摘要
依据浙江省舟山海洋生态环境监测站1992—2011年间对杭州湾海域生态环境质量的监测数据,对该海域生态环境的变化及其发展趋势进行了分析。结果表明,从整体上看杭州湾海域生态环境未出现明显的改善趋势,生态环境质量不容乐观:1992—2011年杭州湾海域无机氮、活性磷酸盐的年均浓度以及富营养化指数均呈现显著的增长趋势,DO浓度则呈现显著的下降趋势,表层沉积物质量也未有明显改善;研究期浮游动物、底栖生物的种类数和生物量均呈现下降趋势,群落结构趋向简单、小型化,而浮游植物的种类数和生物量变化趋势不明显;1994年起,杭州湾海域全部处于严重富营养化状态。在此基础上,探讨了杭州湾海域生态环境问题产生的根本原因,并提出了生态环境保护对策。
According to the ecological environmental quality monitoring data of Hangzhou Bay from 1992 to 2011, the changes of environmental features and responses of ecosystems in Hangzhou Bay were analyzed. The results showed that, the ecological environment of Hangzhou Bay had no obvious improvement, ecological environment quality was not optimistic. During the study period,the annual concentration of DIN,DIP and eutrophication index showed a significant growth,while a significant decline trend of DO was observed; the quality of sediment also presented no sig- nificant improvement. At the same time,species number and biomass of zooplankton, benthic animal showed a down- ward trend, the community structure was getting simpler and smaller, while the change of phytoplankton was not obvi- ous. Hangzhou Bay had been in severe eutrophic state since 1994. Finally,the fundamental causes of ecological prob- lems in Hangzhou Bay were discussed,and protection countermeasures were puts forward.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2014年第3期14-19,25,共7页
Environmental Pollution & Control
基金
环保公益性行业科研专项(No.201309008)
中国环境监测总站转型发展科研支撑项目(No.2011ZX-HY003-01)
关键词
杭州湾
生态环境
变化
趋势
Hangzhou Bay
ecological environment
change
trend
