台风对桑沟湾、爱莲湾表层海水的影响探究

Impact of Three Typhoon Events upon Surface Water of Sanggou Bay and Ailian Bay

2019年8~9月,超强台风利奇马、强台风玲玲、强台风塔巴分别过境黄海海域,影响范围均覆盖山东省荣成市周边海域。本文跟踪调查了台风影响前后桑沟湾、爱莲湾典型养殖海区的海表水文、营养盐、微生物等参数的变化,结果表明:三次台风过境均对调查海域产生显著影响,将硝酸盐平均提升了43.62%,对磷酸盐的影响不一致,将N/P比平均提升了144.73%,在短时间内加剧了磷限制现象;台风发生与叶绿素浓度呈现极显著负相关(p 【0.01),利奇马和塔巴的过境分别将水体中叶绿素的含量显著降低了47.41%、81.52%;养殖对象能够影响养殖区的水质和生物构成,台风过境后,无藻类养殖区的N/P值提升程度要高于藻类养殖区。

During August and September, 2019, three typhoons Lekima, LINGLING and TAPAH successively crossed Yellow Sea area, influencing coastal waters of Rongcheng City, Shandong Province. In this paper, the changes of hydrological parameters, nutrients, microorganisms of surface water in Sanggou Bay and Ailian bay before and after three typhoon events were investigated. The results show that three typhoon events had a significant impact on the investigated sea area, increasing the concentration of dissolved inorganic nitrogen and ratio of N/P value by 43.62%, 144.73%, respec-tively, but not the concentration of dissolved inorganic phosphate. And the phosphorus limitation is exacerbated just after typhoon. The correlation between the occurrence of typhoon events and concentration of chla was significantly negative (P