【摘要】 根据2011年5-7月对秦皇岛附近海域夜光藻及相关环境因子的调查结果,采用灰关联度分析方法,以各调查站位夜光藻的密度(ind/L)X0={x0(k)︱k=1,2…,24}为参考序列,以溶解无机氮DIN(NO2-N、NH4-N、NO3-N)、磷酸盐(PO4-P)、硅酸盐(SiO2-Si)、叶绿素(Chl-a)、COD、BOD5、石油烃、水温、盐度、透明度、pH、浮游植物丰度、浮游植物密度等Xi={xi(k|k=1,2…,24;i=1,2…,16)}为比较序列,对秦皇岛近岸海域理化因子和夜光藻密度的相关性进行了分析。结果表明,5-7月期间,秦皇岛近岸海域浮游植物分布密度、COD和海水温度是影响夜光藻种群数量变动的主要因子,这些环境因子在监测和预报秦皇岛海域夜光藻赤潮时应作为主要指标予以关注。更多还原

【Abstract】 The method of grey relationship analysis was used to study the relationships between Noctiluca scintillans density and eight environmental factors in Qinhuangdao coastal area,with the Noctiluca scintillans density( ind / L) of different investigation stations as reference sequence( X0= { x0(k)︱k =1,2,…,24}),with inorganic nitrogen(mg/L),labile phosphate(mg/L),silicate(mg/L), COD( mg / L),BOD5,temperature(℃),salinity,pH,the phytoplankton ect as collating sequence( Xi = { xi(k)︱k =1,2…,24,i =1,2,…,16}). The results showed that from May to July,the phytoplankton,COD,and temperature had more influence on the density of N. scintillans than any other factors.更多还原