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- W2763015955 abstract "利用芦苇湿地去除农业污水中的氮是博斯腾湖流域控制富营养化的重要手段.但是,污水中的盐分往往会抑制芦苇(Phragmites australis)湿地的除氮效果.为了探索不同盐度对芦苇湿地脱氮效果的影响和机制,研究4个不同的盐度梯度(淡水、2‰、5‰和10‰)对芦苇表流湿地中氮去除的影响,测定不同盐度下湿地表层(0~10.0 cm)和下层土壤(10.0~20.0 cm)中硝化、反硝化作用强度的变化.结果表明,盐度上升显著降低了湿地氮的去除率,但是不同离子形态的氮变化趋势并不一致.5‰和10‰盐度下的芦苇湿地中总氮、铵态氮去除率分别下降了9.03%、31.80%和23.10%、39.20%,亚硝态氮累积率分别上升了190%、690%,而硝态氮并未发生明显变化.相对于参与反硝化作用的菌群,盐度对参与硝化作用菌群的抑制作用更强是产生此现象的主要原因.除此之外,盐度升高导致植物根系泌氧减少也是土壤中的硝化作用强度降低的重要原因之一." @default.
- W2763015955 created "2017-10-20" @default.
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- W2763015955 date "2017-01-01" @default.
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- W2763015955 title "Effect of salinity on nitrogen removal performance in a <i>Phragmites australis</i> constructed surface flow wetland" @default.
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- W2763015955 doi "https://doi.org/10.18307/2017.0607" @default.
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