源和后备可采储量日趋紧张。今后10～15年，如果没有重大发现或技术上的突破，我国原油将面临严重供不应求的窘境。到2015年，将有一半原油需要进口。令人担忧的是，我国至今还没有一个完整的石油战略储备体系。随着石油进口量的迅猛增加，建立国家石油战略储备体系刻不容缓。     

中国石油生产的展顾

本文分析了中国石油生产近20年变化的原因,对一些学者认为80年代中国会成为超级产油大国,后又悲观断定80年代中国可能变成石油净进口国作了评述。同时对90年代中国石油生产前景作了初步展望。     

中国海洋学会理事会换届，国家海洋局局长王曙光当选为理事长

9月16日,中国海洋学会第六次全国会员代表大会暨2005年学术年会在宁夏回族自治区银川市隆重开幕。会议为期两天,国家海洋局局长王曙光、国家海洋局副局长陈连增、宁夏回族自治区党委书记陈建国、中国海洋学会第     

Effects of Different Diets on the Dietary Attractability and Selectivity of Chinese Shrimp, Fenneropenaeus chinensis

Attractabilities of different diets and dietary selectivity of Chinese shrimp, Fenneropenaeus chinensis were studied through behavior observation and feeding experiment, respectively. The five diets used in the experiment are: Fish Flesh (FF), Shrimp Flesh (SF), Clam Foot (CF), Polychaete Worm (PW), and Formulated Diet (FD). No significant differences of attractability exist between any two different diets when every two natural diets or all five diets are provided simultaneously. On the other hand, significant differences of attractability exist between FD and every single natural diet when they are provided simultaneously. Results of behavioral observation indicate that natural diets are more attractive than FD. In feeding experiment, Chinese shrimp has distinct selectivity on different diets. It positively selects CF and PW, negatively selects FF and SF, and excludes FD absolutely. The results of the present studies indicate that the dietary selectivity of shrimp was based not only on the attractabilities of the diets, but also on the responses such as growth and food conversion.     

嫦娥计划及其意义

神州六号的顺利升空，无疑是近段时间大家讨论的热点。自20世纪60年代美国和苏联发射载人宇宙飞船后，中国和印度竞争的焦点则集中于发射无人宇宙飞船。中国和印度分别启动了名为“嫦娥工程”和“无人月球探测计划”的月球探测计划，其目标均为2007—2008年进入月球轨道。其实中国并不满足于仅仅进入月球轨道，其计划是在2012年前，向月球表面发射无人宇宙飞船，获取含有14种有用元素的月球岩石标本，     

谱写国土资源宣传工作新篇章

“要全面提升国土资源宣传工作水平!”这既是国土资源部党组发出的号召,同时也是广大国土资源干部职工和社会各界的强烈呼声.我们应积极响应,迅速行动,全面落实.     

TL dating of loess in China

TL ages of 56 loess samples collected from Xinjiang and the middle reaches of the Yellow River were determined by using fine-grained quartz and man-made light source bleaching techniques.The results indicate that :1.The well-preserved loess sections in Xinjiang began depositing 400000 a ago.The loess/paleosol series may be comparable with that observed in the middle reaches of the Yellow River but the depositing time was probably delayed by 30000-50000a.2.The bottom boundary age of the Malan loess varies from one place to another.The TL dates can be divided into two group:70000-130000 a and 30000-50000 a.The TL data are con-sistent with the appearance of two warmer climate periods since the Pleistocene,indicating obvious regional differences in stratigraphic development of loess,i.e.,paleosol occurred in the warm climate period in the same location,but loess was deposited in other locations.The initial age of loess deposition tends to become older from west to east and from south to north .In contrast ,the cold cli-matic belt showed an opposite trend.The TL ages of loess provide strong evidence for the Quaternary stratigraphy throughout geological times and the shift tendency of climatic belt.3.The depositing rate of the Malan loess along the middle reaches of the Yellow River varies from place to place but the TL age shows a linear relationship with the depositing thickness.The de-positing rate of loess in the north is higher than that in the south,suggesting that loess materials are derived from desert areas of northern China.     

中国南部二叠、三叠纪“混生生物群”及二叠、三叠系界线

本文系统描述了中国南部二叠、三叠纪“混生生物群”。根据笔者的统计,目前巳经发现有“二叠纪型”分子36属53种与三叠纪菊石、双壳类、牙形剌共生。 笔者认为中国南部可以以牙形剌Anchignathodus parvus 的出现作为三叠系的底界,双壳类Pteria ussurica variabilis,菊石 Hypophiceras的出现可以作为三叠系开始的辅助标志。文中还将这一界线与世界上其它地区的二叠、三叠系界线进行了对比。     

1966年邢台7.2级地震的构造背景和发震构造

本文根据石油地质勘探的最新资料和元-济人工地震地壳测深剖面相应地段重新解释的结果,分析了邢台7.2级地震的构造背景和发震断裂。研究结果表明,7.2级地震震中位于束鹿断陷盆地南部次凹的东缘,该次凹发育在由新河断裂等4条缓倾铲形正断裂分制围限地台盖层而成的“斛”状构造块体上,块体之下的地壳中存在两条倾向相反的高角度断裂;地震与断陷主断裂及其控制的断陷盆地并非是简单的对应关系,7.2级地震的发震断裂不是单一的缓倾铲形新河断裂或其下方的高角度的F_3断裂和深部的东断裂,而是它们的组合,且高角度断裂是发震断裂的主要部分