Release of colloidal phosphorus, nitrogen and organic carbon in the course of dying and decomposing of cyanobacteria
Release of colloidal phosphorus, nitrogen and organic carbon in the course of dying and decomposing of cyanobacteria
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发表时间：
2007
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通讯作者：
Zhu Guangwei
中科院分区：
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作者：
Zhu Guangwei
通过室内培养，观察了太湖蓝藻的死亡和分解过程。采用错流超滤技术获取水中胶体物质，定期监测水样中胶体态、颗粒态、真溶解态和离子态的磷、氮和有机碳含量。在蓝藻死亡分解过程中，沃茨中胶体态磷、氮、有机碳和颗粒态磷、氮含量均显著升高。胶体磷（CP）、胶体氮（CN）和胶体有机碳（COC）的含量分别达到清水培养时的5倍、9倍和15倍，说明蓝藻分解后可释放出大量的胶体和颗粒状营养物质。总结了蓝细菌死亡分解过程中释放营养的概念模型。
The course of dying and decomposing of cyanobacteria collected from Taihu Lake was observed through indoor culture. Technique of cross-flow super filtration was used to obtain colloidal material in the water, the contents of phosphorus, nitrogen and organic carbon of colloidal, particle, true dissolved and ionic states of water sample were monited regularly. In the course of dying and decomposing of cyanobacteria, the waters contents of colloidal phosphorus, nitrogen, organic carbon and particulate phosphorus and nitrogen all raised markedly. The contents of colloidal phosphorus (CP), colloidal nitrogen (CN) and colloidal organic carbon (COC) reached 5, 9 and 15 times of the culture using water corresponding beginning content respectively, explaining that a great amounts of colloidal and particulate nutrition could be released due to the decomposition of cyanobacteria. A conception model of releasing nutrition in cyanobacteria dying and decomposition courses was summarized.