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为了深入研究人类活动对舟山群岛的影响，促进人与海岛的和谐发展，文章分析舟山海岛生态环境面临的压力、人类活动类型及对海岛生态影响方式、人类活动与海岛生态系统的相互效应，并提出舟山海岛可持续发展对策。研究结果表明：舟山海岛生态环境面临着污水固废污染、人口密度和用地结构变化的压力，人类目前对舟山海岛的开发活动主要以旅游开发、港口建设、工业开发、海岸工程、渔业开发及其相关产业为主，这些开发方式对海岛地形地貌、海岛岸线、海岛生物物种和淡水等的影响也不同。通过研究分析，人类与海岛生态系统是密不可分的整体，彼此相互依赖，相互制约。未来舟山预构建“海岛生态系统健康稳定、人类经济社会稳步发展”的可持续发展局面需完善管理体制机制、强化国土空间规划引领、开发利用清洁能源、加强污水固废治理、加大科研投入力度、加强环保教育宣传。 相似文献
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海岛民宿旅游作为一种重要的海洋旅游资源,在海洋生态旅游中受到广泛关注。海岛民宿包含海岛和地方文化特色,具有很重要的开发和保护价值。舟山依托海钓文化、渔文化、沙文化、海岛村社文化和佛文化等优势,开发了不同类型的海岛民宿旅游资源,取得了较好的经济社会效益。但是,也存在同质化建设、经营管理简单粗放和政策扶持力度有限等问题。文章针对问题提出延伸产业链条、丰富旅游产品,融合发展、错位发展,适度有序开发、保护生态环境以及加强管理、提升海岛民宿旅游品质等对策,以期促进舟山海岛民宿旅游业的发展。 相似文献
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陆岛联动发展对提升海岛综合价值和推进陆海统筹战略具有重要意义.以舟山市为例,基于多源遥感影像、POI数据、景观格局梯度分析和相关性分析,探讨了陆岛连通工程对海岛产业用地演变的影响及其时空格局特征.主要结论如下:(1) 2010-2018年期间,舟山市陆域用地面积总体扩张,其中第一产业用地递减,第二、三产业用地迅速增加,产业用地转换频繁复杂.(2)海岛产业用地演变呈显著时空差异性.第一产业用地分布逐渐分散化、破碎化,重心向东北方向转移.第二产业用地集中于本岛沿岸并向外围邻近小岛辐射,其重心转移最为明显,趋向西北方.第三产业用地呈现双核多点分布特征,其中本岛南部城市核心区集聚扩张,在外围涌现零星增加点,其重心持续向西北方转移.(3)样带梯度分析表明2010-2015年间舟山海岛产业用地景观指数变化更高,而市中心产业用地景观格局变化较少,随着离市中心距离增加景观指数变化增强,在两端的金塘岛和朱家尖岛出现明显波动.海岛沿岸第二、三产业用地景观格局变化剧烈.(4)舟山海岛产业用地景观变化与跨海大桥建设、岛内交通网络、距离海岸线等地理因素呈现显著相关性和时空差异性,跨海大桥对第一产业用地的影响逐渐减弱,后期第二、三产业用地格局变化更多受到岛内交通网络、岸线资源、本底产业基础等因素影响. 相似文献
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文章首先介绍了珠海海岛主要旅游节庆活动,分析了珠海海岛旅游节庆的优势和劣势,提出"百岛之市"的珠海要发展海岛旅游节庆,就必须认清自身的优劣势,抓住海洋休闲运动兴起的机遇,深挖独特的历史文化,消除赋予节庆的额外责任,并采取多种渠道让海岛融入居民生活。 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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试论青岛滨海休闲体育旅游的开发 总被引：5，自引：0，他引：5
青岛发展滨海休闲体育旅游不仅具有资源、技术、人才的优势,而且面临举办奥运帆船项目等良好的发展机遇.分析了青岛发展滨海休闲体育旅游的条件与机会,在此基础上设计了以浮山湾海上综合运动中心为依托的海上体育旅游,以海水浴场为基础的海滨休闲娱乐体育旅游,以疗养院所为主的体育保健、康复旅游、以崂山风景名胜区为主的山地休闲体育旅游活动,以海岛为依托的垂钓专项旅游等多项特色体育旅游产品,并提出了相应的发展对策和应注意的问题. 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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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
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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