CAJ | 학술논문

2008年4月3日08:00-4日08:00在三峡水库香溪河库湾5个监测点对拟多甲藻(Peridiniopsis sp.)进行了24 h连续监测,以研究拟多甲藻的昼夜垂直迁移特性,并解释拟多甲藻水华表层水体表观颜色昼夜变化的原因.结果表明:拟多甲藻在12 m水深以上水柱中存在明显的周期性昼夜垂直迁移特性,00:00-16:00拟多甲藻向表层水体迁移并聚集,最大上移速度约为2 m/h;16:00-00:00拟多甲藻向下部水体迁移,最大下移速度约为4 m/h;拟多甲藻的昼夜垂直迁移是导致拟多甲藻水华表层水体表观颜色不断变化的主要原因.水体中各层叶绿素a质量浓度[ρ(Chla)]昼夜变化较大,用单层ρ(Chla)不足以评价藻类水华暴发程度;均深叶绿素a质量浓度[ρ(A.D.Chla)]的昼夜变化不大,能够综合表征藻类迁移水柱中藻类的现存量,可以作为河道型水库拟多甲藻水华暴发程度的评价指标.
2008년4월3일08:00-4일08:00재삼협수고향계하고만5개감측점대의다갑조(Peridiniopsis sp.)진행료24 h련속감측,이연구의다갑조적주야수직천이특성,병해석의다갑조수화표층수체표관안색주야변화적원인.결과표명:의다갑조재12 m수심이상수주중존재명현적주기성주야수직천이특성,00:00-16:00의다갑조향표층수체천이병취집,최대상이속도약위2 m/h;16:00-00:00의다갑조향하부수체천이,최대하이속도약위4 m/h;의다갑조적주야수직천이시도치의다갑조수화표층수체표관안색불단변화적주요원인.수체중각층협록소a질량농도[ρ(Chla)]주야변화교대,용단층ρ(Chla)불족이평개조류수화폭발정도;균심협록소a질량농도[ρ(A.D.Chla)]적주야변화불대,능구종합표정조류천이수주중조류적현존량,가이작위하도형수고의다갑조수화폭발정도적평개지표.
To study the diurnal vertical migration of Peridiniopsis sp., continuous monitoring (time interval on the order of an hour) was conducted at five profiles in the Xiangxi Bay of the Three Gorges Reservoir from 08:00 April 3~(rd) to 08:00 April 4~(th) in 2008.The causes of diel variation of apparent color of surface water containing Peridiniopsis sp.Bloom were attempted to explain.The vertical distribution of Peridiniopsis sp.Biomass changed regularly throughout day and night within the upper 12 m.Peridiniopsis sp.Rose and accumulated to the surface water with the highest speed of approximately 2m/h between 00:00 and 16:00, and sank between 16:00 and 00:00 with the highest speed of color of surface water containing Peridiniopsis sp.Bloom.The biomass of Chla in a certain layer changed too much over day and night to evaluate the extent of the algal bloom.The A.D.Chla mass concentration at different depths was suggested to judge the degree of an algae bloom, because it changed little in 24 h and indicated algae standing crops in algae migration water column.