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- W2334454901 abstract "浮萍是稻田中常见的漂浮在水面的水生植物, 具有固氮作用。但是, 浮萍对稻田温室气体排放的影响尚不明确。以位于湿润亚热带的福州平原稻田为研究对象, 探讨浮萍对该区域稻田CH<sub>4</sub>和N<sub>2</sub>O排放的影响, 为科学评价、准确编制我国水稻田温室气体排放清单提供基础数据。研究结果表明, 观测期内, 有萍小区和无萍小区CH<sub>4</sub>排放范围分别为0.19~26.50 mg·m<sup>-2</sup>·h<sup>-1</sup>和1.02~28.02 mg?m?<sup>-2</sup>·h<sup>-1</sup>, 平均值分别为9.28 mg?m<sup>-2</sup>·h<sup>-1</sup>和11.66 mg?m<sup>-2</sup>·h<sup>-1</sup>, 有萍小区CH<sub>4</sub>排放低于无萍小区(<i>P</i><0.01), 有萍小区CH<sub>4</sub>排放高峰比无萍小区约提前1周, 高峰期后排放迅速降低; 有萍小区和无萍小区N<sub>2</sub>O排放范围分别为?50.11~201.82 μg?m<sup>-2</sup>·h<sup>-1</sup>和?28.93~54.42 μg?m<sup>-2</sup>·h<sup>-1</sup>, 平均值分别为40.29 μg?m<sup>-2</sup>·h<sup>-1</sup>和11.93 μg?m<sup>-2</sup>·h<sup>-1</sup>, 有萍小区N<sub>2</sub>O排放高于无萍小区(<i>P</i><0.05)。稻田排干后, N<sub>2</sub>O排放迅速上升, 2个小区N2O排放呈现出相似的规律。有萍小区和无萍小区的CH<sub>4</sub>与N<sub>2</sub>O排放的影响因子有所不同。综合考虑CH</sub>4</sub>和N<sub>2</sub>O两种温室气体, CH<sub>4</sub>仍是稻田温室效应产生的主要贡献者, 浮萍可降低位于沿海区域的福州平原稻田综合温室效应的17.3 %。" @default.
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- W2334454901 date "2012-12-07" @default.
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- W2334454901 title "Effect of azolla on CH<SUB>4</SUB> and N<SUB>2</SUB>O emissions in Fuzhou Plain paddy fields" @default.
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- W2334454901 doi "https://doi.org/10.3724/sp.j.1011.2012.00723" @default.
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