| 赤水河不同水期氮元素存在形态——从五马河入河口至合马镇段 |
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| 引用本文： | 王海鹤.赤水河不同水期氮元素存在形态——从五马河入河口至合马镇段[J].环保科技,2013(5):28-31. |
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| 作者姓名： | 王海鹤 |
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| 作者单位： | 贵州省环境监测中心站,贵阳550081 |
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| 摘 要： | 采样分析了不同水期赤水河从五马河入河口到合马镇段水体中的氮素,结果表明:该河段水体中氮素的主要存在形态为硝基氮和有机氮,分别占总氮的72%和24.4%;丰水期有机氮含量少于枯水期,是因为丰水期水体中部分有机氮氧化为硝基氮;研究河段水体中硝基氮和总氮含量排序均为丰水期>枯水期>平水期,且变化趋势相似;该河段总氮含量主要取决于硝基氮的变化,水中氮素的控制应以控制硝基氮为主。
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| 关 键 词： | 赤水河 氮素 |
Distribution characteristics of different forms of N in the Chishui River from Wuma River to Hema Township Section |
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| Authors: | Wang Haihe |
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| Institution: | Wang Haihe ( Guizhou Environment Monitoring Centre, Guizhou, Guiyang, 550081 ) |
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| Abstract: | nitrogen in different forms was measured for midstream of Chishui River, from Wuma Riv- er to Hema Township section. The result showed that nitrogen was mainly made up by two species： NO3- -N accounting for 72% and Org- N 24.4%. In wet season, part of Org- N was oxidized into NO3- - N, so that level of Org - N in wet Season was higher than in dry season. NO3- - N and TN had the similar temporal distribution （Cwel 〉 C normal 〉 Cdry） and change trend. Level of TN largely de- pended on NO3- - N, so the control for nitrogen should focus on the NO3- - N. |
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| Keywords: | Chishui River nitrogen |
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