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Denitrification-dependent anammox activity in a permanently flooded fallow ravine paddy field

文献类型： 外文期刊

作者： Zhou, Sheng 1 ; Borjigin, Sodbilig 2 ; Riya, Shohei 2 ; Hosomi, Masaaki 2 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, 1000 Jinqi Rd, Shanghai 201403, Peoples R China

2.Tokyo Univ Agr & Technol, Inst Engn, 2-24-16 Naka Cho, Koganei, Tokyo 1848588, Japan

3.Inner Mongolia Tech Luck Environm Prod & Energy S, Hohhot 010070, Peoples R China

关键词： Anammox;Chlorate;Denitrification;Nitrate;Nitrite;Paddy soil

期刊名称：ECOLOGICAL ENGINEERING （ 影响因子：4.035； 五年影响因子：4.611 ）

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收录情况： SCI

摘要： It is vital to understand the nitrogen dynamics in ravine paddy fields due to their nitrogen removal capacity, providing a potential method for non-point source pollution treatment. This study measured bacterial anaerobic ammonium oxidation (anammox) and denitrification activity using a nitrogen isotope pairing technique (IPT) in fallow ravine paddy soil that is permanently flooded with seepage water from an upland vegetable field. The inhibition experiment explored the correlation between anammox activity and the denitrification processes, using chlorate to inhibit the first step of denitrification. Denitrification activity decreased with increasing paddy soil depth; with anammox activity showing a similar trend, but with even greater declines in activity. In addition, when nitrate reduction to nitrite was inhibited, anammox activity exponentially decreased, likely to be due to a reduction in the intermediate NO2-. Furthermore, the rate of reduction in anammox activity was significantly greater than the reduction in denitrification. This study presents the first direct exploration of the correlation of denitrification with anammox activity in ravine paddy fields receiving nitrate polluted water. (C) 2016 Elsevier B.V. All rights reserved.

  • 相关文献

[1]The relationship between anammox and denitrification in the sediment of an inland river. Zhou, Sheng,Zhou, Sheng,Borjigin, Sodbilig,Riya, Shohei,Terada, Akihiko,Hosomi, Masaaki.

[2]Assessing nitrification and denitrification in a paddy soil with different water dynamics and applied liquid cattle waste using the N-15 isotopic technique. Zhou, Sheng,Terada, Akihiko,Hosomi, Masaaki,Zhou, Sheng,Song, Xiangfu,Sakiyama, Yukina,Riya, Shohei. 2012

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