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东海岛屿风尘地层中火山玻璃的发现及环境意义 总被引：3，自引：0，他引：3
近年来通过对东海诸岛屿第四纪风尘沉积的研究表明 ,东海嵊泗列岛上广泛接受晚更新世以来的风尘堆积[1] 。嵊山岛是浙江沿海舟山群岛最外缘的岛屿之一 ,位于 30°4 5′N、12 2°5 0′E的东海海域 ;岛屿面积约 4 2 5km2 ,该岛屿主要由花岗岩基岩组成 ,岛屿最高点海拔达 10 0多米。岛屿大部分地区基岩直接出露地表 ,厚达数米的风尘黄土直接覆盖在基岩之上。该岛风尘堆积地层较为典型 ,保存较为完好 ,风尘地层记录诸多古气候、古环境变化的信息 ,是研究中国东部第四纪风尘沉积、第四纪环境演变和全球变化区域响应的良好载体。通过对岛屿风尘… 相似文献
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连云港市海岛潜在旅游资源评价 总被引：2，自引：0，他引：2
连云港市拥有江苏省唯一的基岩海岸和基岩岛屿群,除东西连岛外,其他海岛开发力度均较低,而这些岛屿具有丰富的潜在旅游开发价值.通过分析连云港市沿海岛屿与近海岛屿的现状,对海岛旅游资源进行了评价,提出了海岛旅游的组合与规划思路. 相似文献
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舟山群岛地处我国东南沿海的长江口南侧、杭州湾外缘的东海水面上,地理位置介于29o32'～31o04'N、121o30'～123o25'E之间。舟山是全国惟一的群岛型地级市。市域总面积为2.22万km2,其中,海域面积为2.08万km2,占96%;岛屿陆地面积为0.14万km2,占4%。舟山群岛共有大小岛屿1390个,现有常住人口岛屿103个,舟山本岛为我国第四大岛。我国沿海岛屿中以舟山群岛最为密集,是我国最大的群岛。舟山众多的岛屿拥有丰富的海洋资源,具有优越的区位和优良的开发前景。在新的发展时期,舟山面临着重大的机遇,也迫切需要解决主导产业遴选问题。赋予准确的区域定… 相似文献
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中国的海岸带调查和管理现状 总被引：1，自引：0，他引：1
姜海平 《海洋地质与第四纪地质》1990,(1)
中国大陆有18000km的海岸线,有基岩海岸、砂砾质海岸、淤泥质海岸、红树林海岸和珊瑚礁等多种类型.海岸带面积广阔,具有丰富的石油、滨海砂矿和生物资源,据初步估计,滩涂面积约2万km~2.我国沿海地区人口稠密、城市集中、经济发达、科技力量雄厚.开发利用海岸带资源是发展我国海洋事业的重要组成部分.为了全面齐发利用我国海岸带资源,早于1960年至1966年,国家即有计划地组织过全国海岸带的调查和研究.第二次开展的全国海岸带和海涂资源综合调查,始于1980年,至1986年完成.调查范围为:北起鸭绿江口,南至北仑河河口,包括辽宁、河北、天津、山东、江苏、上海、浙江、福建、广东和广西十个沿海省市的海岸带.调查区以海岸线为准,一般向内陆延伸10km,向海延伸至10—15m的等深线.调查内容为地质、地貌、底质、土壤、生物、水文、气象、化学等方面. 相似文献
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一、盐城沿海概况
盐城海域位于江苏沿海中部，东濒黄海。全市海岸线长582km，是江苏省海岸线长的60%，滩涂及其辐射沙洲面积46.8hm^2，占江苏省滩涂面积的70%，盐城市境内的海岸均为粉砂淤泥质海岸，射阳河口以北为侵蚀型海岸，潮间带海滩较窄，一般宽0.5-1km；射阳河口以南为堆积型海岸，沿岸潮间带浅滩宽10-13km，目前该岸段仍处于淤长趋势，平均速率新洋港至王港一带约50m/a左右，港附近约100m/a左右，盐城管辖的海域面积约1.7万km^2，其中内水面积约1.1万km^2。 相似文献
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崖门至漠阳江间港湾式海岸地貌 总被引：5，自引：0，他引：5
中国大陆东南沿海自杭州湾以南,大体上属于港湾式基岩海岸,濒临热带亚热带海洋,众多的河流于此人海,沿海的港湾式海岸为海岸地貌学研究的重要课题之一。吴尚时、罗开富以及曾昭璇等先后对粤中海岸进行过地貌研究。笔者等也曾对粤中海岸作过动力地貌调查。本文以崖门至漠阳江间海岸为例,探讨港湾式海岸地貌发育问题。 相似文献
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规范养殖用海管理的实践与思考 总被引：1，自引：0，他引：1
盐城市位于江苏沿海中部,海域总面积约1.7万km2,其中内水面积约1.1万km2,连陆滩涂及辐射沙洲约45.3万hm2。境内海岸线长582km,占江苏全省的60%。海岸大体分两种类型:一类是射阳河以北为侵蚀性粉砂淤泥质海岸,近几年的人工达标海堤建设,海岸侵蚀得到了遏制;一类是射阳河以南为堆积型粉砂淤泥质海岸,沿岸潮间带浅滩宽10～13km,岸外为巨大的辐射状沙脊群,本岸段是江苏海岸淤积作用最大、潮间带最宽的地带。 相似文献
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在我国沿海中部,在江苏省北部,有这样一座城市,它东临黄海,西通中原,南屏江淮,北接齐鲁,是中国沿海首批14个对外开放城市之一,是新亚欧大陆桥的东方桥头堡,也是中国三大海洋特殊开发区之一。全市拥有204.817千米海岸线,30.6千米岛屿岸线和14座基岩海岛,拥有江苏省唯一的基岩港湾海岸40千米和仅有的砂质海岸30千米,是江苏省的黄金海岸。这样一个拥有独特区位优势和丰富海洋资源的沿海城市,正是苏北的发展龙头,沟通东西、连接南北的未来区域性中心城市、现代化港口工业城市和国际性海滨旅游城市——连云港。在《中华人民共和国海域使用管理法》颁布实施之前,连云港市的海洋开发利用多局限于交通、捕捞、养殖、盐业等传统产业,由于海域权属界线不清和"祖宗海"意识根深蒂固,"无序、无度、无偿"用海的现象普遍存在。无序、无度的海洋捕捞和开发造成局部海域生态环境恶化,无偿的海域占有和使用造成国有海域资源性资产大量流失,连云港市的海洋行政管理工作面临巨大的压力和挑战。为强化海洋行政管理职能,2001年7月,经连云港市人民政府批准决定,在撤销原连云港市水产局、市海洋管理局的基础上,通过职能整合,组建成立了连云港市海洋与渔业局。面对严峻的发展形势和棘手的海洋管理难题,连云港市海洋与渔业局领导集体凭借"第一个吃螃蟹"的勇气和"咬定青山不放松"的毅力,立足实际、审时度势、积极进取、开拓创新,走出了一条具有连云港特色的海洋管理创新跨越发展之路。 相似文献
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Erik M. Horstman Kathelijne M. Wijnberg Alfons J. Smale Suzanne J.M.H. Hulscher 《Ocean & Coastal Management》2009,52(12):593-611
The potential impacts of climate change on coastal zones combined with the ever increasing number of people living in these areas, motivate a more long-term perspective in coastal management. To explore whether such a perspective raises the need for developing coastal management strategies at larger spatial scales, this paper presents a case study for the dune-protected Holland coast. Long-term (200 years) coastal management strategies are set-up at different levels of spatial aggregation, accounting for specific characteristics of the coast itself and for types of land use in the hinterland. Using a combination of multi-criteria analysis and cost-benefit analysis the new coastal management strategies are compared to the long-term continuation of present coastal management practice. It appears that the large uncertainties that inevitably accompany a long-term perspective do not preclude the comparison of long-term coastal management strategies. Additionally, it appears that a long-term perspective favors solutions for coastal defense enhancement that are more spatially extended and alongshore uniform than those emerging from continuing today's coastal management practice for two centuries. 相似文献
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目前鲨鱼养护管理问题已引起国际社会的广泛关注,《鲨鱼养护管理国际行动计划》和《濒危野生动植物种国际贸易公约》等国际文件从生态系统保护和贸易管控角度对鲨鱼问题做出规定。为了顺应国际社会加强鲨鱼养护管理的趋势,RFMOs出台了一系列决议和措施。对此,作为远洋渔业大国的我国应针对目前履行RFMOs管理规定中存在的问题,尽早做好各项准备,以彰显我国渔业大国的负责任态度,更好地维护我国远洋渔业合法权益。第一,对外加大宣传,树立我国远洋渔业的正面形象;第二,加强远洋渔业从业人员培训,强化远洋渔船监管;第三,加强国际渔业法律科学人才队伍建设,提升在国际渔业管理中的话语权和主导权;第四,转变我国渔业法规指导理念,确立以养护为主的渔业管理基本方针。 相似文献
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Tamara S. Galloway Rebecca J. Brown Mark A. Browne Awantha Dissanayake David Lowe Malcolm B. Jones Michael H. Depledge 《Marine environmental research》2004,58(2-5):233
The ECOMAN project was initiated from an awareness of the complexity of the functioning of coastal marine systems and the clear need for more pragmatic environmental assessment techniques linking environmental degradation with its causes. The aim of the project is to develop a suite of easy to use, cost effective and environmentally valid biological responses (biomarkers) to assess the general health of coastal systems, including estuaries. To achieve this aim, various sublethal endpoints are being measured and evaluated from a range of common coastal organisms showing different feeding types (filter feeding, grazing and predation) and habitat requirements (estuary and rocky shore) and at different levels of biological response (cellular, physiological and behavioural). This holistic integrated approach is essential to identify the full impact of chemical contamination on organisms, and enables the sensitivity of organisms to be ranked and key sentinel species for specific habitats to be identified. 相似文献
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Robert J. Bailey 《Ocean & Coastal Management》1997,34(3):205-224
The state of Oregon has instituted an ocean resources management program within state government. The program, enacted by the state legislature in 1987 and amended in 1991, is a component of the statewide land-use planning program and coastal management program developed in the early 1970s. Politically the ocean program has roots in strong public interest in protecting coastal resources from destruction or degradation. This paper reviews the history of the development of the program, describes key elements, highlights some distinguishing program characteristics, sketches the ocean governance relationships that now exist off Oregon and lists some practical examples of what the program has accomplished. Finally, the paper includes some observations that may provide perspective for others contemplating a state ocean management program. 相似文献
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Susan S. Hanna 《Ocean & Coastal Management》1995,28(1-3)
Fish populations have the potential to contribute to the long-term economic and social benefit of humans, but to do so they must be managed in ways which maintain ecological health. There are many ways that management performance can be assessed, but four measures are particularly pertinent to sustainability: equity, stewardship, regulatory resilience, and efficiency. A key factor in management performance is the process by which management tools are developed and implemented. One approach that has been recommended to improve performance is to structure the management process around user participation. The paper analyzes three case studies of user participation in ad hoc processes of Pacific groundfish management: the development of a license limitation program; an inter-gear sablefish allocation; and the development of a sablefish individual quota (IQ) program. The case studies illustrate the role played by participation in contributing to the equity, stewardship, resilience, and efficiency of the management process. The effect of user participation was mixed in the three cases, depending on the history of participation, the structure and process of participation, on resource conditions and on the characteristics of the program under consideration. Participation can contribute positively to fishery management performance when there is a history of collective decision-making, the time line is slow enough to allow a full consideration of the issues, educational possibilities are pursued and the condition of the resource allows equitable compromises. 相似文献