Grey Analysis of Red Tide Produced by Superior Alga in Dapengwan Bay,South China Sea
大鹏湾优势藻引发赤潮的灰分析

Based on samples taken from the seawter of the salt field in Dapengwan Bay from March 30th to June 25th,1990,the systematic analytical method of grey theory is used to study and calculate grey related values between three major kinds of red tide phytoplankon (Pseudonitzachia pungens,Skeletonema costatum,and Prorocentrum sigmoides)separately and 12 various related physical-chemical factors of seawater in Dapengwan Bay.The result of related value and its permutation indicates that Zooplankton,Turbidity,Fe,Mn,Dissolved Oxygen,pH,Salinity and Temperature have more influence on the above three kinds of alga than other factors.Therefore,these eigth factors become superiorly influential factors of red tide.