%0 Journal Article
%T SIMULATION OF DISSOLVED OXYGEN(DO) VARIATIONS DURING THE DECOMPOSITION PROCESS OF NEMOPILEMA NOMURAI<br>沙海蜇(Nemopilema nomurai)消亡过程中海水溶解氧变化的模拟研究
%A SONG Jin-Ming
%A MA Qing-Xi
%A LI Ning
%A LI Xue-Gang
%A YUAN Hua-Mao
%A DUAN Li-Qin
%A QU Bao-Xiao
%A <br>宋金明
%A 马清霞
%A 李 宁
%A 李学刚
%A 袁华茂
%A 段丽琴
%A 曲宝晓
%J 海洋与湖沼
%D 2012
%I 
%X To understand the influence of the decaying process after a large jellyfish bloom on marine environment,laboratory simulation experiments were performed to study the variations of dissolved oxygen(DO) during the decomposition process of Nemopilema nomurai at different temperature,pH,salinity,and N/P ratios.The results suggested that the decomposition of N.nomurai needed a great deal of oxygen,and the extents of DO decrease were not significantly different under different temperature,pH,salinity,and N/P ratio conditions.Complete decomposition of N.nomurai generally took about 6—7 days and more time was needed under high N/P conditions.The decomposition of N.nomurai caused severe hypoxia of the seawater and the oxygen concentration was below 20% of saturation.Oxygen consumption in the simulation experiments dramatically increased from the second day to the third day and it peaked on the sixth or the seventh day.However,the high DO consumption rates under different N/P conditions appeared in the second day and continued to the seventh day.Different temperature,salinity,pH and N/P ratios in the seawaters caused variations in the extents of DO consumption during the decomposition process.The extents of DO consumption were in the order of temperature(23—30℃) > pH(5.0—9.0) > salinity(21—33) > N/P ratio(16:1—240:1),and the values of 39.9,39.7,38.0,and 35.9 mg/(kg.d),respectively.Consequently,the influence of temperature and pH on the DO consumption was more significant and the influence of N/P ratio and salinity was relatively small.
%K Dissolved oxygen (DO)
%K Marine environment factors
%K Decomposition
%K Nemopilema nomurai
%K Simulation test<br>溶解氧
%K 环境影响
%K 消亡过程
%K 沙海蜇
%K 模拟研究
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=2D9C75573FA3E416&jid=10F18692CD69EACA2DF7FC109993D35C&aid=7382250F555C4C74EB5484584B5E9281&yid=99E9153A83D4CB11&vid=BE33CC7147FEFCA4&iid=38B194292C032A66&sid=51F9E747BA1ACB45&eid=60E9AACF61B3107F&journal_id=0029-814X&journal_name=海洋与湖沼&referenced_num=0&reference_num=0