生态与农村环境学报Issue(3)：366-371,6.DOI:10.11934/j.issn.1673-4831.2015.03.015
铜绿微囊藻水华对水泥界面磷素动态影响的模拟
Effects of Microcystis aeruginosa Bloom on Dynamics of Phosphorus at Interface of Water and Sediments:A Sim- ulation Study
摘要
Abstract
Water and sediment were sampled from the Meiliang Bay of the Taihu Lake, China, to build up a simulated sediment⁃water system with Microcystis aeruginosa added for simulation of the occurrence of Microcystis aeruginosa bloom, with a view to defining how and to what extent alga bloom contributes to variation of phosphorus in the sediment⁃water in⁃terface. Microcystis aeruginosa in the water column always stayed in a state of alternation of proliferation and suspension during the incubation period (238 days). Proliferation of the algae increased pH in the overlying water by 11%-14%. Af⁃ter the first boom of proliferation of the algae, TP in the water decreased by over 90%, while organic P (Or⁃P) in the sed⁃iment increased substantially. The proportion of water⁃soluble P (WP) in TP decreased from the initial 93% to 11% dur⁃ing the period of alternation of proliferation and suspension, while the content of Or⁃P alternated decreasing and increasing during the period. WP contents in both the water and the sediment dropped rapidly to a very low level during the first boom of proliferation of the algae, but afterwards, the content bounced back on average by 2�7 times in the water and 1�7 times in the sediments. In the sediment, activity of alkaline phosphatase was negatively correlated with Or⁃P content ( P<0�05) and positively correlated with WP content ( P<0�01) . Hence, it is believed that quite a portion of alga cells rapidly decay⁃ed and decomposed during the bloom releasing a considerable amount of WP , which to a certain extent sustained the popu⁃lation of Microcystis aeruginosa in alternation of proliferation and suspension.关键词
铜绿微囊藻/磷/碱性磷酸酶Key words
Microcystis aeruginosa/phosphorus/alkaline phosphatase分类
资源环境引用本文复制引用
朱咏莉,吴清,徐莎,吴丽云,韩建刚..铜绿微囊藻水华对水泥界面磷素动态影响的模拟[J].生态与农村环境学报,2015,(3):366-371,6.基金项目
国家自然科学基金（40901112）；江苏高校优势学科建设工程资助项目（ PAPD）；南京林业大学引进高层次人才和高层次留学回国人员科研基金 （）
