武夷山风景区溪流水体中氮素污染特征分析

摘要

为了解武夷山风景区溪流污染状况,2008～2009年间对武夷山风景区溪流水体中TN、NH3-N、NO-3 -N和NO-2 -N含量进行了连续监测,分析该流域溪流水体中氮素含量的变化特征.结果表明,景区溪流水体中氮素污染存在季节变化特征,NH3-N丰水期和枯水期均高于年平均值,NO-3 -N丰水期低于年平均值,枯水期高于年平均值.崇阳溪、黄柏溪TN、NO-3 -N污染较重；除NH3-N较高外,下梅溪各氮素污染均较轻;九曲溪各氮素污染较轻.%Nitrogen pollution of streams in Wuyishan National key scenic area was studied. Variations on TN,NH3-N, NO3--N and NO2--N were analyzed through continuous monitoring between 2008 and 2009. The results showed that the nitrogen pollution varied with the season. The concentration of NH3-N in either the flood or dry season was higher than the annual mean. That of NO3--N in the dry season was also higher than the annual mean. But that in the flood season was lower than the annual mean. Among the streams, the TN and NO3--N pollution in Chongyangxi Stream and Huangboxi Stream were more severe than in Jiuquxi Stream. The nitrogen pollution levels, except NH3-N, in Xiamei Stream were low.