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淡水体系中透明胞外聚合颗粒物(TEP)的研究进展

DOI: 10.11867/j.issn.1001-8166.2014.10.1149, PP. 1149-1157

Keywords: 透明胞外聚合颗粒物,湖泊,碳循环,藻类水华,水处理

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Abstract:

透明胞外聚合颗粒物(TransparentExopolymerParticles,TEP)是水体中一类特殊的自由形态胞外聚合物(ExtracellularPolymericSubstances,EPS),同时具有固相胶体相两相特点以及低密度、高碳氮比、高黏性等特点,因而对水体生态系统中的地球化学循环产生重要的作用。通过对国内外文献的查阅及太湖的调查研究,概述了国内外对于TEP研究的现状与动态。对其来源及形成,包括丰度分布、数量及生态意义进行综述。需要指出的是,尽管目前已经有许多关于海洋中TEP特性的研究,但是,对于淡水湖泊中TEP的研究仍然非常稀少。说明TEP在营养元素的地球化学循环过程中的作用及其重要性并没有得到充分的认识。未来的研究方向应该侧重淡水生态体系中TEP的来源及其形成机制方面,特别是与EPS库的其他形态之间的相互转化关系及与微生物、浮游植物(包括与水华暴发蓝藻)新陈代谢之间的关联机制,和TEP的降解、归趋及循环,以及对水体生态系统的影响等方面。此外,饮用水或污水处理中TEP对处理工艺的影响需得到重视。

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