| 再悬浮条件下沉积物内源磷迁移-转化机制研究进展 |
| |
| 引用本文： | 郑西来,张俊杰,陈蕾.再悬浮条件下沉积物内源磷迁移-转化机制研究进展[J].水科学进展,2013,24(2):287-295. |
| |
| 作者姓名： | 郑西来 张俊杰 陈蕾 |
| |
| 作者单位： | 中国海洋大学海洋环境与生态教育部重点实验室,山东青岛 266100 |
| |
| 基金项目： | 国家水体污染控制与治理科技重大专项，水利部公益性行业科研专项经费资助项目 |
| |
| 摘 要： | 对沉积物再悬浮的驱动力及其耦合效应、再悬浮-内源磷迁移转化机制及主要影响因素进行了阐述,探讨了该领域未来可能的研究方向。相关研究发现,沉积物再悬浮的各种驱动力既可以单独作用也可相互耦合,其耦合效应具有显著的时空变异性;再悬浮使还原态沉积物暴露于有氧环境,沉积物中铁、锰的氧化以及沉积物颗粒的吸附促进了内源水溶态无机磷(SRP)的去除,而进入水体的内源有机磷则通过生物矿化和光化学分解转化为SRP;沉积物物化特征、水动力、水生生物以及水体理化性质等因素控制着再悬浮过程中内源磷的迁移和转化。指出再悬浮条件下沉积物内源磷迁移转化的多过程耦合效应、沉积物中磷形态的转化及其生物有效性、内源有机磷矿化与光化学分解机制及其调控因素将是本领域需要进一步研究的重点。
|
| 关 键 词： | 沉积物-水界面 再悬浮 扰动 内源磷 迁移-转化 |
| 收稿时间： | 2012-07-04 |
Advances in the study of migration and transformation mechanisms of endogenous phosphorus via sediment resuspension |
| |
| ZHENG Xilai,ZHANG Junjie,CHEN Lei.Advances in the study of migration and transformation mechanisms of endogenous phosphorus via sediment resuspension[J].Advances in Water Science,2013,24(2):287-295. |
| |
| Authors: | ZHENG Xilai ZHANG Junjie CHEN Lei |
| |
| Institution: | Key Laboratory of Ocean Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China |
| |
| Abstract: | The study reviews the advances of the last decade and summarizes the driving force of sediment resuspension and the coupling effect, the release mechanisms for phosphorus as well as possible influencing factors via sediment resuspension.Relevant researches on the subject show that the driving forces can be in the form of either acting alone or intercoupling.The latter is subject to a great deal of spatial and temporal variability.Reducible sediment suspends into oxic overlying water resulting in the removal of endogenous soluble reactive phosphorus (SRP) via oxidation reactions of Feand Mn and absorption of resuspended sediment particles.While endogenous organic phosphorus is transformed into SRP via biomineralization and photolysis.Factors, including sediment physicochemical properties, hydrodynamics, aquatic organisms and physiochemical properties of overlying water, can affect migration and transformation of phosphorus during sediment resuspension.It is proposed that future studies should improve the understanding of the multi-process coupling effect during endogenous phosphorus migration and transformation via sediment resuspension, transformation of sediment phosphorus forms as well as their bioavailability via resuspension, and mineralization and photolysis mechanisms of organic phosphorus and their regulating factors in frequently-disturbed waters. |
| |
| Keywords: | sediment-water interface resuspension disturbance endogenous phosphorus migration and transformation |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《水科学进展》浏览原始摘要信息 |
| 点击此处可从《水科学进展》下载免费的PDF全文 |
|
