氮磷营养盐对连云港海域浒苔叶绿素a含量的影响
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摘要
以连云港海域两种主要类别浒苔为研究对象,考察氮、磷营养盐的添加对浒苔叶绿素a含量的影响。结果表明,添加氮能够明显提高浒苔叶绿素a含量,效果优于磷的添加。缘管浒苔较浒苔属浒苔对营养盐的利用效率更好,叶绿素a含量提升更高。两种氮源利用实验显示,浒苔对NH_4~+的吸收速率高于对NO_3~-的吸收,NH_4~+对浒苔叶绿素a的累积作用更加明显,NH_4~+与NO_3~-等比例存在时,NH_4~+与NO_3~-存在一定竞争抑制作用。
In order to study the effects of nitrogen and phosphorus on chlorophyll a content of Enteromorpha sp.in Lianyungang coastal waters,experiments with various N or P concentrations were conducted.The results showed that the chlorophyll a content was accelerated significantly upon the addition of N compared with P.Enteromorpha linza had better nutrient utilization efficiency than Enteromorpha prolifera.The experiments of nitrogen uptake in the forms of NH_4~+ and NO_3~- indicated that the absorption rate of NH_4~+ was greater than that of NO_3~-,and NH_4~+ was more beneficial to the accumulation of chlorophyll a.Decrease in absorption efficiency due to competition inhibition under equal-ratio of NH_4~+ and NO_3~- condition.
In order to study the effects of nitrogen and phosphorus on chlorophyll a content of Enteromorpha sp.in Lianyungang coastal waters,experiments with various N or P concentrations were conducted.The results showed that the chlorophyll a content was accelerated significantly upon the addition of N compared with P.Enteromorpha linza had better nutrient utilization efficiency than Enteromorpha prolifera.The experiments of nitrogen uptake in the forms of NH_4~+ and NO_3~- indicated that the absorption rate of NH_4~+ was greater than that of NO_3~-,and NH_4~+ was more beneficial to the accumulation of chlorophyll a.Decrease in absorption efficiency due to competition inhibition under equal-ratio of NH_4~+ and NO_3~- condition.
引文
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[3]于波,汤国民,刘少青.浒苔绿潮的发生、危害及防治[J].山东农业科学,2012,44(3):102-104.
[4]齐衍萍,郭莉莉,尹维翰.黄海浒苔绿潮防控对策研究[J].海洋开发与管理,2016,33(8):90-92.
[5]刘佳,张洪香,张俊飞,等.浒苔绿潮灾害对青岛滨海旅游业影响研究[J].海洋湖沼通报,2017,3:130-136.
[6]刘材材,徐韧,何培民,等.南黄海绿潮暴发与紫菜养殖的关系[J].海洋科学,2017,41(2):35-43.
[7]洪刚强,王萍,吴常文.活性磷对浒苔生长和叶绿素含量影响的初步研究[J].河北渔业,2011,5:16-18.
[8]李信书,徐军田,姚东瑞,等.富营养化与生长密度对绿潮藻浒苔暴发性生长机制的影响[J].水产学报,2013,37(8):1206-1212.
[9]王春艳,谢宏全,卢霞.光谱测试实验下的浒苔全生命周期生长研究[J].淮海工学院学报,2011,20(4):86-89.
[10]张志良,瞿伟菁.植物生理学实验指导[M]. 3版.北京:高等教育出版社,2003.
[11]杨庶,杨茜,曲克明,等.南黄海近海富营养化长期演变的沉积记录[J].海洋与湖沼,2017,48(1):22-28.
[12]郭伟.黄海绿潮年际变化特征及灾害分析[D].北京:天津科技大学,2017.
[13]齐明燕.浒苔(Ulva prolifera)及缘管浒苔(Ulva linza)对不同形态氮营养盐的吸收利用研究[D].青岛:中国海洋大学,2015.
[14]李文慧,朱明,刘冉,等.氮磷营养盐因子对缘管浒苔生长、叶绿素荧光特性和氮磷富集的影响[J].生态与农村环境学报,2015,31(4):553-558.
[15]李俭平,赵卫红,付敏,等.氮磷营养盐对浒苔生长影响的初步探讨[J].海洋科学,2010,34(4):45-48.
[16]田千桃,霍元子,王阳阳,等.浒苔对NH4+-N与NO3--N吸收的相互作用[J].海洋科学,2010,34(7):41-45.
[17]李俭平.浒苔对氮营养盐的响应及其氮营养盐吸收动力学和生理生态研究[D].青岛:中国科学院海洋研究所,2011.