The research indicates that the modern sediment is divided three layers: polluted layer,transition zone and unpolluted layer.Just the pollute layer cause Dianchi Lake environmental pollution.

• 研究结果表明：滇池现代沉积物主要分为三层，污染层、过渡层和未污染的湖泊沉积层，其中污染层是对滇池环境污染造成影响的层位；