【摘要】 根据已建立的ＮＨ_３－Ｎ、ＮＯ_２^－－Ｎ、ＮＯ_３^－－Ｎ基本水质数据库，对京杭大运河（杭州段）三氮的水质现状和趋势作了分析，结果表明，工业废水与生活污水是河水中ＮＨ_３－Ｎ升高的主要原因，ＮＯ_２^－－Ｎ和ＮＯ_３^－－Ｎ与硝化反应有关，不同水期对三氮都有影响。更多还原

【Abstract】 Based on the erected NH₃^--N,NO₂^--N and NO₃^--N water quality data bank,the water phase and changing trend of three nitrogen compounds （NH₃-N,NO₂^--N and NO₃^--N）in the Grand River Hangzhou Section （from Sanbao Ship Lock to Tangxi Bridge）were analyzed.The results showed that industrial wastewater and life sewage were the major factors which enhanced NH₃^--N pollution.The concentration of NO₂^--N and NO₃^--N in the river was connected with nitrification and three nitrogen compounds in the river were impacted by different water season.更多还原