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中文摘要：
在淹水条件下，采用连续培养法研究了后海沉积物（HH）、环科院沉积物（HK）和土壤（TR）的氮素矿化过程。结果表明：三个处理矿化趋势基本相同，都是培养前期矿化量迅速升高并达到峰值，之后逐渐降低，最后回到培养前的氨氮含量水平。两种沉积物的矿化高峰出现时间在培养的第4天，要早于TR的第7天；污染严重HH的矿化最大累积量远大于污染较轻的HK和TR。培养过程中各处理各层次有机质、总氮和固定态铵含量都表现为降低趋势。说明培养过程中，开始占主导地位的氮化微生物被其它土壤微生物所代替，这些微生物大量繁殖，生物固持作用逐渐强于矿化作用，造成矿化氮和固定态铵含量迅速下降。
英文摘要：
Under waterlogged incubation conditions, the nitrogen mineralization of two different sediments （HH and HK） and a general soil （TR） were investigated with the method of the continuous incubation. The results indicated that the mineralization trend was basically uniform. The N mineralization quantity increased promptly to its peak value after 11 incubation days, and then derceased gradually to the initiative levels. The peak of nitrogen mineralization of HH and HK sediments appeared earlier than that of TR. The peak of ammonium in the N mineralzation process of HH and HK appeared after 4 days of incubation, but the TR occurred after 7 day. The contents of organic matter, the total nitrogen and the fixed ammonium during the process of incubation were declineing. It indicated that the aminate microorganisms were replaced by others, and the microbe propagated largely. Then the microbial immobilization function was gradually stronger than N mineralization, as a result of the quantity of the mineralization N and the fixed ammonium was declining promptly.
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