摘要
通过对工程海域26个站位的调查采样,研究分析了长江口深水航道治理一期工程对河口生境破碎化的影响。结果表明,工程已对长江河口区局部海域水体和底栖生境破碎化产生了明显影响,而对工程海域小尺度海洋水团、底栖生境和渔业资源生境的破碎化影响最大,造成局部小尺度海洋水团改变,部分渔业资源种类洄游通道、产卵场、肥育场、渔场生境破碎化。建议建立长江口生态特别保护区,加强对河口大型工程综合影响研究与生态修复,加强河口生态系统管理与执法力度,为长江口沿岸城市社会经济的可持续健康发展提供良好的海洋生态环境基础。
This paper preliminarily studies and analyzes the impacts of estuarine training engineering on estuarine habitat fragmentation by a complete ecological investigation conducted in the sea area of No. 1 training project of the deep waterway in the Yangtze River estuary from May to June, 2002. The results show that the large-scale estuarine training project has obviousl and preliminary impacts on the habitats of water body and sediment in the sea area of the Yangtze River estuary. Among these estuarine water masses, benthic and fishery habitat fragmentation is impacted most seriously. The engineering has begun to change the local small-scale ocean water masses and impact the habitat fragmentation of the channels of breeding migration, spawning, growing-up and fishery grounds of partial fishery resources. The authors propose that one special ecological reserve in the Yangtze River estuary should be established to strengthen the studies on the comprehensive influences of large-scale estuarine engineering on restoration of estuarine ecosystems,and to enhance estuarine ecosystem management in order to provide a good ecological and environmental base for sustainable and healthy development of economy in the Yangtze River estuary.
出处
《海洋工程》
CSCD
北大核心
2004年第3期41-47,共7页
The Ocean Engineering
基金
国家重点基础研究发展规划项目(2002CB412406)
国家海洋局青年海洋科学基金资助项目(2002109)
关键词
河口大型工程
生境破碎化
渔业资源
长江口
large-scale estuarine engineering
habitat fragmentation
fishery resources
the Yangtze River estuary
