THE RELATIONSHIPS BETWEEN CHLOROPHYLL-b CONCENTRATION AND RELATED ENVIRONMENTAL FACTORS OF SEAWATER IN DAPENG BAY BASED ON GREY MODEL RELATIVE ANALYSIS
运用灰关联模型分析大鹏湾叶绿素-b与海水理化因子的关系

The systematic analytical method of grey theory was used to study the relationships between chlorophyll-b and 10 environmental factors (temperature, plankton biomass, salinity, dissolved oxygen (Do), pH, phosphate, nitrate, nitrite, Fe, and Mn) in seawater. Samples were collected from Dapeng Bay of the South China Sea, near Yan-tian area of the Shenzhen City. The resulting grey relative values and their permutation indicated that nitrate, phosphate, nitrite and pH had more influence on the chlorophyll-b concentration in seawater than any other factors. A grey model {GM (l, n)} was established to relate chlorophyll-b concentration with four factors among the ten.