浙江-闽北陆架沉积物硫酸盐还原菌及与生物地球化学因子关系的分析

采用ＭＰＮ法测定浙江－闽北陆架沉积物的硫酸盐还原菌（ＳＲＢ），结果表明，在表层其出现率和平均含量各为８４．２％和４３６．８个（细胞／ｇ（湿重）），浅层则各为４２．４％和１６４个／ｇ，近岸的南区表层和浅层沉积物ＳＲＢ出现率、平均含量分别为９３．０％、５７６个／ｇ和３３．３％、２６７个／ｇ；远岸的北区则分别为７５．０％、３０２个／ｇ和５３．３％、４１个／ｇ，分析了ＳＲＢ含量与相应样品中硫化物、有机质含

Sulphate reducing bacteria relationship between them and bilogeochemical agents in ZhejiangNorth Fujian shelf

The SRB content in the sediment of the Zhejiang\|North Fujian continental shelf was determined using the method of MPN. The results indicated that: the percentage of occurrence and average content of SRB in the surface sediment surveyed were 84.2% and 436 cell/g wet sediment (the same below) respectively, and in the shallow layer of the sediment were 42.4% and 164 cell/g respectively. As to the distribution state of SRB contents, it was discovered that the percentage of occurrence and average content of SRB in the surface sediment sureveyed in the inshore area were 75.0% and 302 cell/g, and in the offshorearea were 53.3% and 41 cell/g respectively. Enquiring was made as to the significance of SRB contents and their distribution condition to the extent of corrosiveness of the enviromment surveyed. An anlysis of the corrclation bctween the SRB content and the contents of sulphide, organic matter, Fe\ \{3 \}/Fe\ \{2 \},pH, E h and electric\|resistivity respectively revealed that: there were mainly some positive correlations among them, especially there were very significant positive correlations between SRB content and E h, Fe\ \{3 \}/Fe\ \{2 \} respectively. But a negative correlation was found between SRB content and electric resistivity. The seven biogeochemical parameters including SRB condition etc. have provided important information for correctly assessing the phenomenon of environmental corrosiveness in the area surveyed.