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ZHAIXuemei HawkinsS.J 《青岛海洋大学学报(英文版)》2002,1(1):8-12
Throughout the world, the coastal zones of many countries are used increasingly for aquaculture in addition to other activities such as waste disposal. These activities can cause environmental problems and health problems where they overlap. The interaction between aquaculture and waste disposal, and their relationship with eutrophication are the subjects of this paper. Sewage discharge without adequate dispersion can lead to nutrient elevation and hence eutrophication which has clearly negative effects on aquaculture with the potential for toxic blooms. Blooms may be either toxic or anoxia-causing through the decay process or simply clog the gills of filter-feeding animals in some cases. With the development of aquaculture, especially intensive aquaculture, many environmental problems appeared, and have resulted in eutrophication in some areas. Eutrophication may destroy the health of whole ecosystem which is important for sustainable aquaculture. Sewage discharge may also cause serious public health problems. Filter-feeding shellfish growing in sewage-polluted waters accumulate micro-organisms, including human pathogenic bacteria and viruses, and heavy metal ion, presenting a signiticant health risk. Some farmed animals may also accumulate heavy metals from sewage. Bivalves growing in areas affected by toxic algae blooms may accumulate toxins (such as PSP, DSP) which can be harmful to human beings. 相似文献
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福建是海洋大省,海岸线长３３２４千米,居全国第二位;海域面积达１３．６万平方千米,超过陆域面积;海洋生物、矿产、能源、旅游等资源丰富,发展海洋与渔业经济条件得天独厚。充分利用海的优势力,加快发展海洋与渔业经济,对于缓解福建人多地少矛盾,拓展新的生存与发展空间;对于加快本省沿海地区发展,促进内地山区迅速崛起,建设海峡西岸繁荣带;对于加强闽台交流与合作,促进两岸“三通”和祖国和平统一,都具有十分重要的意义。 现状与实绩 改革开放以来,福建省委、省政府高度重视发展海洋与渔业经济,先后作出“大念山海经”、… 相似文献
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近日,记者从内蒙古自治区国土资源厅获悉,全区有151处天然矿泉水水源地获得了技术专家评审组的评审。评审专家指出,内蒙古矿泉水资源丰富,特别是地热资源储藏量大,开发价值高,这对发展矿泉水产业,推动全区经济发展都具有重要意义。 相似文献
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“没有强大的海洋科学事业，没有强大的海洋经济，中国就永远不可能成为真正的强国。”朱基总理２００１年‘十五’规划报告中提出了关于实施海洋战略的内容。目前，我国海洋产业年收入５０００亿元，约占整个GDP的２．４％，远远低于发达国家１０％～２０％的水平，我国海洋经济的内部结构也不合理，其中海洋渔业占５４．７％，海洋石油占６％，海滨旅游占１４％，海洋盐业占２％，海洋运输占２０％。从中可以看出，第一产业比重过大，二产、三产比重偏小，发达国家海洋经济的第一、第二、第三产业之间比已达２∶３∶５。研究海洋经济与… 相似文献
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1999年11月,中国与美国达成了入世双边协议,为中国加人WTO铺平了道路。拥有世界1／5人口的中国加入WTO,将使该组织真正成为全球性的贸易组织,将使经济全球化进程更加有效、有序,世界的经济格局将会因此而发生深刻的变化,我国的经济发展和对外开放也会因此而受到巨大的影响。面对WTO,青岛的海洋与水产业该做怎样的理性思考？这是摆在我们面前的一个非常重要的问题。一、青岛市海洋与水产业的现状分析青岛海岸线长730．64千米,有49处海湾,69个岛屿,管辖的近岸海域约130多万公顷,海洋资源十分丰富。近年来,青岛市大力实施依法… 相似文献
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Distribution of injected Vibrio anguillarum in body of P,,naeus monodon was studied with immunohistochemical method. Bacteria could be detected throughout the experiment in some individuals; however in lymphoid tissue, gill, heart and haemolymph of all vibrio injected shrimp, the bacteria could be observed only 5 min after injection. The bacteria density in haemolymph, haemolymph of the hepatopancreas and gills decreased with time. In the lymphoid organ and heart, the bacteria density was the highest 48 h after injection, then decreased. Nodules could be formed in the heart, lymphoid organ and injection site. 相似文献