French marine technology policy : Industrializing ocean depths     

Daniel Spagni  Luke Georghiou  Michael Gibbons 《Marine Policy》1985,9(4):280-291

This paper outlines the structure of the institutions involved in scientific and technological development in France. It points to new trends in French marine policy, and gives details of the country's offshore petroleum technology and nodule mining.  相似文献   

东北区生态旅游资源的开发与保护   总被引：1，自引：0，他引：1  

陈娟  李煜华  陶永波 《海岸工程》2002,21(1):51-56

生态旅游作为一种新兴的旅游型式正显示出强大的发展势头,东北区作为我国生态旅游资源十分丰富的地区,以其分布的广泛性、类型的多样性、资源的独特性在旅游开发中具有一定的地位.该区应该从本身的资源特点出发,以保护为基础进行合理的开发.  相似文献   

山东沿海旅游业可持续发展对策研究   总被引：4，自引：1，他引：4  

盛红  董玉明 《海岸工程》2001,20(4):63-68

滨海旅游是旅游活动的重要组成部分 ,在我国具有广阔的发展潜力。在讨论了山东沿海旅游业发展中存在的问题的基础上 ,指出发展滨海旅游与滨海和海洋环境之间的相关关系 ,探讨了使山东沿海旅游业可持续发展的主要对策  相似文献   

The recreational fishery off Majorca Island (western Mediterranean): some implications for coastal resource management   总被引：3，自引：0，他引：3  

Morales-Nin  Beatriz; Moranta  Joan; Garcia  Cristina; Tugores  Maria Pilar; Grau  Antoni Maria; Riera  Francisco; Cerda  Margalida 《ICES Journal of Marine Science》2005,62(4):727-739

  相似文献   

渭南市旅游资源管理评价信息系统的设计与实现   总被引：1，自引：0，他引：1  

徐映雪  任志远  李玲芬 《测绘科学》2008,33(4)

旅游资源单体作为旅游资源普查的重要成果,具有数量多、分布广、资料丰富等特点。利用计算机对旅游资源普查成果资料进行集中管理、分析、评价,对旅游资源的合理规划利用和旅游业的跨越式发展具有重要意义。本研究以组件式地理信息系统软件为基础平台,以GIS技术、数据库技术和模块设计技术为基本技术支持,设计开发了渭南市旅游资源管理评价信息系统,对其需求分析、体系结构、数据库建设及功能实现进行了详细探讨。  相似文献   

石家庄市矿产资源开发利用有关问题讨论          下载免费PDF全文

王健  黄华芳 《地质找矿论丛》2008,23(2):174-176

矿产资源的开发利用促进了石家庄的社会经济发展,但是粗放和无序的矿业活动也会对生态环境和社会环境产生负面影响,进而成为阻碍经济社会发展的不利因素.文章针对石家庄矿产资源开发利用中存在的主要问题,提出了合理开发利用建议.  相似文献   

Numerical Modelling of Dissolving and Driving Exploitation of Potash Salt in the Qarhan Playa——A Coupled Model of Reactive olute Transport and Chemical Equilibrium in a Multi-component Underground Brine System     

LI Wenpeng  LIU Zhenying 《《地质学报》英文版》2008,82(5)

Firstly, the macroscopic chemical equilibrium state of a series of chemical reactions between intercrystal brine and its media salt layer (salt deposit) in Qarhan Salt Lake was studied by using the Pitzer theory. The concept of macroscopic solubility product and its relation with accumulated ore dissolving ratio were presented, which are used in the numerical model of dissolving and driving exploitation of potassium salt in Qarhan Salt Lake. And secondly, with a model forming idea oftransport model for reacting solutes in the multi-component fresh groundwater system in porous media being a reference, a two-dimensional transport model coupled with a series of chemical reactions in a multi-component brine porous system (salt deposits) was developed by using the Pitzer theory.Meanwhile, the model was applied to model potassium/magnesium transport in Qarhan Salt Lake in order to study the transfer law of solid and liquid phases in the dissolving and driving process and to design the optimal injection/abstraction strategy for dissolving and capturing maximum Potassium/Magnesium in the mining of salt deposits in Qarhan Salt Lake.  相似文献   

Numerical Modelling of Dissolving and Driving Exploitation of Potash Salt in the Qarhan Piaya——A Coupled Model of Reactive Solute Transport and Chemical Equilibrium in a Multi-component Underground Brine System     

LI Wenpeng 《《地质学报》英文版》2008,(5)

Firstly,the macroscopic chemical equilibrium state of a series of chemical reactions between intercrystal brine and its media salt layer (salt deposit) in Qarhan Salt Lake was studied by using the Pitzer theory.The concept of macroscopic solubility product and its relation with accumulated ore dissolving ratio were presented,which are used in the numerical model of dissolving and driving exploitation of potassium salt in Qarhan Salt Lake.And secondly,with a model forming idea of transport model for reacting solutes in the multi-component fresh groundwater system in porous media being a reference,a two-dimensional transport model coupled with a series of chemical reactions in a multi-component brine porous system (salt deposits) was developed by using the Pitzer theory. Meanwhile,the model was applied to model potassium/magnesium transport in Qarban Salt Lake in order to study the transfer law of solid and liquid phases in the dissolving and driving process and to design the optimal injection/abstraction strategy for dissolving and capturing maximum Potassium/ Magnesium in the mining of salt deposits in Qarban Salt Lake.  相似文献   

浅析长白山自然保护区旅游发展中的生态环境保护问题     

王慧玲 《吉林地质》2008,27(2)

长白山自然保护区是我国建立较早的和典型的自然保护区之一,其主要功能是进行自然生态环境的保护。但是,为了克服保护资金短缺境况,长白山自然保护区将发展旅游业作为生态环境保护工作资金支持的一条途径,而旅游业曾长期被认为是对生态环境影响微乎其微的产业,但自长白山开始发展旅游业以来,经济效益的实现似乎掩盖了原本的生态环境保护目标。本文在分析了长白山旅游发展对生态环境造成的负面影响之后,提出了一系列在长白山旅游发展过程中生态环境的保护措施,以期兼顾长白山自然保护区发展和保护两大目标的实现。  相似文献   

天津市地下水开采对地面沉降影响的多元回归分析   总被引：1，自引：0，他引：1  

马锋  杨发俊  陈润桥  李亚平 《中国地质灾害与防治学报》2008,19(2):63-66

地下水的过量开采是天津市引起地面沉降的主要原因。因此天津市提出了“压缩地下水开采量”、“地下水人工回灌”、“调整地下水开采层次”等控制地面沉降的3大技术措施。经过多年的努力,控制地面沉降效果明显。如何解决地下水开发与控制地面沉降的关系,更好的贯彻这3大技术措施,是该文编写的初衷。即在开采同样地下水量的情况下,如何使地面沉降量最小;或在地面沉降量容许的情况下,如何开采最大量的地下水。压缩地下水开采量是治理地面沉降的根本措施,亦即如何压缩采水量或调整开采层次会达到最好效果。论文对天津市某区各个地下水开采层的多年累计开采量、累计沉降量进行数据统计分析,建立了该地区累计沉降量及各个地下水开采层的多元相关方程。在此基础上,分析了各个地下水开采层对地面沉降影响的相关程度。以此为该区控制地面沉降的提供依据。  相似文献