%0 Journal Article
%T Environment Effects of Algae-Caused Black Spots: Driving Effects on the N, P Changes in the Water-Sediment Interface<br>藻源性黑水团环境效应：对水-沉积物界面氮磷变化的驱动作用
%A LIU Guo-feng
%A SHEN Qiu-shi
%A ZHANG Lei
%A FAN Cheng-xin
%A ZHONG Ji-cheng
%A YAN Shao-hua
%A <br>刘国锋
%A 申秋实
%A 张雷
%A 范成新
%A 钟继承
%A 严少华
%J 环境科学
%D 2010
%I 
%X The impact and driving effect of deposited algal cells in the water-sediment interface on the N, P changes were studied through continuous extracted pore water with home-made static experiment. Results showed that dissolved oxygen in water-sediment interface was depleted in 50 min after algal cells settled. Soon the dead algal cells formed the anoxia and strong reducing environment and the dead cells had a severe anaerobic mineralization in the water-sediment interface, also the water bodies had a intense black and stink phenomenon. PO3-4-P, NH+4-N concentration in water-sediment interface increased from the 2nd day after added the algal cells to the sediment interface, and its concentration was 4.00 mg/L and 39.45 mg/L, respectively. Its concentration was the 10 fold and 241 fold higher than that the control experiments at the same time (PO3-4-P, NH+4-N concentration in control experiments was 0.42 mg/L and 0.16 mg/L, respectively). Anaerobic mineralization of dead cells in sediment surface drove the nutrients diffusing upward the overlying water, added the nutrients concentration in water bodies, and it also supplied the nutrient materials for the algal blooms happened again.
%K algal blooms induced black spots
%K water-sediment interface
%K algal blooms
%K nutrients<br>藻源性黑水团
%K 水-沉积物界面
%K 藻华
%K 营养盐
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=85B93E7E996C2B2C232478CBD7ACC068&yid=140ECF96957D60B2&vid=4AD960B5AD2D111A&iid=59906B3B2830C2C5&sid=9ABD94C81D0EE5F7&eid=27FAC91000938407&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=0