The impact on geochemical factors of sediment in Jincheng artificial reef area of Laizhou Bay

Abstract:

Sediment samples in the artificial reefs of Laizhou Bay were collected in March , May, July and November from 2010 to 2012 years. Total nitrogen (TN), total phosphorus (TP), total organic carbon (TOC) and sulfide were measured. The results showed that the type of sediment did not change, but there was an increase in sediment grain size, the medium diameter and the average particle diameter size changed from (0.156 ± 0.084) mm and (0.157 ± 0.076) mm to (0.160 ± 0.079) mm and (0.162 ± 0.092) mm in July 2009 and July 2010. The medium diameter and the average particle diameter size of sediment samples in artificial reef areas were higher than the samples in control areas. The other elements in sediment in July from 2009 to 2011 had such a trend: the average of content of TN, TOC and sulfide had the highest content in 2009, and the lowest content in 2011 in artificial reef area, the average content of TP had the highest content in 2010, and the lowest content in 2009; while in control area, the average content of TN and TOC had a trend of decreasing in 2010 and then increasing in 2011, the average content of TP and sulfides had a trend of increasing from 2009 to 2011. The average content of TP in artificial reef area was higher in 2011 than 2010, and the contents of other elements were higher in 2010 than 2011. In control area, the average content of TOC was higher in 2010 than 2011, the average content of other elements were higher in 2011 than 2010; The average content of TP and sulfide were higher in artificial reef area than that in control area, the average content of TN and TOC had an opposite variation trend in control area.