2011•Unpublished venueRequires access

Preliminary Study on Change of Chlorophyll-a Concentration and its Relationships with TN and TP in Hengshui Lake

Ding Er-feng

Abstract

Based on the conventional monitoring data in 2010,this paper,by the regression statistical method,studied the change of chlorophyll-a concentration and its relationship with total nitrogen(TN) and total phosphorus(TP) concentrations.The results indicated that the change was in accordance with the quantity change of TP,and the values were arranged as: July and AugustSeptemberOctoberJune and NovemberMay.At the same time,positive logarithmic correlation was found between chlorophyll-a and TP,and negative logarithmic correlation between chlorophyll-a and the ratio of TN to TP,but no significant correlation between chlorophyll-a and TN concentration

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Key concepts: Chlorophyll a, Chlorophyll, Logarithm, Negative correlation, Nitrogen, Correlation coefficient, Positive correlation, Regression analysis