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１９９７ 年７ 月份（ 汛期） 和１１ 月份（ 平水期） 对北江河口站和西江马口站水体有机碳含量进行了两次采样分析。结果表明：两江水体的颗粒有机碳含量在不同季节均高于溶解有机碳含量（ 本文用近似值ＤＯＣ＋ 代替ＤＯＣ） ，这与全球河流以溶解有机碳为主的平均格局显著不同。溶解有机碳、颗粒有机碳含量以及总有机碳含量均随水文季节的变化而变化，汛期含量高于平水期。悬浮物中有机碳的含量随悬浮物含量的增加，也即流域土壤机械侵蚀强度的加强而降低，这种现象与全球河流的总体趋势一致。汛期水体颗粒物中自源有机碳的贡献量高于平水期。
In July 1997 (flood season) and November (flat water period), the organic carbon content of Beijianghekou Station and Xijiangmakou Station were sampled and analyzed twice. The results showed that the particulate organic carbon content in both rivers was higher than that of dissolved organic carbon in different seasons (DOC was used in place of DOC in this paper), which was significantly different from the average dissolved organic carbon in global rivers. Dissolved organic carbon, particulate organic carbon content and total organic carbon content all changed with the change of hydrological season, and the content in flood season was higher than that in flat water. The content of organic carbon in suspended solids decreases with the increase of suspended matter content, that is, the intensity of mechanical erosion in the watershed increases. This phenomenon is consistent with the general trend of global rivers. The contribution of organic carbon from water bodies in flood season was higher than that of flat water.