CAJ | 학술논문

通过现场围隔实验,模拟赤潮发生过程,研究了种群不同生长阶段中不同粒级浮游植物种群的变化情况.结果表明,添加营养盐能有效促进浮游植物的生长,东海原甲藻围隔(M1)和自然水体围隔(M2)中浮游植物分别于第 7 天和第 4 天出现生长高峰,叶绿素 a 最大值分别为112.79 mg/m和235.60 mg/m.微型浮游植物与微微型浮游植物存在竞争,微型对微微型生长的抑制作用:M2>M1.在营养盐丰富时,硅藻的增殖速率比东海原甲藻快,达到高峰期时间短,消亡也快.硅的减少促进硅藻水华的消亡.
통과현장위격실험,모의적조발생과정,연구료충군불동생장계단중불동립급부유식물충군적변화정황.결과표명,첨가영양염능유효촉진부유식물적생장,동해원갑조위격(M1)화자연수체위격(M2)중부유식물분별우제 7 천화제 4 천출현생장고봉,협록소 a 최대치분별위112.79 mg/m화235.60 mg/m.미형부유식물여미미형부유식물존재경쟁,미형대미미형생장적억제작용:M2>M1.재영양염봉부시,규조적증식속솔비동해원갑조쾌,체도고봉기시간단,소망야쾌.규적감소촉진규조수화적소망.
A algal bloom process had been simulated via field mesocosm experiment,and the change of phytoplankton assemblage of different sizes in different growing phases had been studied.Nutrients addition could promote the growth of phytoplankton.In the mesocosm of Prorocentrum donghaiense (M1) and the mesocosm of natural waters (M2),and the peaks of chlorophyll a were 112.79 mg/m and 235.60 mg/m,respectively.The restraining effect of nano-phytoplankton on pico-phytoplankton growth was stronger in M2 than in M1.When nutrients were abundant,the relative growth rate of diatom was higher than that of P.donghaiense,and they reached the peak quickly and then came to die out very fast.The decreasing of Si promoted diatom bloom to die out.