生态修复工程前后水生环境变化研究--以虎门大桥(广州段)北侧红树林海岸带为例  

The changes of the aquatic environment before and after ecological restoration projects--Taking mangrove coastal zone(Guangzhou section)on the north side of the Humen Bridge as an example

作　　者：颜港归 张鹏[1,2] 张庆华 彭卫平[1,2] YAN Ganggui;ZHANG Peng;ZHANG Qinghua;PENG Weiping(Guangzhou Urban Planning&Design Survey Research Institute,Guangzhou,510060,China;Guangdong Enterprise Key Laboratory for Urban Sensing,Monitoring and Early Warning,Guangzhou510060,China)

机构地区：[1]广州市城市规划勘测设计研究院,广州510060 [2]广东省城市感知与监测预警企业重点实验室,广州510060

出　　处：《环境保护科学》2023年第3期89-95,共7页Environmental Protection Science

基　　金：广东省城市感知与监测预警企业重点实验室基金项目(2020B121202019);广州市城市规划勘测设计研究院科技基金项目(RDI220200204047)。

摘　　要：为了研究虎门大桥(广州段)北侧红树林海岸带生态修复工程前后水生环境变化,文章对研究区内海水水质、沉积物化学特征、浮游动植物种类与细胞密度进行对比分析,结合Shannon-Wiener生物多样性指数,探寻出研究区生态修复工程前后水生环境变化规律。结果表明:生态修复工程前,浮游植物群落以绿藻类为主,浮游动物群落以轮虫类为主;生态修复工程后,浮游植物群落以硅藻类为主,浮游动物群落以枝角类为主;生态修复工程后较前,区内海水与沉积物中锌、铬、铜和铅等重金属浓度明显减少,浮游植物细胞密度与种群数量均增加,浮游动物细胞密度增加但种群数量下降。综合研究发现海岸带生态修复工程对水生环境有积极的改善作用。To investigate the changes in the aquatic environment before and after the ecological restoration project in the mangrove coastal zone on the northern side of Humen Bridge(Guangzhou section),the seawater quality,sediment chemical characteristics,phytoplankton species and density,and combined with the Shannon-Wiener diversity index was used to explore and investigate the change performance of the aquatic environment before and after the ecological restoration in the study area.The results showed that before the ecological restoration project,the dominant planktonic plant community was composed of green algaes,while the zooplankton community was dominated by rotifers.After the ecological restoration project,the phytoplankton community was dominated by diatoms,and the zooplankton community was dominated by cladocerans.Compared to the prerestoration conditions,the concentrations of heavy metals such as zinc,chromium,copper,and lead in seawater and sediments were significantly decreased after the ecological restoration project.The cell density and population of phytoplankton was increased while the cell density of zooplankton increased with a lower population.Thus,coastal ecological restoration projects have a positive effect on the improvement of the aquatic environment.

关 键 词：虎门大桥 红树林海岸带 生态修复 水生环境变化 

分 类 号：X55[环境科学与工程—环境工程]