水流条件对苦草及菖蒲磷累积输运特性的影响  

Influence of Flow Condition on Phosphorus accumulation and Transportation of Vallisneria natans and Acorus calamus

作　　者：巫丹 凌虹[1,2] 黄夏银 周旭[1,2] 黄毕原 Wu Dan(Jiangsu Provincial Academy of Environmental Science,Nanjing 210036,China;Jiangsu Provincial Key Laboratory of Environmental Engineering,Nanjing 210036,China)

机构地区：[1]江苏省环境科学研究院,江苏南京210036 [2]江苏省环境工程重点实验室,江苏南京210036

出　　处：《安徽农学通报》2018年第22期24-28,52,共6页Anhui Agricultural Science Bulletin

基　　金：国家十二五水体污染控制与治理科技重大专项太湖流域水环境管理技术集成综合示范项目(2012ZX07506-001):太湖流域(江苏)水生态功能分区与标准管理工程建设课题

摘　　要：采用自主研发的浅水湖泊表面风应力扰动模拟装置,选择太湖常风速作为典型动态工况,选用苦草和菖蒲分别作为沉水植物和挺水植物的代表,研究在生长期内水生植物累积输运磷素的特性对长时间水动力作用的响应过程。结果表明:在扰动风速为5m/s的动态水体中长期生长的苦草,其叶片受到水流胁迫,叶片对磷的吸收和富集受到抑制,植株营养的走向趋于根系储磷;而动水环境促进了菖蒲的新陈代谢,其叶片对磷的吸收和富集、根部向叶片营养的输送、根部自身的储磷能力都得到了提高。In this study,an especial equipment was developed to simulate the wind-induced current,Taihu lake was chosen as the research object,Vallisneria natans and Acorus calamus were planted respectively. For Vallisneria natans,based on the long-time hydrodynamic force with the typical velocity in Taihu Lake,the blade growth was restrained,the phosphorus enrichment of leaves were inhibited,the transportation of phosphorus tended to root storage.For Acorus calamus,the dynamic water environment promoted the metabolism,the assimilation and enrichment for phosphorus was promoted,the transportion of phosphorus from root to blade was strengthened,and the store of phosphorus in root was increased. The research results would be beneficial to reveal the environmental function of aquatic plants which provides the theoretical foundation for bio-control of lake eutrophication.

关 键 词：苦草 菖蒲 水动力 磷 

分 类 号：X5[环境科学与工程—环境工程]