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采用现场调查、社会调查和卫星遥感多种手段相结合,调查了南黄海绿潮早期零星漂浮到大面积暴发的时空变化过程,分析了紫菜养殖工艺对绿潮暴发的影响,估算了南黄海不同紫菜养殖区输入海洋的绿潮藻初始生物量,并探讨了主要海域紫菜养殖面积的增长与绿潮暴发的关系。结果表明,受紫菜养殖生产工艺的影响,数以千吨的绿潮藻在短期内被刮落集中输入至海洋,为绿潮的暴发提供了最为直接和充足的绿潮藻初始生物量,其主要来源为竹根沙、蒋家沙和东沙紫菜养殖区。2005年以来,上述3个养殖区的紫菜养殖面积持续扩大,是2007年以来南黄海绿潮持续暴发的主要原因。水温是影响绿潮形成的关键环境因素,4~6月份大量被刮落入海的绿潮藻在适宜环境条件下漂浮和快速生长,并最终形成绿潮。
Using the methods of field survey, social investigation and satellite remote sensing, the temporal and spatial changes of sporadic floating to large-scale outbreak in the southern Yellow Sea were investigated. The effects of the culture of seaweed on the outbreak of green tide were analyzed. The seaweed initial biomass was input into the seaweed farming area, and the relationship between the growth of seaweed farming area and the outbreak of green tide was discussed. The results showed that, due to the influence of seaweed farming process, thousands of tons of green algae were scraped and concentrated into the ocean in the short term, providing the most direct and sufficient green algae initial biomass for the outbreak of green tide. The main source of bamboo root sand, Jiang Sha and Dongsha seaweed farming area. Since 2005, the laver breeding area in the above three aquaculture areas has been continuously expanding, which is the main reason for the continuous outbreak of the South Yellow Sea green tide since 2007. Water temperature is a key environmental factor that affects the formation of green tide. During the period from April to June, a large number of green tide algae scooped into the sea floated and rapidly grew under suitable environmental conditions and eventually formed a green tide.