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   

基于信息熵的溢油对天然渔业可持续承载力损害的评估     

严志宇  王嘉琦  孙冰  付红蕊  任杰 《海洋科学》2020,44(5):71-75

作者基于信息熵理论,以溢油事故对海洋天然渔业损害为切入点探讨海洋生态系统可持续承载力损害评估方法。论文从生态系统状态、功能、污染、修复等4个方面构建了熵流和熵产生指标体系,以"塔斯曼海"轮溢油事故为例进行计算和评估,结果表明:溢油使海洋生态系统的价值产出能力下降94.7%、总的承载力下降194.9%,溢油治理的效果小于溢油对生态承载力的损害。本评价是现有溢油生态损害评价的补充,可为长期生态损害评估、生态修复和环境管理决策提供科学依据。  相似文献   

Climate variability and tropical tuna: Management challenges for highly migratory fish stocks     

Kathleen A. Miller 《Marine Policy》2007

The 1995 United Nations Fish Stocks Agreement facilitates the creation of regional fishery management organizations (RFMOs) to govern harvests of straddling and highly migratory fish stocks. The stability and success of these organizations will depend, in part, on how effectively they can maintain member nations’ incentives to cooperate despite the uncertainties and shifting opportunities that may result from climate-driven changes in the productivity, migratory behavior, or catchability of the fish stocks governed by the RFMO. Such climatic impacts may intensify incentives for opportunism, and create other management challenges for the RFMOs now governing tropical tuna fisheries in the Pacific and Indian Oceans.  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   

Comparison of organotin accumulation in the masu salmon Oncorhynchus masou accompanying migratory histories     

Madoka Ohji  Takaomi Arai  Nobuyuki Miyazaki 《Estuarine, Coastal and Shelf Science》2007,72(4):721-731

In order to examine the accumulation pattern of organotin compounds (OTs) accompanying the migration pattern in diadromous fish, tributyltin (TBT) and triphenyltin (TPT) compounds and their derivatives were determined in the liver, muscle, gill, and ovary tissues of both sea-run and freshwater-resident masu salmon, which are of the same species, Oncorhynchus masou. Their migratory histories were estimated using strontium (Sr) and calcium (Ca) analysis in the otolith. A significant difference in the mean Sr:Ca ratio from the core to the edge of the otolith was found between sea-run and freshwater-resident masu salmon. The TBT concentration in the liver was significantly higher than that in the other tissues in both sea-run and freshwater-resident fishes. In sea-run masu salmon, the TBT concentrations in all tissues except for the ovary were significantly higher than in those of freshwater-resident individuals. In the sea-run type, the percentage of TBT was higher than that of the freshwater-resident type. The TPT concentration in the liver of the sea-run type was also significantly higher than that in the other tissues, while that in the gill of the freshwater-resident type was significantly higher than that in the other tissues except for the ovary. The TPT concentrations found in the liver and muscle of the sea-run type were significantly higher than those in the freshwater-resident type, whereas the values of the gill in the sea-run type were significantly lower than those in the freshwater-resident fish examined. The percentage of TPT in the sea-run type was higher than that of the freshwater-resident type. These results suggest that the sea-run O. masou has a higher ecological risk of TBT and TPT exposure than the freshwater-residents during their life history.  相似文献   

东海北部海域虾类不同生态类群分布及其渔业   总被引：5，自引：0，他引：5  

宋海棠  丁天明 《台湾海峡》1995,14(1):67-72

本文根据1986～1991年对东海北部海域（26°00’～326°00’N，100m水深以浅）虾是调查资料，研究了不同虾类的栖息水深与调查区水系分布之间的关系，把本海区的虾类资源划分为广温低盐，广温广盐和高温高盐三个生态类群，并阐明各生态类群及主要种类的分布特点。文中还叙述了东海区拖虾渔业的发展现状，讨论了今后的发展对策。  相似文献