中文摘要：

水库运行多年后,沉积物污染逐渐成为影响水库生态环境的重要因素。研究沉积物结构特征和沉积物污染特性是掌握水库淤积过程,防治水库内源污染的基础。通过对典型水库沉积物进行调查发现沉积物实际上是由外源性的污染输入形成,且多数处于静止水体,多年累积下具有明显的层理性和时序性特征。采用凯氏定氮法对沉积物中总氮含量进行分析,碧流河水库沉积物中总氮含量较高,在1153―3320mg/kg之间,从建库以来呈增加趋势,增加了水体污染的风险。

英文摘要：

After years of reservoir operation, sediment pollution has become an important factor influencing the ecological environment of the reservoir.Study on sediment structure and sediment pollution characteristics is the basis of understanding the reservoir sedimentation process and and controlling the internal pollution.Based on the investigation of typical reservoir sediment,it is found that the sediment is formed by the input of exogenous pollution,mostly deposits in the static water and has the bedding and timing characteristics during many years＇ accumulation.The total nitrogen content of Biliuhe reservoir sediments were analyzed by Kjeldahl method and the content ranged from 1153~3320mg/kg,were relatively high in risk of internal water pollution.