南澳羊屿村围填海拆除工程对水环境的影响  

Impact of reclamation removal on water environment in Yangyu Village on Nan’ao Island

作　　者：徐婉明 邓伟铸 倪锦锋 郑兆勇[1] XU Wanming;DENG Weizhu;NI Jinfeng;ZHENG Zhaoyong(South China Sea Instiute of Planning and Enironmental Research,State Oceanic Administration,Guangzhou 510300,China;Scientific Inostitude of Pearl River Water Resources Protection,Guongthou 510611,China)

机构地区：[1]国家海洋局南海规划与环境研究院,广东广州510300 [2]珠江水资源保护科学研究所,广东广州510611

出　　处：《水资源与水工程学报》2020年第2期115-120,共6页Journal of Water Resources and Water Engineering

基　　金：国家海洋局南海分局局长基金项目(1673)。

摘　　要：为了研究南澳羊屿村围填海拆除工程对周围水环境的影响,采用数值模拟方法,分析工程前后港池水域的流速流向、纳潮量和水体半交换时间的变化情况。结果表明:围填海拆除100 m后,口门附近水域流速增加0.25m/s;港池纳潮量增大30%;港内水体半交换时间缩短1.7 d。总体来说,实施围填海拆除工程,可以增强口门附近水动力条件,增大港池环境容量,提高水体交换能力,改善港内水质环境和生态问题,为编制南澳羊屿村历史遗留围填海项目生态保护修复方案提供科学的依据和客观指导。To study the impact of reclamation removal on the surrounding water environment in Yangyu Village on Nan’ao Island,the numerical simulation method was used to analyze the hydrodynamic environment changes of the tide current,the tidal prism and the water exchange half-life time before and after the removal of the reclamation.The results showed that the flow velocity near the gate increased 0.25 m/s,the tidal prism of the harbor increased by 30%,and the half-life time of the water exchange in the harbor was shortened by 1.7 d after the removal of 100 m.In general,demolishing the reclamation which is located in Yangyu Village on Nan’ao Island can enhance the hydrodynamic conditions near the gate,improve the environmental capacity,increase the water exchange capacity of the harbor,and improve water quality and ecological status.This paper can provide scientific evidence and objective guidance for the ecological protection and restoration scheme for the remaining reclamation project in Yangyu Village on Nan’ao Island.

关 键 词：围填海拆除工程 水动力 水体交换 水环境 

分 类 号：X55[环境科学与工程—环境工程]