杭州典型区域秋冬季大气活性氮湿沉降特征研究  

Study on wet deposition characteristics of atmospheric active nitrogen in autumn and winter in typical areas of Hangzhou

作　　者：仇丰 李斯豪 郭莉 谢向前 QIU Feng;LI Sihao;GUO Li;XIE Xiangqian(PowerChina Huadong Engineering Co.,Ltd.,Hangzhou Zhejiang 311122;Zhejiang Hengda Instrumentation Co.,Ltd.,Hangzhou Zhejiang 310030)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [2]浙江恒达仪器仪表股份有限公司,浙江杭州310030

出　　处：《环境污染与防治》2023年第11期1562-1565,共4页Environmental Pollution & Control

基　　金：中国电建集团华东勘测设计研究院有限公司科技项目(No.KY2018-HS-14)。

摘　　要：大气活性氮湿沉降对生态系统的影响与日俱增,尤其是在秋冬季。在杭州主城区、中心绿地、农田、水体4类典型区域开展了秋冬季大气活性氮(包括氨态氮、硝态氮、有机氮)湿沉降特征研究。结果表明,杭州市典型区域降水中氨态氮、硝态氮、有机氮质量浓度平均值分别为1.85、1.38、2.78 mg/L,有机氮的浓度最高,冬季一般高于秋季;氨态氮和硝态氮质量浓度比大于1,表明杭州市秋冬季大气活性氮湿沉降主要来源于农业活动。有机氮、氨态氮、硝态氮与降水量存在显著指数负相关关系(p<0.05)。主城区湿沉降中各类活性氮浓度处于最高水平。The impact of atmospheric active nitrogen wet deposition on ecosystems is increasing day by day,particularly in autumn and winter.The wet deposition characteristics of atmospheric active nitrogen(ammonia nitrogen,nitrate nitrogen and organic nitrogen)in autumn and winter were studied in 4 typical areas of Hangzhou,namely,main urban area,central green space,farmland and water body.Results showed that the average mass concentrations of ammonia nitrogen,nitrate nitrogen,and organic nitrogen in typical areas of Hangzhou were 1.85,1.38 and 2.78 mg/L,respectively.The highest concentration was organic nitrogen.And the nitrogen was usually higher in winter than that in autumn.Mass concentration ratio of ammonia nitrogen and nitrate nitrogen was higher than 1,indicating that agricultural sources contributed more to the wet deposition of atmospheric active nitrogen in autumn and winter in Hangzhou.The concentration of organic nitrogen,ammonia nitrogen and nitrate nitrogen all had a significant exponential negative correlation with rainfall(p<0.05).The emission level of active nitrogen was the highest in main urban area in the view of space.

关 键 词：大气湿沉降 活性氮 杭州 人为活动 

分 类 号：X51[环境科学与工程—环境工程]