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休闲渔业包括海洋游钓业、观赏性渔业、淡水游钓、休闲采捕、休闲养殖、渔村生活体验等,其中海洋游钓业是最具发展前景的一个行业。 自从20世纪60年代加勒比海地区兴起海洋游钓业以来,在短短的时间内,海洋游钓业已迅速发展到欧美、亚太地区和一些经济相对较发达的沿岸国家及地区,成为滨海旅游项目中独具魅力 相似文献
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文章在浙江海洋旅游资源普查成果的基础上,通过实地调研和文献查阅,将浙江海洋旅游资源分为地文景观、海(水)域风光、生物景观、天气和气候景观、遗址遗迹、建筑和设施、旅游商品以及人文活动8个大类,并分别介绍其17个亚类和40个基本类型及其代表,指出以自然资源居多和人文资源有待进一步挖掘开发。运用最邻近分析法和基尼系数,表明浙江海洋旅游资源的空间分布特征为集中且均衡。由此提出发展浙江海洋旅游业的建议:全面深化认识,提升发展海洋旅游业战略高度;立足空间特色,科学制定海洋旅游业发展总体规划;坚持市场导向,构建海洋旅游业态产品开发体系;加强多方协同,不断增强有序推进合力。 相似文献
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基于“点-轴系统”理论的大连市海洋旅游发展研究 总被引：1，自引：0，他引：1
"点-轴系统"是最有效的国土开发模式,对区域内海洋旅游资源开发同样具有重要的现实指导意义.以"点-轴系统"理论为基础,在分析大连市海洋旅游资源概况的基础上,提出大连海洋旅游的空间发展结构模式为1个中心、3个增长极、4个发展点、2 条重点发展轴、2条发展拓展轴.形成"点"、"轴"、"面"相结合的4个海洋旅游板块的空间结构体系,实现海洋旅游一体化及其可持续发展. 相似文献
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浙江海洋旅游具有资源、市场、经济、产业等发展优势,也存在着产品主题特色不鲜明,受自然环境因素制约大、海洋旅游活动相配套要素不够健全等因素制约,文章提出了用海洋文化包装旅游产品,提升海洋旅游的品位:改善旅游设施和服务功能,以提供舒适、便捷的旅游经历;以"生态文明"理念发展循环经济.确保海洋旅游健康持续发展;应用现代技术,提高海洋旅游的开发和利用效率:优化区域结构,实现海洋旅游整体发展等转型升级策略. 相似文献
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随着舟山群岛海洋文化产业的不断开发和旅游产业的体系日益成熟,两大产业呈现出相互渗透相互融合的态势,带来了舟山海洋文化产业发展的新契机。文章阐释了产业融合的内涵和对舟山海洋文化产业发展的推动意义,剖析了舟山海洋文化产业发展的历史、现状以及所面临的缺乏文化资源转化为产能、传统文化表现手法陈旧、缺少大规模市场等问题,提出了旅游产业与海洋文化产业的融合路径和舟山海洋文化产业发展需要改造传统文化产业,创新文化产品;运用现代科技,促进海洋非物质文化旅游发展;加快发展文化内容产业,促进产业结构调整;充分运用政府引导作用,推进海洋文化产业与旅游产业深入融合;培育大型企业,扶持中小型企业,形成文化产业规模效应;加大教育投入,培养高素质人才等相关性策略。 相似文献
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海洋旅游是国际旅游业中规模最大和增长最迅速的旅游分支产业,这是21世纪人们向海洋进军,以海洋为依托推动世界经济发展的最佳途径。其中,海滨以其旖旎的风光、优美的环境、宜人的气候,日益成为人们向往的旅游目的地。与此同时,海上旅游、海底观光旅游也成为旅游体系中的热点。文章就是在此背景下,提出立体海洋旅游的概念并重申海洋旅游的重要性以及怎样实施管理。同时探索立体海洋旅游的发展与环境的协调关系,以便扩大依靠海洋资源开发消遣和旅游活动的潜力。 相似文献
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Arne Schnack-Friedrichsen Angela M. Davis Jim D. Bennell Dei G. Huws 《Marine Georesources & Geotechnology》2001,19(4):221-243
The interdependence between the seismo-acoustic properties of a marine sediment and its geotechnical/physical parameters has been known for many years, and it has been postulated that this should allow the extraction of geotechnical information from seismic data. Though in the literature many correlations have been published for the surficial layer, there is a lack of information for greater sediment depths. In this article, a desktop study on a synthetic seafloor model illustrates how the application of published near-surface prediction equations to subsurface sediments (up to several tens of meters burial depth) can lead to spurious predictions. To test this further, acoustic and geotechnical properties were measured on a number of sediment core samples, some of which were subjected to loading in acoustically-equipped consolidation cells (oedometers) to simulate greater burial depth conditions. For low effective pressures (representing small burial depths extending to around 10 meters subsurface), the general applicability of established relationships was confirmed: the prediction of porosity, bulk density, and mean grain size from acoustic velocity and impedance appears generally possible for the investigated sedimentary environments. As effective pressure increases through, the observed relationships deviate more and more from the established ones for the near-surface area. For the samples tested in this study, in some instances increasing pressure even resulted in decreasing velocities. There are several possible explanations for this abnormal behavior, including the presence of gas, overconsolidation, or bimodal grain size distribution. The results indicate that an appropriate depth correction must be introduced into the published prediction equations in order to obtain reliable estimates of physical sediment properties for greater subsurface depths. 相似文献
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Shigehisa Nakamura 《Marine Geodesy》2000,23(1):55-61
Specific properties of the interannual sea level variations and annual tides in the Northwestern Pacific were studied. Several tide stations were monitored. The monthly mean sea level for the year of 1995 was analyzed at each tide station. A seismic event in 1995, some tectonic activity around the subject area, and the Kuroshio (the oceanic western boundary current) may possibly contaminate results which would have occurred from the astronomical annual tide alone. 相似文献
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The effect of different fixation and storage protocols on the flow cytometric (FCM) simultaneous analysis of bacterioplankton and phytoplankton in coastal seawater samples (Mediterranean coastal lagoons) was investigated. FCM measurements (cell number, fluorescence and scatter characteristics) were obtained through DAPI staining. Three fixatives [glutaraldehyde (GA), formaldehyde (FA) and paraformaldehyde (PFA)] and two storage (3 months duration) methods (5 °C and −196 °C) were tested. Two dominant populations were detected in studied samples: bacteria and eukaryotic picophytoplankton. Adding fixatives (2% final concentration) appears necessary to obtain FCM exhaustive counts of all the bacteria and phytoplanktonic cells. This was related to the permeation effect of fixatives which allowed a better DAPI staining of the cells. Maximum fluorescence, i.e. optimal staining of the cells was obtained with FA or PFA, and significant lower fluorescences with GA. Fixed samples stored at 5 °C induced rapid cell loss. Only storage in liquid nitrogen of samples fixed with FA or PFA, allows mid-term (≥4 months) preservation of bacteria or picophytoplankton cell numbers, and limited evolution of DAPI-induced fluorescence and scatter characteristics. 相似文献
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《海洋学报(英文版)》2014,(9):F0003-F0003
<正>Acta Oceanologica Sinica(AOS)is a comprehensive academic journal edited by the Editorial Committee of Acta Oceanologica Sinica and is designed to provide a forum for important research papers of the marine scientific community which reflect the information on a worldwide basis.The journal publishes scholarly papers on marine science and technology,including physics,chemistry,biology, 相似文献
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The relationship between the flux of exotic benthic foraminiferal tests (i.e. tests which are supplied from open-sea sources alone) in a tidal inlet and that of bulk sediment was analysed, which can be expressed as two first-order linear equations. According to this relationship, in order to determine net sediment transport directions in the entrance, the test concentration in surficial sediments of the tidal basin can be compared against a ‘ critical level ’. The critical level is determined for the conditions that no net transport of bulk sediment is present within the entrance. If the observed concentration (averaged over the tidal basin) is higher than the simulated critical level, then the net sediment transport is directed to landward. This method is applied to the analysis of net sand transport at Christchurch Harbour, a tidal inlet system located in southern England. In this investigation, concentrations of exotic foraminiferal tests in the surficial sediments of the tidal basin and ebb tidal delta area were obtained from the analysis of sea-bed sediment samples. A series of probable critical levels were calculated based upon the data sets with regard to: (1) sediment discharge from the rivers; (2) magnitude of sediment discharge within the entrance during the ebb; (3) the test concentration outside the harbour; (4) the thickness of the moving layer; and (5) two parameters associated with dispersive processes. The results show that the concentration in the tidal basin sediment is higher than a number of simulated critical concentrations for representative cases. Consequently, the high level of the concentration of exotic benthic foraminiferal tests within the harbour should be explained as a result of landward net transport of sands within the entrance. 相似文献
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Rahul Sharma 《Marine Georesources & Geotechnology》2000,18(3):237-250
Observations on seafloor features from subbottom profiling and seabed photography data show that the undisturbed and natural conditions before the benthic disturbance undergo a substantial change after operation of the disturber. The effects can be seen in the form of deep trenches and grooves, formed by the action of the sleds and the pumping of the sediment along its path, as well as sediment piles on either side of the track. Biological traces such as fecal coils, casts, tubes, burrows, and trails get obliterated in the areas of disturbance and resedimentation. The smooth, uniform nature of the seafloor observed in predisturbance phase shows microtopographic changes in and around the disturbed area as a result of sediment excavation and resettlement. Vertical mixing as well as lateral transport of sediment alter the geological, biological, physical, and chemical conditions on the seafloor, which need to be monitored over time to assess the process and the time taken for restoration of environmental conditions. 相似文献
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Vance P. Vicente 《Marine Ecology》1989,10(2):179-191
Abstract. Long-term changes in the distributional patterns of commercial sponges ( Spongia spp. and Hippospongia spp.) within the West Indian Region indicates that: 1) commercial sponges had a widespread distribution throughout the whole West Indian Region and were ubiquitous in very shallow water until about the first half of the present century; 2) they were fished commercially not only in the traditional northern Caribbean sites (Florida, Gulf of Mexico, Bahamas) but also in the Greater ( e. g. , Hispaniola, Jamaica) and Lesser Antilles; and 3) they became extinct throughout most of the Lesser Antilles ( e. g. , Puerto Rico, Vieques, St. Thomas) sometime during the first half of this century. Mortalities of spongiids within the Antilles were found to differ from other marine mortalities in that: 1) species disappeared from a large region; 2) species vanished from different habitats and depths; and 3) natural populations never recovered. Species richness patterns suggest that commercial sponge genera ( Spongia and Hippospongia ) evolved under slightly cooler elimatic conditions than those found at present, and that these extinctions occurred as a direct or indirect effect of positive thermal anomalies in sea surface and atmospheric temperatures between 1900–1950. The concept that species diversity is stable on a regional scale is questioned. 相似文献
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The behaviour of an axially pre-loaded cylindrical member of an offshore structure, hit by a supply ship, has been investigated. The effects of axial pre-loading on the dynamic properties of members, the extent of damage and propagation of dynamic instability in the tubular members have also been investigated. Numerical models have been validated using available experimental data from the literature although these are mostly static with no pre-loading. Axial pre-loading was found to change the dynamic characteristics of some cylindrical members quite dramatically while it had no significant effect on others. The study examined whether there was any change in the behaviour between local and global modes when the loading was dynamic rather than static. The effect of damping on the dynamic instability of axially pre-loaded tubes under lateral dynamic loads was also studied. It was observed that for some geometries the quasi-static response can be used to define the boundary between bounded and unbounded dynamic responses. The main contribution of this study, compared with previous investigations reported in the literature, is that both pre-loading and dynamic effects have been included. 相似文献