Nitrate sources and nitrogen biogeochemical processes in the Feng River in West China inferred from the nitrogen and oxygen dual isotope measurements of nitrate
Nitrate sources and nitrogen biogeochemical processes in the Feng River in West China inferred from the nitrogen and oxygen dual isotope measurements of nitrate
复制标题
从硝酸盐氮氧双同位素测量推断中国西部沣河硝酸盐来源和氮生物地球化学过程
DOI：
10.1080/19443994.2015.1021845
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发表时间：
2016-04
影响因子：
1.1
通讯作者：
Zhang Shurong
中科院分区：
文献类型：
--
作者：
Zhi Jianhui;Ding Aizhong;Zhang Shurong
摘要流域氮素的一部分进入河网，使河流水质恶化，并引起下游河流的富营养化。确定河流中硝酸盐的来源是控制过量氮输入河流的主要方法。本文利用硝酸盐双同位素（δ 15 Nnitrate和δ 18 Onitrate）结合水质资料推断了丰河中硝酸盐的来源，并进一步探讨了氮素的生态地球化学过程。结果表明，丰河水系中氮的主要形态为-N。硝酸盐的年平均含量为3.21 mg/L，约占总氮含量的83%。2012年9月的δ 15 N硝态氮和δ 18 O硝态氮值表明，上游地区硝态氮主要来源于大气沉降和土壤有机氮，下游地区硝态氮主要来源于大气沉降、化肥、污水和粪便输入。
AbstractA portion of the nitrogen from watersheds entering river networks, which degrades river water quality and causes subsequent eutrophication of the downstream river. Identifying the source of nitrate in rivers is the primary method of controlling excessive nitrogen input into rivers. In this paper, nitrate sources in the Feng River were inferred from nitrate dual isotopes (δ15Nnitrate and δ18Onitrate) combined with the water quality data, and nitrogen biogeochemical processes were further explored. The results indicated that -N is the dominant form of nitrogen in the Feng River system. The annual average content of nitrate was 3.21 mg/L, representing approximately 83% of the total nitrogen content. In September of 2012, the δ15Nnitrate and δ18Onitrate values suggested that the atmospheric deposition and soil organic nitrogen were the main sources of nitrate in the upstream region, and that the atmospheric deposition, chemical fertilizers, sewage, and manure inputs were the sources in the downstream ...
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影响因子：
4.4
作者：
Benkovitz, CM;Scholtz, MT;Graedel, TE
通讯作者：
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影响因子：
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影响因子：
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通讯作者：
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