河口是海水和淡水交汇和混合的部分封闭的沿岸海湾,是地球上两类水域生态系统之间的交替区。河口受到自然和人类的双重影响。随着世界人口数量的大幅增加和经济的快速增长,河口与人类的关系日益密切。河口生态系统为人类提供了丰富的服务功能,具有重要的经济价值;同时,河口环境也是最易受人类活动破坏的区域,污染、淤积、富营养化、资源枯竭等问题日益突出。因此,河口生态系统的研究越来越受到人们的重视。目前,国内外对生态系统健康的研究尚不成熟,未形成完整的评价指标体系和评价方法,而河口生态系统健康评价方面的研究更是少之又少。本文以福建省九龙江河口为例,以PSR模型为基本框架构建指标体系,尝试对九龙江河口生态系统健康进...Estuary is a partially closed coastwise bay where seawater and freshwater mix.Two types of ecosystem pool at the estuary. Estuary is influenced by both nature and human. As the world population and economy greatly increase, the relationship between estuary and human is more and more closely. The estuary ecosystem has important value, as it provides abundant products and services to human. At the s...学位:理学硕士院系专业:海洋与环境学院海洋学系_海岸带综合管理学号:2005130219