对竺山湖及太湖西岸湖区底泥沉积物的粒径、含水率、有机质、TN,TP含量进行研究,探讨竺山湖湾东部、竺山湖湾西部、太湖西岸北部、太湖西岸南部底泥污染物表层及垂向分布规律.结果表明,竺山湖湾沉积物中有机质、TN,TP含量高于西沿岸湖区,底泥再悬浮释放污染物风险较大;西沿岸北段清淤区垂向有机质、TN含量无显著性变化,TP含量呈现表层高、下层低的趋势,为太湖重污染湖区制定清淤方案提供了依据.%The characteristics of bottom sediment, including particle size, moisture content, organic matter, total nitrogen (TN), total phosphorus (TP), in the Zhushan Lake and the west bank area of the Taihu Lake were studied.The surface and vertical distributions of bottom sediment contaminant in the west of the Zhushan Lake, northern west bank of the Taihu Lake, and southern west bank of the Taihu Lake were discussed. The results show that the contents of organic matter, TN, TP in the sediments of the Zhushan Lake are more than that in the sediments of the west bank area of the Taihu Lake, which lead to high pollutant release from sediment re-suspension. The contents of vertical organic matter and TN in the sediment of the northern section of the west bank which was dredged show no significant change,while TP content shows a descending trend from surface to bottom. This study provides a basis for the dredging of the heavily polluted area of the Taihu Lake.
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