摘要
根据2004～2008年每年5月和8月对黄河口、长江口及珠江口生态监控区底栖动物的监测结果,对以上三大河口底栖动物的种类数、生物量以及种群密度的现状进行了分析,并将数据与同地区、同季节的历史资料进行对比,分析变化趋势。结果表明,黄河口、长江口、珠江口底栖动物种类数均随时间变化呈明显减少趋势。黄河口春、夏两季底栖动物生物量呈下降趋势;长江口春季底栖动物生物量变化趋势不明显,夏季下降趋势十分明显;珠江口春、夏两季底栖动物生物量变化幅度较大,总体呈上升趋势。黄河口春、夏两季底栖动物种群密度总体呈下降趋势;长江口春季底栖动物种群密度呈下降趋势,夏季较稳定;珠江口春、夏两季底栖动物种群密度呈上升趋势。
The data in the article were obtained from the investigation of estuaries of Huanghe（Yellow） River,Changjiang（Yangtze） River and Pearl River by State Oceanic Administration of China in May and August from 2004 to 2008.The number of species,the biomass and the density of zoobenthos in these estuaries were analyzed and the results were compared with the available previous data in the same area and season.The results showed that there was a decreased tendency of the number of zoobenthos species in the Yellow River Estuary,the Changjiang River Estuary and the Pearl River estuary.In the Yellow River Estuary,the zoobenthos biomass decreased in spring and summer.In the Changjiang River Estuary,there was not an obvious change of zoobenthos biomass in spring but a decline tendency in summer.In the Pearl River Estuary,an increasing tendency of the zoobenthos biomass was observed in spring and summer.The zoobenthos density showed a decreased tendency in the Yellow River Estuary and an increased tendency in the Pearl River Estuary in spring and summer.In the Changjiang River Estuary,the zoobenthos density decreased in spring but was stable in summer.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2011年第1期37-40,共4页
Marine Environmental Science
基金
国家908专项(908-02-04-01
908-02-04-02)
国家海洋局全国近岸生态监控区监测专项
