摘要
采用Michaelis-Menten动力学方法,研究了浒苔对NO3-N、NH4-N和CO(NH2)2吸收利用关系。结果显示,浒苔对三种不同氮源的Ks(表观米氏常数)大小顺序为:NO3-N>NH4-N>CO(NH2)2,表明浒苔对有机氮的亲和力大于对无机氮的亲和力,且对NH4-N的亲和力大于其对NO3-N的亲和力;浒苔对三种不同氮源的最大吸收速率顺序为:NO3-N>NH4-N>CO(NH2)2,表明浒苔对氮源的吸收潜力由大到小依次为NO3-N、NH4-N、CO(NH2)2。
A large scale of Enteromorpha prolifera tide occurred in the coastal area of Qingdao in 2008 utilizations of NO3-N 、 NH4-N and CO（NH2）2 by Enteromorpha prolifera and the absorption kinetics of Michaelis-Menten were studied in this paper. The apparent Michaelis constant Ks for various nitrogen species followed the order of NO3-N 〉NH4-N〉 CO（NH2）2, indicating that Enteromorpha prolifera has affinity to organic nitrogen than to inorganic nitrogen. In addition, Vmax for various nitrogen species followed the order of NO3-N 〉NH4-N〉 CO（NH2）2indicating that the order of Enteromorpha prolifera absorbing potential on different types of nitrogen is NO3-N 〉 NH4-N 〉 CO（NH2）2.
出处
《海洋科学》
CAS
CSCD
北大核心
2011年第4期51-54,共4页
Marine Sciences
基金
国家重点基础研究发展计划项目(2010CB428701)
中国海洋大学SRTP项目(0811010308)
关键词
氮源
浒苔
吸收动力学
米氏方程
nitrogen source
Enteromorpha prolifera
absorption kinetics
Michealis equation
