23 research outputs found

    Physiognomy Environment of the Ancient Routeway from Minzhong to Taizhong ——Concurrently Discussing the Existence of"Dongshan Overbridge"

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    晚更新世的最后一次冰期,当全球海平面下降到现海平面-50m左右,台湾海峡即消失。除了澎湖岛群东南部一片深海域仍为南海东北边一角外,闽-台之间成为一片洼地。这时,闽-台两地的居民互相来往已无天堑之隔,只有一条宽度不大的中心河道,渡过此河便可通达彼岸。本文全面分析了本区的自然条件、全球海平面变化和地貌冲淤环境之后认为:从福建的晋江向东,早期以航行,后来只过渡口,取道长元高地上岸可直通台中各地。这是一条便捷和安全兼备的古通道,是古人经过上万年的实践走出的一条传统的故道。此线对下一步海峡两岸进行现代化的跨海通道选线勘研有良好的导向和启迪作用。During the last ice age of the late Pleistocene,with the falling of sea level down to-50 m with respect to the present sea level,Taiwan Strait disappeared.Besides of a narrow deep sea area to the south of the Penghu Islands,the area between Fujian and Taiwan became a lowland,and except a river passing through it from north to south,the communications of people between Fujian and Taiwan became very easy.Based on a detailed analyses of the main factors,including natural conditions,sea level changes, physiognomies and sedimentation environments,it is concluded in this paper that there was an ancient routeway from Jinjiang to Changyuan High-land,and to the middle part of Taiwan.The routeway was a shortcut formed by ancient people for over 10 thousands years.The discovery will be significant to the study of a modern routeway such as a tunnel across Taiwan Strait in the future

    环境因素影响下的闽江下游传统聚落布局特征分析

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    基于闽江下游传统聚落的环境适应性,分析了影响传统聚落布局的地形、水系、气流、交通、防卫等环境因素,并据此将该地区聚落布局分为盆地型、丘陵型、平原型、河谷型和海防型,并对各类型聚落的分布区域和布局特征进行了归纳分析,最后例举各类型聚落中具有代表性的聚落加以诠释。国家自然科学基金项目(51778549);福建省自然科学基金项目(2013J05082,2017J01102

    Statistical study of trace elemental concentrations in major types oforganisms from typical Chinese coastal waters

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    研究了微量元素Fe、Mn、Zn、Cu、Sr、Ba在我国典型海域主要生物类别中的概率分布特征,并与常量元素Ca、Mg进行了比较。结果表明,微量元素的概率分布曲线具正偏态性质,概率分布类型大多为对数正态分布或近似对数正态分布,表明对某一特定微量元素,大多数生物体中的含量都比较低,只有个别生物有不成比例的高含量。常量元素Ca与微量元素相似,表现为对数正态分布,而Mg却具正态分布特征。本文给出了我国典型海域生物体中元素含量的总体分布特征。The probability distribution of the trace elements Fe, Mn, Zn, Cu, Sr and Ba in the marine organisms collected from the typical Chinese coastal water swere studied and compared with those of major elements Ca and Mg. All the distributions for the trace elements in macrophytes, benthic molluscs, crustaceans, cephalopods and different tissues in the fish (muscle, liver and bone) were nearly found to show the positive skewness, and a relatively large number of the marine organisms with low concentrations for the element and only a few organisms with disproportionately high concentrations. Their distribution types were generally logarithmic normal distribution or nearly logarithmic normal distribution. Distribution of Ca was similar to the trace elements, while Mg the normal distribution. Average concentrations of the major elements in the organisms were calculated based on their probability distributions.教育部博士学科重点项目(96038412

    闽江口南支河道的演变与沉积环境

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    本文是在大面积调查闽江口梅花港海区并采取大量沉积物样品 的基础上,通过室内粒度分析、重矿物鉴定分析、石英颗粒表面结 构分析、微体生物分析、卫星照片分析及新旧海图对比分析、浅层 剖面仪探测等手段,探讨了梅花港现代河口湾的发展和沉积环境、 入海泥沙扩散规律及梅花港的衰退原因。 研究结果表明:闽江现代河口湾是冰后期海水侵入闽江河谷而 形成的。河流来沙是河口分流河道,河口沙坝、浅滩、潮流通道, 潮坪潮脊等沉积环境的主要物源,在海洋动力的作用下,E119°43′ 以西的河口海区,大于0.063mm的底沙重新起动,向南搬运 并在长乐东北岸登陆成为风沙,在E119°43′以东海区,沉积...The evolution and sedimentary environment of south branch of Min Jiang River Estuary Based on the wide-ranging investigation in Min Jiang River Estuary and a large number of sedimen samples getted in Mei-hua Gang Sea area, and with the means of grain size, mineral, microbiology, satellite photes analyses, comparison of the sea charts and observation by Kelin Sonar Profiler, the paper discusses th...学位:理学硕士院系专业:海洋与环境学院海洋学系_海洋化学学号:xy00017

    Erosion factors and prevention engineering on Huangcuo beach of Xiamen Island

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    黄厝沙滩位于厦门岛的东南岸,长4.2km,走向为NE—SW.东距小金门岛4.6km.南距大担、二担等小岛4km.1956年至2001年的45a间,在优势的NE向风和浪的作用下,沙滩平均每年以约2m的速度后退.近20a来,由于人工挖砂和海岸工程不当等原因,黄厝沙滩受到更严重的破坏.在近年沿岸道路和绿化带的施工中,人为地把原来大于30°坡度的天然侵蚀陡坎削成小于10°并与沙滩连接成一个坡面的缓坡.强台风袭来时,出现了多处沙滩砂不受阻挡地冲越上马路,冲越高程超过黄零8.5~9.0m.在宽40多米的环岛路上积砂厚达8~10cm!为了有效地保护黄厝沙滩,防止海岸线继续后退,应当采取挡沙坝或"离岸坝"工程以阻止纵向泥沙搬运,同时在可能出现横向砂冲越上岸的岸段和侵蚀后退严重的岸段修建护岸和挡浪墙工程以阻挡台风时大量海滩砂向陆地冲越.Huangcuo beach is 4.2km long in the direction of NE-SW,along the southeast coast of Xiamen Island.It is 4.6km to Xiao Jinmen Islet in the east and 4km to Dadan Islet in the south.The beach has been eroded and the coast-line retreated in about 2m/a from 1956 to 2001 due to the predominant wind and wave in direction of NE.The beach erosion became acute in last 20 years due to sand explorations and unsuitable coastal engineering.The road construction along the coast had caused the slope of the bank change from >30°down to <10°.It is the same for the beach.So the bank is jointed with the beach on a same and gentle slope.As a result,a great amount of sands were transported up to 8.5~9.0m height over the sea level,and passed through the gentle slope bank and deposited in 8.0~10.0cm thickness on the road when 9914# typhoon passed.In order to protect effectively the beach and control the coast line from retreated,it is necessary to build dams,walls and other engineering to prevent or control the sand from moving

    Aeolian landforms and coast evolution on Pingtan Island,Fujian Province

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    在台湾海峡众多的海岛中,平潭岛以风大、沙多著称.风沙作用发生在2400A b.P.左右至今,风沙作用使该岛增加了90kM2的土地.本文论述的海岛东部风沙地貌系列受nnE优势风控制,是泥砂在风和水动力作用下复合搬运与沉积的产物,以堆积型为主,伴生侵蚀-刻蚀型.风沙在七里埔、苍海造就了约14kM2的土地,在岛的中部建造了淡水湖泊“岚湖“,在田美沃留下了风蚀刻痕微地貌.此外,风沙活动还影响了海岛东部地区海岸沙滩的冲淤变化.平潭岛风沙地貌系列是台湾海峡一个独特的地质景观,其对海岸带环境变化的影响在中国东部极具代表性,在我国沿海风沙地层学和地貌学上均有较高的科研价值.Pingtan Island is famous in its strong winds and a huge amount of sands in many islands in the Taiwan Strait.The recent coastal aeolian activity on this island began 2 400 years ago.The aeolian sediments have formed about 90km2 lands on the island.This paper summarizes the aeolian geomorphic features,aeolian sedimentations and aeolian sands transportation in the east of island.Under prevailing winds,waves and currents,the aeolian accumulation formed about 14 km2 lands in Qilipu and Canhai areas,and built a freshwater lake(Lanhu) in the center of the island.The aeolian erosion produced a series of notches on the rock surface in Tianmeiwo Cape and played an important role on the beach accumulation and erosion.Pingtan Island aeolian landform series are especial geologic landscape in Taiwan Strait.The aeolian infection is typical on the changes of coastal zone environment in eastern China.They are of high scientific value in the study of stratigraphy and geomorphology

    厦-金大桥两岸共同繁荣的纽带

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    一、引言 厦门岛与小金门之间仅隔一条宽4.5km的水 道,中间纵列一条梭形浅滩和众多的小岩岛(礁), 水深不超过20m。大小金门岛与闽南三角地区,尤 其与厦门岛的关系源远流长,亲缘关系十分密切。 历史上金门诸岛与晋江、厦门、同安的民间往来

    Taiwan Shoal,a Magnitude Storage of Sand Resources

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    台湾浅滩的沉积物由分选优、磨圆度很好的中细砂组成,其中含有数量较丰的贝壳碎片、海滩岩和玄武岩砾等。以水深30 M计算,浅滩的总面积为1.5x104kM2。浅滩砂一直在巨大暴风浪和合成海流的作用下处于改造和运动状态,浅滩上几乎没有或极少底栖生物,可称为海底“沙漠“。由于浅滩砂数量巨大而浅滩区水浅,它将是一项潜力很大的建材砂矿资源,也是海峡两岸共同的天然财富。下一步的勘研工作必须两岸海洋科技界和产业界联合进行,这片浅滩砂必将造福于两岸人民。Taiwan Shoal is made of a huge amount of sands.Its area is about 1.5×104 km2 at a depth of 30 m.The shoal sands are composed of medium-coarse sands with good degree of sorting and psephicity,mixed up with a lot of shell fragments and gravels of beach rock and basalt.Under the action of storm waves and strong currents,the sands are always in moving.As a result,the shoal,or the so-called sea bottom dessert,is hardly for benthos living.However,it will become building material resources with great potential and benefit to Taiwan and mainland of China in future.So the scientists from two banks of Taiwan Strait should further work together to protect the resources

    Coordination mechanism for science research serving integrated coastal management in Xiamen

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    科学技术支持是海岸带综合管理取得成效的基础 ,引导科学研究为海岸带管理服务应注重协调好管理部门与科研单位、科研单位之间、学科之间、理论成果与应用等诸多关系 .厦门通过建立科研界与行政管理界的联系渠道、联合开展海岸带综合管理的科学研究、建立海岸带专家组等途径 ,形成了科研为海岸带综合管理服务的协调机制 ,促进了科研与管理的合作 ,为海岸带综合管理决策与行动提供科学依据 ,有效地促进了海岸带综合管理进程 .Science and technology play important roles in successful integrated coastal management (ICM). It is a key for science research to provide service for administrations. Coordination is a useful method for cooperation or connection of a series of relations including science research units and administration agencies, different science research units, different subjects, and research output and implementation. Xiamen has established a coordinating mechanism through approaches such as strengthening the connection between sciences and administrations, implementing ICM research projects and establishing an ICM expert group. As a result, the science research has been providing the essential information for ICM polices and action plans, which has effectively promoted the progresses of ICM in Xiamen

    Discussion on the Assessment Method of Sunlight Impact Caused by Higher Buildings

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    旧城改造工作中的光遮挡环境问题凸现,由此引发的日照问题逐渐受到广泛关注.已往的日照环境影响评价大多针对拟建项目对周围原有项目的影响,而忽略了新建项目可能受到潜在的光遮挡.本文从连续日照时间的角度,重点对新建高层建筑可能会受到的日照环境影响进行分析,尝试提出一种日照问题的方法"零项目"日照环境影响评价法.In the reconstruction of old cities,the problem of sunlight blocking out by higher buildings has caused more and more attentions,and it becomes a new concern of real estate′s environment impact assessment.However,the existing sunlight environment assessment methods used to be focused more on the sunlight shielding by new buildings to the existent ones while it ignores the potential sunlight shielding the new building may have.Based on the sunlight duration,this paper focuses on the analysis of potential sunlight shielding that a new programme may have and attempts to find an effective method for the sunlight environment assessment
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