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海洋动植物资源异常丰富。现在已知海洋植物有1万多种,其中主要是低等植物——海洋藻类。已知的海洋动物有16万～20万种。其中鱼类有1万多种;甲壳动物有3万多种,如虾、蟹等;软体动物有5万余种,如扇贝、鲍、马蹄螺、鱿鱼、乌贼等;在棘皮动物中,可供食用的海参有40种。目前,人类每年从海上获得的鱼类、藻类、贝类等水产品虽然多达约6300万吨,但也仅占全球水产品总量的0.3％。头足类资源尚有90％未开发利用。南极洲海域的磷 相似文献
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在我们居住的这个地球上，有71％的面积被蔚蓝色的海水覆盖着。浩瀚的海洋是自然界最主要的地理形态，也是人类生存和可持续发展的战略性资源基地。仅以能源为例，据科学探明海洋石油可采储量约为1350亿t，约占全球石油可采储量的45％。1950年全世界海洋石油产量仅为3000万t，2000年达到约10亿t。在半个世纪里，世界海洋石油产量增加了30余倍，既为世界经济的持续稳定发展提供了能源保障，同时也有力地促进了沿海国家经济的发展和社会的进步。随着人类经济活动空间的不断拓展和科学技术的进步，对海洋石油的需求正日益呈现飞速增长的态势， 相似文献
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实施“科教兴海”战略 发展海洋经济 总被引：1，自引：0，他引：1
1 丰富的资源优势 福建省是我国的海洋大省之一,海域辽阔,海洋资源丰富。海域面积13.6万平方公里,海岸线总长3 051公里,拥有大小岛屿1 202个,大小港湾125个,有可建天然深水良港6个,滩涂面积2 068平方公里。近海分布着五大渔场,有海洋生物3000余种,已知鱼类752种,其中 相似文献
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酶解海洋生物源蛋白制备活性肽研究进展 总被引：4，自引：0，他引：4
<正>海洋是地球上最大的生物储库。辽阔的海洋生长着十几万种海洋动植物,从海洋获取的鱼、虾、贝、藻等,为人类提供了丰富的海洋蛋白资源,是人类的蛋白类食物及生物活性物质的重要来源。现在人 相似文献
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管华诗 《中国海洋大学学报(自然科学版)》2010,40(5)
现代海洋药物的研究开发始于20世纪40年代,兴起于60～70年代,并形成热潮,80年代进入高速发展期,于90年代末形成第二次高潮.新发现不断拓展着研究领域,新技术不断提升研究水平,经过半个多世纪的发展,已取得了辉煌的成就.迄今,已从各类海洋生物中分离鉴定出20000余种海洋天然产物,发现了40余种具有抗癌、抗菌、抗病毒、镇痛等作用的药物先导化合物,进入了临床或临床前研究,其中一些极有可能发展成为新药. 相似文献
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The correlation between the azooxantellate scleractinian coral distribution and the abundance of the zooplankton in the Atlantic
Ocean is discussed. The analysis is based on a dataset of 943 specimens (82 species) sampled at 87 stations that were performed
during the scientific cruises of Russian research vessels in the Atlantic. The hypothesis concerning if the coral biodiversity
and population density correlate with the zooplankton abundance was tested. The relationships between these parameters are
contradictory. High coral biodiversity and population density were registered for the areas of low and average zooplankton
abundance in the surface waters. 相似文献
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1982年第三次联合国海洋法会议产生了《联合国海洋法公约》,美国积极参与并主导了该《公约》的整个谈判过程,对《公约》大部分条款持支持态度,但最终却没有签署《公约》,其原因主要在于它反对《公约》第十一部分关于深海采矿的规定。1994年《执行(公约)第十一部分的协定》对《公约》中与深海采矿有关的部分进行了实质性修改,满足了美国的利益和要求,但美国国内对《公约》还存在其他一些反对意见。目前美国国内各界支持加入《公约》的呼声日益高涨,美国正在积极考虑加入《公约》。 相似文献
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为研究黄河入海径流变化条件下河口附近海域盐度扩散特征,以更好地保护河口海域生物资源多样性,本文以黄河下游利津水文站的长序列实测径流数据资料为基础,利用近海水动力模型FVCOM,分析径流变化对黄河口海域盐度的影响规律。结果表明：黄河口与莱州湾之间存在顺时针的环流系统,在余流作用以及涨落潮方向的影响下,黄河冲淡水长期向莱州湾扩散;丰水期黄河冲淡水几乎影响了整个莱州湾,27盐度锋可以到达莱州湾中部,27等盐线的表层包络面积为2 665.61 km2,占莱州湾的1/4左右,枯水期低盐度水只有向南扩散的趋势,27以下的低盐度水集中分布在黄河口门附近,27等盐线的表层包络面积只有199.65 km2;5月份,随着入海径流量增加,27等盐线扩散的范围、距离、方向都会发生明显变化。在对近海生物资源有迫切保护需求的情景下,适当减少其他用水户供水量以增加入海生态径流量,可以有效改善黄河口海域附近的盐度情况,为生物资源的生长繁殖创造良好条件。 相似文献
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Relationship between the path of the Kuroshio in the south of Japan and the path of the Kuroshio Extension in the east 总被引：2，自引：0，他引：2
A relationship between paths of the Kuroshio and Kuroshio Extension (KE) is investigated, using the satellite-derived altimetry
dataset of 1993–2008. When the Kuroshio takes the nearshore nonlarge meander path or typical large meander path and resultantly
goes through the deeper channel (about 2500 m) of the Izu-Ogasawara Ridge, the KE path adopts a relatively stable state with
the two quasi-stationary meanders. On the other hand, when the Kuroshio takes the offshore nonlarge meander path and then
passes over the shallower part of the Ridge (about 1000 m), the KE path tends to be convoluted, i.e., an unstable state. 相似文献
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射阳县位于江苏沿海中部，东临黄海，拥有海岸线长１０９ｋｍ，滩涂面积７万ｈａ，是江苏省渔业生产重点县之一。“九五”期间，射阳县把发展海洋渔业作为全县经济新的增长点来抓，不断加大开发力度，稳定提高捕捞业，全力突破养殖业，积极发展水产品加工业，取得显著成效，已成为海洋经济发展的先导产业和支柱产业，全县现有各类捕捞船只２０５８艘，总功率为７万多千瓦，海水养殖面积１万多公顷，育苗水体６５万ｍ３，水产品加工库容４０００余吨，年产各类海产品达５５万多吨。然而，在当前近海主要经济鱼类资源急剧衰退，伏季休渔期… 相似文献
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Analysis of the sections traversing the polar hydrological front on the shelf of the North-European basin has enabled us to reveal the areas limited by closed isotaches of the sound velocity existing in the interfrontal zone at depths of 50–150 m. These areas represent the closed waveguide which has the property of an underwater sound channel.Translated by Mikhail M. Trufanov. 相似文献
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Izvestiya, Atmospheric and Oceanic Physics - Analysis of the temporal variations of the virtual heights of the sporadic E layer (h?ES) determined from ionograms with increased accuracy (1... 相似文献
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Wei Shouqing 《海洋学报(英文版)》1991,10(3):480-480
A study was made on the polyculture of the red algae Gracilaria tenuistipitata Chang et Xia f. Liui Zhang et Xia, f. nov. , the shrimp Penaeus penicillatus Alcock and the mud crab Scylla serrata (Forskal) . The photosynthesis of the algae produces the oxygen on which the shrimp and the crab breathe. The algae are the reproductive place of the organism for the food of the shrimp and the carb, also is the shelter of the shrimp and the crab. The shrimp and the crab regard the algae as the vegetable 相似文献
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We analyze the components of the carbon system of the Sevastopol bay waters and the balance of main sediment-forming substances
using the data of field investigations in 1998–2008. The interannual variations of total inorganic carbon and the equilibrium
partial pressure of carbon dioxide in the bay water are noted. An increase in the flux of carbon dioxide into the bay and
in the content of organic carbon in bottom sediments is revealed, and an explanation of this phenomenon is given. The priority
accumulation of organic carbon in the sediments of the bay is established. We assess the interannual variation in the relative
abundances of organic and inorganic carbon as an index of the carbon cycle stability. 相似文献
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The analysis of the structure of the cryolithozone, facies, and thicknesses of the Quaternary sediments and the results of the physicochemical mathematical modeling of the modern shelf of the western part of the Laptev Sea support the influence of the Late Pleistocene glaciations on the heat conditions and the distribution of the permafrost in the area. A ～200-m thick glacier formed under aerial conditions from atmospheric precipitation represented the metamorphosed snow cover. According to the modeling, the long-living (from 60?50 to 10?4 ky) glacier reduced the thickness of the permafrost rocks in the reviewed shelf area for 280–360 m. The Holocene marine transgression additionally decreased the thickness from 50–140 m on the inner shelf to 220–350 m on the outer shelf. The modern submarine cryolithozone 450-0 m thick is wide-spread in the studied region from the coast to the shelf boundary (isobaths of 130–140 m), where it pinches out at a distance of ～380 km from the coast at a depth of ～250 m above the sea level. 相似文献