海水养殖与生态环境关系的研究——Ⅰ.无机氮对浮游植物生长的影响     

李文权  郑爱榕  李淑英 《热带海洋学报》1993,(3)

采用中尺度受控生态实验、小型混养实验和虾池取样测定,研究海水中无机氮、N/P比值和藻类光合作用速率的变化规律,分析了无机氮和溶解有机氮(DON)的相互转化,比较了钙质角毛藻对不同形式无机氮的吸收,探讨了人工养殖海水中无机氮对浮游植物生长的影响。  相似文献   

若干生态因子对缢蛏稚贝生长和存活的影响     

许章程  韦信敏 《台湾海峡》1990,9(1):62-68

本文系在实验室条件下,研究用不同的饵料密度、稚贝密度、光照强度、底质以及这些因子相结合对缢蛏稚贝生长和存活的影响,从中找出缢蛏育苗的最佳培养条件,为人工或半人工育苗提供参考。  相似文献   

大眼金枪鱼的资源现状   总被引：4，自引：0，他引：4  

刘群  任一平  王艳君  尤凯 《海洋湖沼通报》2003,(2):74-78

大眼金枪鱼的分布很广 ,在南、北纬 4 0°以内的太平洋、印度洋和大西洋均有分布 ,是金枪鱼渔业的重要捕捞种类之一。本文分别论述了大眼金枪鱼在大西洋、印度洋和太平洋的渔业概况、生物学特性、资源状况和管理对策。  相似文献   

福建省三沙湾海洋生态环境质量综合评价   总被引：6，自引：2，他引：6       下载免费PDF全文

蔡清海  杜琦  钱小明  许翠娅 《海洋学报》2007,29(2):156-160

三沙湾(由东吾洋、官井洋和三都澳等几个部分组成)位于福建省东北部沿海,四周群山环抱,海岸线曲折,水域辽阔,是个天然良港.三沙湾历史上水质优良,水产资源丰富,是中国著名的大黄鱼产卵场,曾经有许多洄游性经济类鱼虾在这里产卵繁育.但近些年来富营养化问题日趋严重,赤潮时有发生,给三沙湾的环境生态造成了危害.过去对三沙湾的水体和沉积环境虽有研究[1~3],但对其生态环境质量的综合研究尚未见报道.  相似文献   

试论生态园林在福建沿海城市可持续发展中的地位   总被引：1，自引：1，他引：1  

黄义雄  林从华 《台湾海峡》2001,20(1):110-114

本文从可持续发展角度出发，对福建沿海城市发展过程中存在的问题进行评价，分析了生态园林在城市可持续发展中的地位和作用，并提出出在福建沿海城市建设生态园林的对策。  相似文献   

黄河口地区湿地的研究和保护   总被引：1，自引：0，他引：1  

丁东  李日辉 《海岸工程》2001,20(3):33-38

黄河口地区湿地的形成、分布规律与黄河流路的频繁改道及海洋侵蚀作用紧密相连 ,构成湿地形成和消亡的重要因素。黄河口湿地的保护中存在不少需要协调解决的问题 ,所以要加强科学研究 ,建立数据库 ,对湿地进行动态监视和模拟。黄河口区的湿地保护对其经济发展有着重要的意义。  相似文献   

基于多种生物指数的中国渤海莱州湾海域底栖生境健康评价     

王丽  罗先香  杨建强  张娟  樊玉清  沈佳裕 《海洋学报(英文版)》2020,39(2):49-58

As an important part of the Bohai economic rim, the Laizhou Bay has been stressed by serious eco-environmental problems in recent years. In this study, the Shannon-Wiener index(H′), AZTI's marine biotic index(AMBI) and the multivariate AMBI(M-AMBI) were used to assess the ecological quality status(EQS) of the Laizhou Bay according to macrobenthos data collected annually in August 2011–2014. The results showed that the overall benthic habitat quality in the Laizhou Bay was assessed as "Good". However, 25% of the samples were classified as"Moderate", "Bad" or "Poor" status under degraded conditions. Ecological group Ⅲ(EGⅢ) species which had a certain tolerance to environmental disturbances had a higher proportion in each station, and most of them had appeared the pollution indicator species Capitella capitata. This indicated that the benthic habitat in the Laizhou Bay had been disturbed and polluted to some extent. The comparison of the three indices evaluation result and the RDA analysis showed that the H′ and M-AMBI were more suitable when the relative abundance of the single species was high and the macrobenthic community was significantly imbalanced; when the relative abundance of opportunistic species(EGIV and EGV) was high, the AMBI and M-AMBI could reflected the EQS objectively; in an undisturbed and polluted environment, all the three indices could indicate the benthic habitats quality. In summary, the better correlation between the three indices and environmental factors showed that they were well responsive to the tendency of the benthic habitats quality in the Laizhou Bay.  相似文献   

珠江口表层沉积物有害重金属分布及评价   总被引：32，自引：0，他引：32  

黄向青  梁开  刘雄 《海洋湖沼通报》2006,(3):27-36

应用近期珠江口水域表层沉积物有害重金属测试数据,分析了其分布特征及相互关系,并根据Hakanson潜在生态风险评估方法,计算分析了各单项因子潜在风险指数以及重金属风险指数(单项因子指数累计),结果表明,各因子潜在生态风险程度不一,局部镉、汞的较高,前者达到强,后者达到中等,而砷、铜、铅、铬、锌依次偏低,只达到轻微。从空间分布来看,重金属污染潜在生态风险程度以澳门东南最高,达到强这一等级。  相似文献   

Local ecological knowledge and practical fisheries management in the tropics: A policy brief     

Douglas Clyde Wilson  Jesper Raakjr  Poul Degnbol 《Marine Policy》2006,30(6):794-801

This policy brief is a summary product of seven case studies examining the integration of local ecological knowledge in fisheries management. Each case began with a series of in-depth interviews with local fishers, after which their answers were examined using both social and biological approaches to assess the possibility of using the information as the basis of simple, valid and locally acceptable indictors for fisheries management. We found that allocation and knowledge issues are closely interlinked and must be addressed in concert, and that the negotiation of shared understandings between multiple sources of knowledge must be a continuous process within an adaptive framework rather than a question of identifying a fixed set of indicators.  相似文献   

山东省海水鱼类增养殖业现状及其可持续发展的探讨     

刘世禄  王波 《海洋科学进展》2002,20(1):78-85

介绍了适宜山东沿海鱼类增养殖的主要种类 ,回顾了山东省主要海水鱼类增养殖种类研究和生产发展的历史、山东省近年海水鱼类养殖概况。最后论述了今后的发展战略与对策  相似文献