松花江流域丰水期氮的源解析研究  

Analysis on Nitrogen Source in Songhua River Basin during High Flow Season

作　　者：王宏宇 叶匡旻 孟凡生[3] 孙宗光[4] Wang Hongyu;Ye Kuangmin;Meng Fansheng;Sun Zongguang(Heilongjiang Provincial Environmental Science Research Institute, Harbin 150056, China;Shenzhen Institute of Environmental Sciences, Shenzhen 518001, China;Chinese Research Academy of Environmental Sciences, Beijing 100012, China;China National Environmental Monitoring Center, Beijing 100012, China)

机构地区：[1]黑龙江省环境科学研究院,黑龙江哈尔滨150056 [2]深圳市环境科学研究院,广东深圳518001 [3]中国环境科学研究院,北京100012 [4]中国环境监测总站,北京100012

出　　处：《环境科学与管理》2020年第9期40-44,80,共6页Environmental Science and Management

基　　金：水体污染控制与治理科技重大专项(2015ZX07201-008,2017ZX07302-002)。

摘　　要：松花江流域是中国氮污染较为严重的流域之一,为了解松花江流域丰水期水体中氮素的主要来源,研究选取36个典型断面进行采样,测定氮氧稳定同位素,解析水体中氮污染的主要来源。结果表明利用δ15N-NO3和δ18O-NO3的值范围分别为2.07‰~14.24‰、-3.99‰~8.03‰,主要来源于含氮肥料、土壤有机氮输入、生活和粪肥污水,根据Iso source模型计算得到三类污染源的平均贡献率分别为27%,41%和32%。丰水期松花江流域需要进一步加强对含氮化肥和城市点源污水排放的管控,需重点关注干流哈尔滨段及支流伊通河-饮马河流域氮污染情况,提高预警能力和监管力度。The Songhua River Basin(SHR)is one of the basins with serious nitrogen pollution in China.In order to understand the main sources of nitrogen in the water of SHR in high flow season,36 typical sections were sampled to determine stable isotopes of nitrogen and oxygen,and the main sources of nitrogen pollution in the water were analyzed.The results show that values ofδ15N-NO3 andδ18O-NO3 range from 2.07‰~14.24‰and-3.99‰~8.03‰,respectively.They are mainly derived from nitrogen fertilizer,soil organic nitrogen input,domestic sewage and manure.According to the Iso Source model,the average contribution rates of the three sources of pollution are 27%,41%and 32%,respectively.It is necessary to further strengthen the control of nitrogen fertilizer and urban point source sewage discharge in the SHR during the high flow season,and pay attention to the nitrogen pollution in the Harbin section of the main stream and its tributaries in the Yitong River-Yinma River basin,so as to improve the early-warning ability and supervision.

关 键 词：松花江 氮素 同位素 源解析 

分 类 号：X522[环境科学与工程—环境工程]