摘要
利用室内装置模拟的刺参养殖池塘上覆水,在温度为25℃,光照为(4000±200)lx条件下静态培养刚毛藻48 h,定时测定上覆水中总氮(TN)、氨态氮(NH_4^+-N)、硝态氮(NO_3~–-N)、亚硝态氮(NO_2~–-N)、总磷(TP)、活性磷(PO_4^(3–)-P)等营养盐含量,分析了氮磷营养盐含量的动态变化规律,探讨了刚毛藻生物量对沉积物-水界面营养盐含量变化的影响。结果表明,刚毛藻生物量对各营养盐含量的影响存在显著性差异(P<0.05)。随着培养时间延长,上覆水中营养盐含量均呈现先增大后减小的趋势。上覆水中各营养盐含量在培养6～24 h时分别达到最大值,其中当刚毛藻生物量为0.5～4.5 g/L时,TN、NO_3~–-N、NO_2~–-N、NH_4^+-N、TP、PO_4^(3–)-P含量达到最大值。继续培养,上覆水中各营养盐的含量逐渐减小,其中生物量为8.5 g/L时刚毛藻对NO_3~–-N、NO_2~–-N的吸收效果最好;生物量为0.5 g/L时刚毛藻对NH_4^+-N、PO_4^(3–)-P吸收效果最好。因此,高生物量(8.5 g/L)刚毛藻可降低上覆水中NO_3~–-N、NO_2~–-N含量,但低生物量(0.5 g/L)刚毛藻能有效吸收上覆水中的NH_4^+-N、PO_4^(3–)-P。
To study the effect of Cladophora sp.on the nutrient in sediment-water interface,laboratory static culture was conducted.The temperature was 25℃,light intensity was(4000±200)lx.The content of total nitrogen(TN),ammonia nitrogen(NH 4+-N),nitrate(NO3^--N),nitrite nitrogen(NO2^--N),total phosphorus(TP),reactive phosphorus(PO43^--P)in the overlying water was measured periodically.The main results were given as follows:There were significant differences between the nutrient content caused by the biomass of Cladophaora sp.(P<0.05),and their content increased first and decreased with a peak in 6~24 h.The maximum concentration of TN,NO 3-N,NO2^--N,NH 4+-N,TP,PO43^--P was that the amount of algae was 0.5~4.5 g/L.The content of each nutrient gradually decreased,and reached the minimum value when the culture time was more than 24 h.When the biomass was 8.5 g/L,the absorption of NO3^--N and NO2^--N was the best;the biomass of 0.5 g/L was the best for the absorption of NH 4+-N and PO43^--P.Therefore,high biomass(8.5 g/L)Cladophora sp.can reduce NO3^--N and NO2^--N content in overlying water,but low biomass(0.5 g/L)Cladophora sp.can effectively absorb NH 4+-N and PO43^--P in overlying water.
作者
曹学彬
马伟伟
李琦
吴春梅
吴彩蜜
姜爱莉
邢荣莲
CAO Xue-bin;MA Wei-wei;LI Qi;WU Chun-mei;WU Cai-mi;JIANG Ai-li;XING Rong-lian(National Algae and Sea Cucumber Project Technology Research Centre,Shandong Oriental Ocean Sci-Tech Co.,LTD.,Yantai 264005,China;School of Life Science,YanTai University,YanTai 264005,China)
出处
《海洋科学》
CAS
CSCD
北大核心
2018年第6期88-95,共8页
Marine Sciences
基金
国家自然科学基金项目(31572622
31001113)~~
关键词
刺参养殖池塘
刚毛藻
沉积物-水
营养盐
he pond breeding of Apostichopus japonicus
Cladophora sp.
sediment-water
nutritive salt
