摘要
从水文、水质、底质和生物生态等不同指标着手,筛选出9个二级指标和16个三级指标,建立了一套象山港海域生态分区指标体系.并利用GIS图层叠加技术对象山港海域进行空间异质性分析,将象山港从外湾至内湾划分为A、B、C、D、E 5个区.其中,A区和B区水交换能力较强,盐度较高,浮游生物以外洋种为主,底栖群落为粘土质粉砂-多毛类-织纹螺-蛇尾类群落,主要环境问题是水体重金属污染和沉积物石油类污染;C区水交换能力较弱,水温较高,D区和E区水交换能力差,盐度相对较低,水温相对较高.C区和D区浮游生物以近岸温带种和暖海种为主,主要生态问题是水体重金属和石油类污染,有机污染和富营养化.E区盐度低,浮游生物以半咸水种群为主,主要生态问题是有机污染、富营养化和重金属污染.
16 third hierarchy and 9 second hierarchy indicators are selected for the study from disciplines such as hydrology, water quality, sediment quality, bioecology and etc. A set of index system of eco-regionalization in Xiangshan Bay was established by the indexes. Based on GIS overlaid maps on the dimensional heterogeneity of Xiangshan Bay, the Bay can be regionalized into 5 areas. In area A and B, water exchange quickly and high salini- ty and offshore plankton species existed as a main feature. And the benthic community is presented by the clayey silty-polychaete-nassariidae-ophiurid. The environmental problems are heavy metal pollution in water and oil poilu-tion in the sediments. In area C, water exchange is weak and the water temperature is higher. In area D and E, the water exchange is poor with low salinity and relative high water temperature. In area C and D, temperate coastal species and warm sea species are dominant. The ecological problems are the water pollutions of heavy metals, oils, organic matters and eutrophication. The salinity in area E is low characterized by brackish plankton species. The main ecological problems of area E are organic pollution, eutrophication and heavy metal pollution.
出处
《应用海洋学学报》
CSCD
北大核心
2015年第4期509-517,共9页
Journal of Applied Oceanography
基金
国家海洋局环境评价专项资助项目(DOMEP(MEA)-03-02)
关键词
海洋生物学
生态分区
指标体系
生态特征
生态问题
象山港
marine biology
eco-regionalization
index system
ecological features, ecological problem
XiangshanBay
