本文描述了长江口区沉积物中硫化细菌和硫酸盐还原细菌的数量分布特点。它们在表层沉积物中的数量分别是10~3—10~5个/克泥和10~3—10~4个/克泥,在沉积物中的垂直分布规律是表层数量最高,随沉积物深度的增加其数量减少。沉积物中硫化细菌的垂直分布与间隙水中SO_4~(2-)的垂直分布密切相关。图3、表1,参考文献5。 This paper describes the quantitative distribution of sulfide bacteria and sulfate-reducing bacteria in the sediments of the Yangtze River Estuary. Their surface sediments in the number of 10 ~ 3-10 ~ 5 / g mud and 10 ~ 3-10 ~ 4 / g mud, the vertical distribution of the sediment is the highest number of surface layer, with the sediment Depth of increase in the number of its decrease. The vertical distribution of sulfide bacteria in sediments is closely related to the vertical distribution of SO 4 2- in the interstitial water. Figure 3, Table 1, Reference 5.