The Feasibility Study On AOI And PH Application For Red Tide Pre-warning In Xiamen Inner Red Tide-prone Areas

This study carried out AOI indicators and pH indicators as pre-warning of red tide. According to experiments and research results, and evaluation of red tide pre-warning indicators of value, pre-warning of red tide which AOI value 0.5 mg/dm3, the critical value of red tide 1.5 mg/dm3, red tide determined value of 2.0 mg/dm3. pH value of 8.16 pre-warning of red tide, red tide in the critical value of 8.26, determine the value of 8.32 of red tide. Strength of this study is divided into three levels of red tide, that is mild, moderate and severe, AOI evaluation criteria when red tide mild intensity2.0mg/dm3-5.0 mg/dm3, moderate intensity of red tide when 5.0 mg/dm3-10.0 mg/dm3, severe intensity of red tide when>10 mg/dm3. pH evaluation criteria when red tide strength of 8.16-8.60 mild, moderate intensity when red tide 8.60-9.14, when red tide and severe intensity> 9.14.