沉积物再悬浮氮磷释放的机制与影响因素  

Mechanism and Influencing Factors of Nitrogen and Phosphorus Release via Sediment Re-suspension

作　　者：刘伟[1,2] 周斌 王丕波 陈庆锋[1] 马君健 李青[1] 张婧 LIU Wei;ZHOU Bin;WANG Pi-bo;CHEN Qing-feng;MA Jun-jian;LI Qing;ZHANG Jing(Shandong Analysis and Test Center,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250014,China;Shandong Provincial Key Laboratory of Marine Ecology and Environment&Disaster Prevention and Mitigation,Qingdao 266061,China;Marine Engineering Prospecting Institute of North China Sea,State Oceanic Administration,Qingdao 266061,China)

机构地区：[1]齐鲁工业大学(山东省科学院),山东省分析测试中心,济南250014 [2]山东省海洋生态与防灾减灾重点实验室,青岛266061 [3]国家海洋局北海海洋工程勘察研究院,青岛266061

出　　处：《科学技术与工程》2020年第4期1311-1318,共8页Science Technology and Engineering

基　　金：山东省海洋生态环境与防灾减灾重点实验室开放基金(201702);国家自然科学基金(41877041);山东省自然科学基金(ZR2016YL003)。

摘　　要：在对沉积物再悬浮的诱因和方式进行分析的基础上,系统探讨了沉积物氮磷释放进入水体的机制与影响因素,提出了沉积物再悬浮引起的氮磷释放研究中应重点关注的问题。主要结论包括:沉积物主要因波浪与水流、人类活动及生物扰动等诱因而发生再悬浮;沉积物-水界面上氮磷不同形态之间的转化及迁移为沉积物氮磷的释放机制;上覆水体理化性质(如pH、盐度、温度、溶解氧与氧化还原电位)、沉积物性质(如粒径、氮磷赋存形态)、扰动时间与强度是沉积物再悬浮氮磷释放的关键影响因素。进一步研究应着重从沉积物再悬浮过程中氮磷释放的动力学过程、再悬浮沉积物氮磷释放的生物影响程度等方面深入开展。Mechanism and influencing factors of nitrogen and phosphorus release via sediment re-suspension were analyzing the inducement and pattern of re-suspension,and some future important issues were put forward.re-suspension of sediment is mainly caused by wave and current,human activities,and bioturbation.The form transformation and migration of nitrogen and phosphorus at the interface of water and sediment are the releasing mechanism.Physiochemical properties(e.g.pH,salinity,temperature,dissolved oxygen,and redox poential)of overlying water,sediment properties(e.g.grain size,nitrogen-phosphorus forms),time and intensity of disturbance are the key influencing factors for nitrogen and phosphorus release.The future research should focus on the dynamic process of the released nitrogen and phosphorus and their biotic influence extent in the process of sediment re-suspension.

关 键 词：沉积物 再悬浮 氮 磷 释放 

分 类 号：X142[环境科学与工程—环境科学]