| 摘要: |
| 通过模拟实验研究了微生物对微囊藻残体(主要为铜绿微囊藻和水华微囊藻)的降解作用。水体内悬浮质和各主要形态磷浓度的变化结果表明:微囊藻的好氧分解符合一级动力学,其悬浮质和颗粒性磷的浓度呈指数关系递减,降解速度分别为 0.227/d和0.088/d。经32d降解后,水体内的总溶解磷(TDP)可达总磷(TP)的53%,而 TDP的主要成分为PO43-。因此,微囊藻的微生物好氧降解对湖泊水质和营养盐的循环,特别是PO43-释放引起的二次污染不容忽视。 |
| 关键词: 微囊藻 好氧降解 太湖 |
| DOI：10.18307/1996.0309 |
| 分类号: |
| 基金项目:中国科学院生态网络资助课题 |
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| Study on the aerobic decomposition of microcystis in Taihu Lake |
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Chen Weimin, Cai Houjian
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Nanjing Institute of Geography and Limnology Chinese Academy of Sciences, Nanjing 210008
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| Abstract: |
| The model experiment of aerobic decomposition of Microcystis spp.(mainly including M.aeruginosa, M.flosaquae) in Taihu Lake was studied.The results show: the decomposition can be approximated by first-order kinetics.The particulate matter and concentration of particle phosphorus are decreased exponentially.The rates of decomposition are 0.227d-1 and 0.088-1、respectively.After 32 days, experiment, the total dissolved phosphorus (TDP) accounts for 53% of total phosphorus (TP), and phosphate (PO43-) is the main component of TDP.During the aerobic decomposition of Microcystis, the water quality and the cycling of nutrient, especially the release of PO43- may not be overlooked. |
| Key words: Microcystis aerobic decomposition Taihu Lake |
