Nitrogen Pollution of Streams in Wuyishan National Key Scenic Area

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.