渤海海洋线虫与底栖桡足类数量之比的应用研究   总被引：9，自引：0，他引：9  

郭玉清  张志南  慕芳红 《海洋科学》2002,26(12):27-31

在渤海的22个站位，分3个航次采集未受扰动的沉积物样品，进行了小型底栖动物中两个主要类群自由生活海洋线虫和底栖桡足类数量变动和两者数量之比评价沉积物有机污染环境的研究。结果表明：对于同一航次的不同重复，数量变动差异显著或极显著；在同一个站位24h，6次重复取样，两者数量的变异系数较大；在应用该比值进行沉积物有机污染评价时，在同一站位该比值波动较大。  相似文献   

SOLID-LIQUID INTERFACE PROCESS OF HEAVY METALS IN THE CHANGJIANG ESTUARYKINETICS OF ADSORPTION OF Pb, Cu AND Cd ON HFO     

庄国顺  陈松  艾宏韬  廖文卓  潘皆再  许爱玉 《海洋学报(英文版)》1984,3(4):508-516

The adsorption kinetics of Pb, Cu and Cd on hydrous ferrk oxide (HFO) has been approached in tthe simulated environmental conditions of the Changjiang Estuary. The forward adsorption rate constants of different systems under different temperatures have been determined, and the activation energies of the adsorption for Pb and Cu evaluated (Pb=7 kcal/mol, Cu= 11 kcal/mol). The results show that Pb and Cu are strongly adsorbed by HFO; the order of their adsorption rate is found to be Pb≥Cu≥Cd, which follows thte order of their theonody-namic equilibrium constants. It has been demonstrated that the surface exchange-adsorption is the determining step of the solid-liquid interface process. The field investigation results are theoretically explained by the kinetic mechanism.  相似文献   

渤海底栖桡足类群落结构的研究   总被引：7，自引：0，他引：7  

慕芳红  张志南  郭玉清 《海洋学报》2001,23(6):120-127

渤海1998年9月航次的调查结果.小型底栖生物总平均丰度为(8688±5097)个/m2,底栖桡足类居第2位,平均丰度为(663±569)个/m2,占总数量的76%.根据77种底栖桡足类丰度所做的聚类和标序分析将渤海20个站位划分为4个组合.根据11种环境因子数据所做的聚类和主成分分析将研究海域划分为两个生境、4个亚区.对研究海域进行的分区与自然分区是基本一致的.支配研究海域底栖桡足类群落结构的主要环境因子是水深和沉积物粒度.  相似文献   

高分辨率遥感技术在厦门海湾生态环境调查中的应用   总被引：5，自引：0，他引：5  

林桂兰  孙飒梅  曾良杰  庄世坚 《台湾海峡》2003,22(2):242-247,T003

对于局部区域研究，高分辨率卫星遥感及其影像的智能化处理技术是获取信息的新手段．本文以IKONOS遥感影像在厦门海湾的应用为例，探讨高分辨率遥感卫星影像应用于海湾生态环境调查与分析的应用技术．通过分析高分辨率影像地物特征，提出高分辨率遥感影像的重要处理技术：采用不同缩放尺度进行分类和利用空间特征及纹理结构进行专题信息提取。  相似文献   

A STUDY OF MICROTEKTITES IN THE PACIFIC OCEAN     

彭汉昌  于众  缪昕  庄世杰 《海洋学报(英文版)》1984,3(1):106-113

In 1979, we found many small colorless transparent and light yellow-green glassy spherules in the surface layer and core sediment samples taken from the west of the Central Pacific Occan, which are considered to be microtektites. This finding is worthy of further determination of the range of strewn field and origin of tektites.  相似文献   

AHP RESIN AND ITS URANIUM ADSORPTION MECHANISM     

蔡水源  庄明江  郑文庆 《海洋学报(英文版)》1982,1(2):225-233

I. INTRODUCTION AHP resin is a new type of adsorbent and has been studied by the units concernedfor several years. There is little report about this work so far. AHP resin was synthesizedin aqueous phase with tetra-ethylene pentamine (TEPA), epichlorohydrin (ECH) andC-reagent as raw materials, and basic zinc carbonate (P_Z_n) and rubber solvent oil (120Gasoline) as pore-forming material. Compared with the technique of the amorphous lumpresin and that of the resin synthesized in oil phase, the new technique of resin synthesizedin aqueous phase manifests many advantages, such as raising the capacity of uranium-adsorption of the resin, simplifying the after-treatment process, reducing the cost, etc. Sea water, in which all kinds of cation and anion exist, is a system of electrolytes,and the concentrations of many ions are higher than the concentration of uranium for  相似文献   

秦皇岛昌黎黄金海岸的沙丘沉积和发育机理   总被引：7，自引：0，他引：7  

曾照爽  庄振业  祁兴芬  刘志杰 《海洋地质前沿》2003,19(7):23-27

昌黎黄金海岸长40km，分布1～1．5km宽的风成沙丘。主沙丘链高30～40m，顺岸线分布，与其斜交数列新月形横向沙丘链。沙丘以中细砂组成，分选极好，层理构造十分丰富。距今3～4ka以前，沙坝形成时就开始形成沙丘；1915年滦河新三角洲发育以来增加了风沙的输沙量，增高沙丘和扩宽了沙丘带。  相似文献   

MECHANISM OF URANIUM ADSORPTION ON AMIDOXIME RESIN   总被引：1，自引：0，他引：1  

郑邦锭  蔡水源  庄明江  蒋龙生 《海洋学报(英文版)》1985,4(3):417-422

The mechanism of uranium adsorption from seawater by polyacrylamidoxime resin is investigated by means of the experiments of adsorption isotherm and adsorption rate. The uranium uptake increases with the adsorption temperature and varies with the pH of seawater. Thermochemical and kinetic calculation show that the enthalpy change (△H) and the activation energy (E) of the uranium adsorption are 42.4 42.4 kJ mol-1 and 41.2 kJ mol-1 respectively, indicating that the uranium adsorption on the resin proceeds via a certain complex chemical reaction in which the amidoxime group in the resin chelates uranyl ions.  相似文献   

山东莱州仓上泻湖Y86孔微量元素地球化学特征及沉积相判别     

韩宗珠  袁红明  庄振业  吕海燕 《海洋湖沼通报》2005,(2):13-21

本文通过对山东莱州仓上泻湖Y86孔柱状样的系统取样，利用X荧光光谱分析了沉积柱状样品中的主要微量元素含量，结合已有的粒度分析、微体古生物及孢粉结果相分析对比，对泻湖沉积相进行地球化学判别，结果表明，Rb，Cr，Nb，Ni，Rb，Sr，Th，V，Zn，Zr等元素含量及Sr／Ba，Sr／Ca、Mn／Fe比值在不同的沉积相中均有明显的变异特征。因此可根据泻湖沉积物中的微量元素含量及Sr／Ba，Sr／Ca，Mn／Fe比值判别泻湖沉积环境及沉积相。  相似文献   

乐清湾港池开挖后骤淤可能性分析   总被引：4，自引：0，他引：4  

叶建国  庄晓荣 《海洋工程》2007,25(1):114-119

乐清湾避风条件好,潮流动力强,含沙量小,具有较好的建港条件。通过对骤淤机理的分析和试挖槽在台风期间的监测以及大风浪下的悬沙淤积的估算等多种研究后,认为乐清湾港池开挖后不会发生骤淤,实行浅水深用的开发方案是可行的。  相似文献