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首页> 外文会议>Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009 >Agricultural Non-Point Nitrogen Pollution Control Function by Phragmites
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Agricultural Non-Point Nitrogen Pollution Control Function by Phragmites

机译：芦苇对农业面氮的污染控制作用

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摘要

Riparian wetland is the major transition zone of matter, energy, and information transfer between aquatic and terrestrial ecosystems and has important functions of water purification and non-point pollution control. Using the field experiment method and isotope tracing technique, the agricultural non-point nitrogen pollution control function of Phragmites communis Trin in riparian wetlands was studied in Kouma section of Yellow River. The results show that retention of agricultural non-point nitrogen pollution by riparian wetland soil occurs mainly in the top 0-10 cm soil layer, which account for 58.89% of the total nitrogen interception. Exogenous nitrogen in the 0-10 cm soil layer changes the fastest of all layers. One month after K15NO3 added to the surface soil, nitrogen content is 76.96% and after three months, nitrogen content is 92.84%. The nitrogen uptake amount of Phragmites communis Trin is 96.11 kg hm-2. Observation results indicate that riparian wetlands as buffers on and adjacent to stream banks are recommended to control agricultural non-point pollution.
机译：河岸湿地是水生生态系统和陆地生态系统之间物质，能量和信息传递的主要过渡区，具有重要的水净化和面源污染控制功能。利用野外实验方法和同位素示踪技术，在黄河口马段研究了芦苇在河岸湿地的农业面氮污染控制功能。结果表明，河岸湿地土壤对农业面源氮的保留主要发生在表层0-10 cm土层，占总氮截留量的58.89％。 0-10厘米土壤层中的外源氮变化最快。在地表土壤中添加K 15 NO 3 一个月后，氮含量为76.96％，三个月后，氮含量为92.84％。芦苇的氮吸收量为96.11 kg hm -2 。观测结果表明，建议将河岸湿地作为溪流及其附近的缓冲带，以控制农业面源污染。

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