大连市临港工业区的布局现状及趋势研究

长期以来,临港工业区成为拉动世界以及我国沿海发达地区经济发展的关键因素。文章在分析临港工业区布局基本条件与一般特点的基础上,针对大连市的实际情况,对大连临港工业区的布局现状及其存在的问题进行了剖析,并进一步在全球重化工业转移、东北老工业基地振兴的背景下,对全市临港工业区建设格局进行了综合论证,并提出大连市临港工业区布局设想。     

临港产业的地域组织研究——以大连市为例

长期以来,临港产业已经成为拉动世界及我国沿海地区经济发展的一个重要因素。文章在分析大连市临港产业现状、存在问题以及对大连市、辽宁省,甚至整个东北老工业基地重要战略意义的基础之上,提出了临港产业发展由"点"到"带"的地域组织思路。     

江苏射阳临港工业发展路径研究

2008年,江苏沿海开发上升至国家战略层面.作为江苏沿海中部的土地、资源大县射阳县,如何抢抓发展机遇,加快临港工业发展,引领县域经济科学发展,是摆在该县面前的一个迫切需要研究的课题.试从射阳临港工业发展的现状和面临的瓶颈制约入手,提出准确把握临港工业拐点机遇和加快射阳沿海经济发展的几点建议.     

大连临港产业集群发展研究

产业集群的优势对区域经济发展和区域竞争力的提升发挥着越来越重要的作用。辽宁沿海经济带上升为国家战略，归根到底要落实到临港产业集群化。就大连而言，应重点围绕船舶修造产业群、先进装备制造产业群、港行物流中心产业群、高新技术产业群和滨海旅游产业群做强海洋经济，并提出临港产业集群发展的对策建议。     

现代物流业对大连建设东北亚航运中心的拉动效应分析

在振兴东北老工业基地的背景下，党中央明确提出把大连建成东北亚航运中心。国际航运中心形成的基础是经济中心．贸易中心、金融中心、信息中心。而这些条件的形成都离不开临港产业的发展。现代物流业作为大连临港产业的一种，符合科学发展观的要求，以其高效的资源配送方式在经济发展中发挥着重要的作用，是实现新型工业化的必由之路，大力发展现代物流业是经济发展的必然趋势。本文以大连市为例，从大连市现代物流业和港口发展的现状出发，论述现代物流业对大连建设东北亚航运中心的拉动效应。并针对存在问题提出相一应的对策和建议。     

浙江省海岛现状和管理对策研究

浙江省海岛众多,近年来,海洋经济是一股新的推动经济发展的有效力量,如临港产业、船舶制造业、航运业、围海造地等。而海岛作为海洋中宝贵的资源,是海洋经济发展的重要依托,有效地保护好海岛资源,才能更好地利用好海岛价值。各地为推动海洋经济发展,出台了不少有关海岛的政策措施。文章根据浙江省海岛开发利用现状及面临的一系列问题,提出了一些想法和建议。     

江苏射阳港海经济发展路径探析

射阳县是江苏省沿海资源大县,近几年港海经济发展迅速。文章首先从宏观层面分析了海洋经济发展趋势和港口发展的重要意义;其次分析了射阳县港海经济面临的国内外产业转移、国家战略实施和基础条件改善等发展机遇;最后从港口建设、临港工业、港城发展、现代农业及生态旅游等方面提出了建设性建议。     

上海临港产业集群的产业指标分析——基于双对数模型的实证研究

临港产业集群的形成和发展有利于提升临港地区的经济实力和竞争力,发挥其增长极的作用,促进区域经济的全面发展。作为中国的第一大港口城市,上海临港产业集群的发展情况一直备受各界关注。采用2001年-2009年的相关数据,通过建立双对数模型,对上海市临港产业集群各产业指标进行实证分析并得到相应的弹性系数,为探讨上海港口产业培育及今后的发展方向提供参考。     

实施“黄蓝”战略谱 写海洋经济发展新篇章——山东省东营市海洋工作纪实

十一五期间海洋经济发展成就十一五期间,东营市大力发展海洋经济、强化海洋综合管理、加大海洋环境保护力度,全市海洋经济保持健康持续发展。2010年全市海洋主要产业生产增加值达到205亿元,占全市GDP的比重达到8.7%,已形成海洋渔业、海洋油气开采、临港石化、盐及盐化工四大支柱产业。     

浅论大榭岛港口资源及其开发

大榭岛地处长江经济带与东部沿海经济带的"T"型交汇的长江三角洲地区,是我国经济发展水平最高、最具活力和发展潜力的地区之一.海洋经济发达,临港工业发展迅猛,对岸线需求日趋旺盛.大榭岛具有得天独厚的深水岸线资源,港口开发潜力巨大,具有建设现代化国际港口的优良条件.文章阐述了大榭岛港口资源开发现状及港口产业布局规划,大榭岛的港口产业对海洋经济发展的促进作用,并提出了港口发展的建议.     

Size-fractionated uranium isotopes in surface waters in the Jiulong Estuary in China

Surface water was collected from the Jiulong Estuary for determination of activity concentrations of uranium isotopes in different size fractions, namely, greater than 53, 10 -53, 2 - 10, 0.4 -2 μm, 10 000 u -0.4 μm and less than 10 000 u fractions by microfihration and cross-flow uhrafiltration technologies. Results indicated that most of the dissolved uranium （ 〈 0.4 μm） exis- ted in the low molecular mass fraction （ 〈 10 000 u）, and the colloidal uranium-238 （10 000 u -0.4 μm） only contributed less than 1% of the dissolved uranium-238. The fractions of colloidal uranium in the dissolved phases decreased with the increasing sa- linity. A positive linear relationship between uranium-238 activities and salinities was observed for the dissolved, colloidal and low molecular mass fractions, indicating a conservative behavior of uranium in the Jiulong Estuary. In the particulate phases （ 〉 0.4 μm）, the partitioning of uranium isotopes among different size fractions was controlled by the partitioning of particle concentrations. In the regions with salinities below 20, the partitioning of uranium-238 among different size fractions was as follows： 10 - 53 μm 〉 2 - 10 μm 〉 0.4 - 2 μm greater than above 53 μm. However, the order at the offshore station with salinities above 30 changed as follows ： 0.4 - 2 μm 〉 10 - 53 μm 〉 2 - 10 μm greater than above 53 μm. The fraction of the 0.4 - 2 μm particles increased at the offshore station, suggesting the increased contribution of the authigenic uranium. The activity ratio of uranium-234 to uranium-238 in the dissolved phases, including the low molecular mass fraction and the colloidal fraction, was larger than unity, showing the occurrence of excess uranium-234. In contrast, the activity ratio of uranium-234 to uranium-238 in all size fractions of the particulate phase was close to the equilibrium value （1.0）. The observed different values of the activity ratio of uranium-234 to uranium-238 in the dissolved phase and the partic     

夏季珠江口沉积物中营养盐剖面分布和界面交换通量

通过对夏季珠江口区域沉积物间隙水营养盐剖面分析,调查了营养盐含量分布和特征,探讨了有机物的降解特性、营养盐的底部通量估算和作用.结果表明,珠江口沉积物间隙水中营养盐以高含量铵盐为主要的存在形式,沉积物中有机物的降解反应主要在厌氧状态下进行,底部水体铵盐的增加来源于底部沉积物有机质的降解释放,而且对水体的营养盐循环有较大的贡献.     

Recent progress in submarine geosciences in China

In China submarine geosciences represents a newly established discipline of oceanography, focusing on the oceanic lithosphere, and its interface with the hydrosphere and biosphere. Recently, supported by the National High Technology Research and Development Program and other high-tech development projects, significant progress has been made in the development of advanced technologies and equipment. This en- ables the scientists in China to carry out explorations of the international seabed area in the Pacific Ocean and on the Southwest Indian Ridge. In addition, they have been active in the research activities associated the mid-ocean ridges and western Pacific marginal seas. It is anticipated that this research field will continue to be highly fruitful in the near future.     

湄洲湾夏季的初级生产力

湄洲湾１９９２年夏季的叶绿素ａ，三磷酸腺苷，碳比积累速率，初级生产力的变化范围和均值分别为０．４５－４．７２，１．４９ｍｇ／ｍ＾３；０．１２－１．０７，０．３１μｇ／ｄｍ＾３；０．０６－０．５８，０．３４ｄ＾－１；０．０７－０．３４，０．２１ｍ／（ｍ＾２．ｄ）。叶绿素ａ与三磷酸腺苷之间。初级生产力与碳比积累速率之间均呈正相关关系。叶绿素ａ三磷本能腺苷的比值为４．８，湄洲湾夏季浮游植物的生长受氮不足     

Seasonality in nutrient concentrations in Galveston Bay

In order to investigate factors controlling nutrient cycling in the shallow and turbid coastal ecosystem of Galveston Bay, data from: (1) the Texas Water Commission (TWC) database 1980–1989, and (2) salinity transects in 1989 and 1993 are presented and analyzed. Statistical regression and time-series analysis were carried out on data acquired by TWC between 1980 and 1989, in an attempt to establish seasonally of nutrient and chlorophyll-a (chl.-a.) concentrations in the bay and to determine factors which regulate these concentrations.A strong seasonality was found for phosphorus and chl.-a. in the upper and mid-bay stations. A recurring maximum for phosphate occurred in September and a chl.-a. maximum occurred regularly in March–April. It is hypothesized that benthic regeneration of phosphorus at the end of summer is responsible for the phosphate maximum. The inverse correlation of the partition coefficient (K_d) for phosphate with the concentration of suspended particulate matter (SPM), coupled to a strong enrichment of phosphate in suspended particles at low SPM concentrations, indicates additional control by geochemical and physical processes such as particle sorting and/or particle-colloid interactions. Nitrate is inversely correlated with salinity at the upper and mid-bay stations, indicating the Trinity River is a major source.Nutrient concentrations in the lower bay (East and West Bay stations) are considerably lower and less predictable, as they are not correlated with salinity or temperature. Data from the 1989 and 1993 transects confirm the yearly maximum in phosphate concentration in late summer months, with peak concentrations in the upper Trinity Bay. It is concluded that despite possible phosphate buffering by physical and geochemical mechanisms, relatively large concentration maxima recur regularly every year during the summer, possibly caused by a benthic source of phosphate.     

中国海洋腹足类分类学研究进展——纪念中国科学院海洋研究所建所70周年

中国科学院海洋研究所建所70年来，在海洋贝类分类学研究领域取得了长足发展与进步，做出一系列开创性研究成果。本文综述了建所以来我所海洋腹足类分类学研究方面的主要进展，概述了取得的主要科研成果，分析了现代腹足类分类学研究的发展趋势以及面临的挑战，并对今后的发展提出了相应对策和建议。     

Mesozooplankton in the Arctic Ocean in summer

The biomass, species and chemical composition of the mesozooplankton and their impact on lower food levels were estimated along a transect across the Arctic Ocean. Mesozooplankton biomass in the upper 200 m of the water column was significantly higher (19–42 mg DW m^-3) than has previously been reported for the Arctic Ocean, and it reached a maximum at ca. 87°N in the Amundsen Basin. The lowest values were recorded in the Chukchi Sea and Nansen Basin, where ice cover was lower (50–80%) than in the central Arctic Ocean. In the deeper strata (200–500 m) of the Canadian and Eurasian Basins, the biomass was always much lower (4.35–16.44 mg DW m^-3). The C/N (g/g) ratio for the mesozooplankton population was high (6.5–8.5) but within the documented range. These high values (when compared to 4.5 at lower latitudes) may be explained by the high lipid content. Mesozooplankton accounted for approximately 40% of the total particulate organic carbon in the upper 100 m of the water column. Mesozooplankton species composition was homogeneous along the transect, consisting mainly of copepods (70–90% of the total number). It was dominated by four large copepod species (Calanus hyperboreus, C. glacialis, C. finmarchicus and Metridia longa), which together accounted for more than 80% of the total biomass. According to measurements of gut pigment and gut turnover rates, the mesozooplankton on average ingested between 6 and 30% of their body carbon per day as phytoplankton. Microzooplankton may have provided an additional source of energy for the mesozooplankton community. These data emphasize the importance of mesozooplankton in the arctic food web and reinforce the idea that the Arctic Ocean should no longer be considered to be a “biological desert”.     

微生物对土壤中镉的固定作用

镉是一种重要的环境污染物,它通过沉淀作用、磷酸肥料的使用等排放到农田中。由于镉具有较高的蒸气压,因此,人为排放的镉大部分来自工业的挥发。排放到大气中的镉通过沉积作用转移到植物、土壤及水体中。在污染的土壤中镉被植物吸收并且在植物体内富集,通过这种机制镉进入了食物链。镉是一种诱导有机体突变的物质,能对动物和人类产生有害影响,并能够抑制植物的光合作用,因此,环境中镉的存在一直被人们所关注。     

海水双壳类受精生物学研究进展

1 研究概况,在海水双壳类中开展的大量受精生物学研究表明,绝大部分的海水双壳类为卵生型,雌雄配子被排放到海水中完成受精。排放的卵子处于第一次减数分裂前期(生发泡期)或中期。精子入卵后,受精卵恢复减数分裂,先后排放出两个极体,形成雌雄原核并最终启动卵裂。