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Analysis on the Distribution Characteristics and Correlation of the Biochemical Parameters in the Sea to the North of the Chudao Island of Weihai City, Shandong Province
Pages: 54-61
Year: Issue:  1
Journal: Ocean Technology

Keyword:  sea area to the north of the Chudao Islandmarine biochemical parameterscharacteristics of time changespatial distribution characteristicscorrelation analysis;
Abstract: According to the field data on the northern waters of the Chu Dao Island of Weihai City, Shandong Province, on July 14th, September 1 stand September 3rd 2017, this paper analyzes the spatial-temporal variations and correlation of Chlorophyll-a(Chl-a), Chemical Oxygen Demand(CODmn), Dissolved Oxygen(DO) and Hydrogen Ion Concentration(p H). The results show the following facts.(1) In the three groups of measurements,on July 14 th, the concentrations of Chl-a and CODmn in the whole sea area were at low levels, DO and p H were at high levels, of which in no. 6 site DO reached 9.08 mg/L and p H was 8.10. On September 1st, the concentration of Chl-a and CODmn in the whole test area was high, the chlorophyll concentration at no. 12 sites reached 5.04 mg/m3 and CODmn reached 0.755 mg/L. The p H and DO were in a low level. In terms of observed values of September 3rd, the Chl-a and CODmn values were close to those on July 14th, and the p H and DO values were similar to those on September 1st.(2) From the spatial perspective, the high value areas of Chl-a,CODmn and p H have single peak and bimodal pattern in the whole test sea area; and the high value area of DO was basically unimodal.(3) There was no significant correlation between Chl-a and CODmn, DO and p H. The value of CODmn was significantly correlated with that of DO, but not significantly with p H. There was a significant correlation between DO and p H. The dataset of field observation shows that the relationships between these biochemical parameters were very complex.
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