通过对滇池底泥118个样品的有机质含量分析统计和利用GIS绘制的底泥0~5cm,5~10cm,10~20 cm 3层有机质空间分布图,得出底泥中有机质含量的一般范围在40.00~90.00g/kg。滇池草海底泥中有机质含量明显大于外海含量;外海有机质垂直分布呈明显规律性-随着深度的增加而递减,而草海的有机质垂直分布没有明显的规律;并分析了滇池底泥中有机质含量的环境意义,为治理滇池提供理论指导。

Through organic matter analysis of about 118 samples of sediment from the Dianchi Lake, it was found out that the content of organic matter ranged from 40.00g/kg to 90.00g/kg. Based the charts of 0~5cm, 5~10cm and 10~20cm sediment layers with GIS, it could be inferred that the organic matter content of Caohai was evidently higher than that in Waihai; the organic matter content of Waihai declined with the depth. A further explanation will be explored of the relationship between organic matter content and environment. The findings of the research will serve as basic reference for pollution control in the Dianchi Lake.

中国科学院南京土壤研究所知识创新项目(编号:5022505)、973项目(G 1999011805)资助。