Sources and fate of nitrate in the Haicheng River basin in Northeast China using stable isotopes of nitrate

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• 作者：Hongmei Bu^a ; ^{buhm2004@163.com} ; Xianfang Song^a ; Yuan Zhang^b ; ^c ; ^{zhangyuan@craes.org.cn} ; Wei Meng^b ; ^c
• 关键词：Nitrate nitrogen ; Nitrogen isotope of nitrate ; Oxygen isotope of nitrate ; Nitrate sources ; Nitrification ; Denitrification
• 刊名：Ecological Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：98
• 期：Complete
• 页码：105-113
• 全文大小：1968 K
• 卷排序：98

文摘

The NO3-N concentrations in riverine water showed significant seasonal variations. The NO3-N was ascribed to sewage in spring by δ15N-NO3 and Cl− variations. The NO3-N was induced by nitrification from synthetic fertilizers in early summer. The NO3-N in late summer and autumn was from soil organic matter or sewage/manure. Denitrification and nitrification processes controlled the river NO3-N contents.