文章摘要
南春容,王铁杆,张鹏,张立宁.南麂列岛铜藻氮磷吸收特征研究[J].上海海洋大学学报,2014,23(5):706-711
南麂列岛铜藻氮磷吸收特征研究
Absorption characteristics of N and P by a macroalga,Sargassum horneri, in Nanji Islands
投稿时间:2014-03-24  修订日期:2014-05-19
DOI:
中文关键词: 铜藻  磷吸收动力学  氮磷比  硝氮氨氮比  吸收速率
英文关键词: Sargassum horneri  phosphate uptake kinetics  N/P  NH4+-N/NO3--N  uptake rate
基金项目:国家海洋公益性研究专项(201105008-4)
作者单位E-mail
南春容 温州医科大学 生命科学学院, 浙江 温州 325035  
王铁杆 浙江省海洋水产养殖研究所, 浙江 温州 325000 wtg605@163.com 
张鹏 浙江省海洋水产养殖研究所, 浙江 温州 325000  
张立宁 浙江省海洋水产养殖研究所, 浙江 温州 325000  
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中文摘要:
      实验室条件下测定了:(1)不同温度下,铜藻的磷吸收动力学;(2)氮磷比对铜藻氮磷吸收速率的影响;(3)不同化合态氮对铜藻氮磷吸收速率的影响;(4)成熟铜藻体内总氮总磷含量。结果显示:(1)20℃时,铜藻对磷的半饱和吸收常数最低,最大吸收速率最大;(2)氮浓度一定时,随着氮磷比值升高,铜藻对氮磷的吸收速率皆下降;磷浓度一定时,随着氮磷比值升高,铜藻对氮的吸收速率增加,对磷的吸收速率下降;(3)磷充足时,铜藻对硝氮的吸收速率随着氨氮硝氮比升高而下降,对氨氮和磷的吸收速率随着氨氮硝氮比升高先上升后下降;(4)干燥铜藻体内总氮总磷含量分别为5.70%和0.18%。
英文摘要:
      Three uptake experiments were performed under laboratory conditions: (1)Phosphate uptake kinetics of macroalga, Sargassum horneri, between 5-25℃;(2)Effect of N:P ratio on the uptake of N and P by S.horneri; (3)Effect of NH4+-N/NO3--N ratio on the uptake of N and P by S.horneri.The results were: (1)The maximum absorption rate(Vmax)rises with temperature variation between 5-20℃,and reaches the max at 20℃; The half saturated absorption constant (Km) decreases with temperature variation between 5-20℃, and reaches the min at 20℃; (2)when the N concentration was constant, the uptake rate of N and P decreases with the N:P ratio variation between 16:1 to 256:1; While the P concentration was constant, the uptake rate of N rises, and P decreases with the variation of N:P ratio.(3)when phosphate is adequate, the uptake rate of NO3--N has a negative relation with NH4+-N/NO3--N, while NH4+-N and P have a positive relation with NH4+-N/NO3--N variation between 1:1-8:1, and a negative relation with that above 16:1.(4)The TN and TP in S.horneri are 5.70% and 0.18%, respectively.
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