中国空间物理学学科发展战略研究报告     

中国空间物理学学科发展战略研究组 《地球科学进展》1996,11(2):140-150

从战略高度论述了空间物理学在认识人类生存环境、航天活动、经济发展中的重要地位和战略意义；以科学的态度分析了空间物理的发展史、现状和趋势；根据学科发展与我国国情相结合的原则提出了长期、中期和近期空间物理学的战略目标、战略重点和鼓励研究的课题以及实现战略目标的基本措施。  相似文献   

开发广东省空中水资源的战略思考   总被引：1，自引：3，他引：1  

杜尧东  余勇  林继生 《广东气象》2003,(3):40-43

从干旱和水资源状况出发，探讨了广东省开发空中水资源的必要性。从理论、技术、实践和人工增雨潜力等方面分析了广东省实施人工增雨，开发空中水资源的可行性。结合目前人工增雨现状和存在的问题，提出了广东省开发空中水资源的战略对策。  相似文献   

试论与地勘经济增长模式相适应的人才战略     

彭良民  段贤军 《湖南地质》2002,21(3):228-232,240

地勘单位产业结构调整对其经营人员的素质提出了新的挑战，人才作为最重要的人力资源，必须适应产业结构调整的需要。地勘单位应实施与地勘经济增长模式相适应的人才战略，进行人才结构和职位的科学设计，通过吸收和培养人才，做到合理有效地使用人才。  相似文献   

Social responsibility in shipping     

Richard Goss 《Marine Policy》2008

This paper discusses the effects of competition in shipping, noting recent gains for the consumers of shipping services, a variety of strategies for investors in shipping and some of the effects on seamen. The dangers of monopolistic effects in ports are described and there is a discussion of the externalities involved in maritime safety, including pollution. The current regulatory regime, particularly the involvement of classification societies, is criticised and it is suggested that lessons can be learnt from other industries.  相似文献   

How well do ecosystem indicators communicate the effects of anthropogenic eutrophication?     

Abigail McQuatters-Gollop  Alison J. Gilbert  Laurence D. Mee  Jan E. Vermaat  Yuri Artioli  Christoph Humborg  Fred Wulff   《Estuarine, Coastal and Shelf Science》2009,82(4):583-596

Anthropogenic eutrophication affects the Mediterranean, Black, North and Baltic Seas to various extents. Responses to nutrient loading and methods of monitoring relevant indicators vary regionally, hindering interpretation of ecosystem state changes and preventing a straightforward pan-European assessment of eutrophication symptoms. Here we summarize responses to nutrient enrichment in Europe's seas, comparing existing time-series of selected pelagic (phytoplankton biomass and community composition, turbidity, N:P ratio) and benthic (macro flora and faunal communities, bottom oxygen condition) indicators based on their effectiveness in assessing eutrophication effects. Our results suggest that the Black Sea and Northern Adriatic appear to be recovering from eutrophication due to economic reorganization in the Black Sea catchment and nutrient abatement measures in the case of the Northern Adriatic. The Baltic is most strongly impacted by eutrophication due to its limited exchange and the prevalence of nutrient recycling. Eutrophication in the North Sea is primarily a coastal problem, but may be exacerbated by climatic changes. Indicator interpretation is strongly dependent on sea-specific knowledge of ecosystem characteristics, and no single indicator can be employed to adequately compare eutrophication state between European seas. Communicating eutrophication-related information to policy-makers could be facilitated through the use of consistent indicator selection and monitoring methodologies across European seas. This work is discussed in the context of the European Commission's recently published Marine Strategy Directive.  相似文献   

EU marine policy on the move: The tension between fisheries and maritime policy     

L. van Hoof  J. van Tatenhove 《Marine Policy》2009

In the past decade, the European Commission has developed the Marine Strategy Directive and the Maritime Policy. Both policies aim at governing the marine environment; yet the two policies have a differing signature in policy formulation and implementation. From a fisher's perspective these policies present a change in institutional setting; major policy measures no longer descend from the EU Common Fisheries Policy alone, but increasingly are derived from general environmental policy developments. In this paper, the policy arrangement approach is used to analyse the differences between the two maritime policies, and the way in which they can affect fisheries management.  相似文献   

Competitive adsorption,release and speciation of heavy metals in the Yellow River sediments,China   总被引：2，自引：0，他引：2  

Qingyun Fan  Jiang He  Hongxi Xue  Changwei LÜ  Ying Liang  Saruli  Ying Sun  Lili Shen 《Environmental Geology》2007,53(2):239-251

The competitive adsorption and the release of selected heavy metals and their speciation distribution before and after adsorption in the Yellow River sediments are discussed. The adsorption of metals onto sediments increases with increasing pH value and decreases with increasing ionic strength. The competitive coefficient K _c and the distribution coefficient K _d are obtained to analyze the competitive abilities of selected heavy metals, which are ranked as Pb > Cu >> Zn > Cd. The competition among selected heavy metals becomes more impetuous with increasing ion concentration in water. Speciation analysis was done by an improved analytical procedure involving five steps of sequential extraction. Cu, Pb and Zn were mainly transformed into the carbonate-bound form (50.8–87.7%) in adsorption. Most of (60.7–77.3%) Cd was transformed into the exchangeable form, and the percentage of carbonate-bound Cd was 19.7–30.4%. The release reaction was so quick that the release capacity of selected heavy metals from sediments to aqueous solution reached half of the maximum value only in 30 s. As opposed to adsorption, the release capacities of selected heavy metals were ranked as Cd > Zn >> Cu > Pb. In this study, Cd produces the most severe environmental hazards, because its concentration in the release solution is 85.8 times more than the human health criteria of US EPA.  相似文献   

宁夏湿地生态旅游可持续开发     

全晓虎  宋春玲 《湿地科学与管理》2007,3(3):23-27

宁夏湿地类型丰富多样,拥有典型的湿地生态旅游景观和湿地动植物资源,且大多数湿地主要分析在银川市以及经济较发达的宁复沿黄城市带,湿地旅游资源的开发具备了良好的客源基础和前景。在调查评价宁夏湿地生态旅游资源与环境的基础上,进行该区湿地生态旅游可持续开发的SWOT分析,提出了开发对策和建议。  相似文献   

镇江市矿山企业及其结构分析     

华建伟  高德云  顾国华 《江苏地质》2000,24(3):176-180

着重介绍了镇江市矿山企业的经营现状,并对其矿业结构和所有制结构下的主要经济指标作了初步剖析,从而对全市的矿业特征有了更深层次的了解。  相似文献   

梅州市城镇化发展若干问题的探讨   总被引：3，自引：0，他引：3  

罗迎新 《热带地理》2006,26(4):339-343,348

通过专家咨询与调研,运用定性与定量综合分析方法,阐述了梅州市城镇化发展经历起步、波动徘徊、恢复、提高发展4个阶段基本特征,分析了规划认识不足,基础设施建设滞后,产业结构不合理,城镇管理水平低等不利因素对梅州市城镇化发展的影响,认为实施城镇化发展战略是创新"开放梅州"的环境基础,是创新"工业梅州"的重要载体,是创新"生态梅州"的重要途径,是创新"文化梅州"的孕育温床,提出了梅州市城镇化发展的思路,包括制订城镇发展规划;优化城镇空间结构,建立城镇体系;创新城市管理制度,实施"经营城市"策略;重视文化遗产承传与  相似文献