Comparison of summer thermohaline field and circulation structure of the Bohai Sea between 1958 and 2000

TheBohaiSea(37°07′—41°N,117°35′—121°10′E)isashallowsemi-enclosedsea.SincetheBohaiSeaistheonlyinnerseaofChinaandalsoanimportantstra-tegicsea,itisoneofthemostinvestigatedseasinChina.Alargenumberofstudiesonthetideandthetidalcurrentaswellasnumericalsimulationofcirculationhavebeencarriedout,enhancingourunderstandingoftheBohaiSea.Long-termvariationsoftheseasurfacesalinity(SSS)andseasurfacetemperature(SST)oftheBohaiSeawereanalyzed.Linetal.[1]foundthatthepositivetrendsoftheannualmeanS…     

海水养殖对海域生态系统的影响及其生物修复

海水养殖业的迅速发展对海域生态系统产生了一系列的严重影响,本文综述了海水养殖带来的营养盐污染及沉积环境变化、药物使用污染、对天然生物的影响等问题.对于海水养殖造成的问题,有着多种治理方式,基于养殖生态系统的生物修复,是近年来新兴的安全有效的修复方法.本文介绍了微生物修复、大型海藻修复、贝-藻修复、人工湿地修复等生物修复方法及其研究进展.随着研究的不断深入,治理的方式也越来越多,但要想从根本上解决海水养殖带来的污染及影响,基于生态系统的海水养殖管理乃是实现海水养殖业可持续发展的关键.     

鳟鱼海水网箱养成及相关技术的初步研究

在鳟鱼网箱养成及长途运输、海水驯化等专项研究的基础上,分别对鳟鱼海水养成及相关技术进行了研讨,提出了鳟鱼海水养成的关键技术和影响鳟鱼长途运输及海水驯化的主要因素,为开发鳟鱼海水驯养提供实用参考。     

^226Ra evidence for the ecosystem shift over the past 40 years in the North Pacific Subtropical Gyre

Surface seawater was collected for ~(226)Ra measurement in the North Pacific Subtropical Gyre from July to October, 1999 and October to December, 2003. Combined with the historical data reported for this sea area, a declined trend of surface ~(226)Ra concentrations was observed since 1960s, indicating the ecosystem shift in response to global warming. On one side, the enhanced stratification of the upper water column resulting from global warming reduced the ~(226)Ra input from the depth, on the other, the temporal increase of biological production resulting from the climate-related ecosystem structure change strengthened the ~(226)Ra removal from the surface ocean. Both the physical and biological processes resulted in the decrease of surface ~(226)Ra concentrations in the North Pacific Subtropical Gyre. The temporal trend of surface ~(226)Ra concentrations was consistent with the trends of chlorophyll a, silicate, phosphate and primary production previously reported. This study provided ~(226)Ra evidence for the ecosystem shift under global change.     

浅谈海水淡化技术与应用

针对我国淡水资源短缺的问题,提出了实施海水淡化缓解淡水资源紧缺的必要性。从蒸馏法、电渗析法、反渗透法方面介绍了海水淡化的基本方法及原理,并且论述了海水淡化的工程技术问题和海水淡化的应用情况。     

湛江市海水养殖业的环保问题及综合整治对策

根据湛江市海水养殖业的特点与现状及其存在的环保问题进行分析研究,提出了适合湛江海水养殖业环境综合整治的对策。