期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：199
期号：2
页码：022016
DOI：10.1088/1755-1315/199/2/022016
语种：English
出版社：IOP Publishing
摘要：To investigate the effect of plant presence on the nitrous oxide flux, we established constructed wetland using two common plant species. Results showed that nitrous oxide emissions have significant difference between constructed wetlands with and without plants, 7567.64 ug N2O m−2 d−1 and 492.67 ug N2O m−2 d−1 respectively (P < 0.001), contrary to microbial biomass nitrogen and total nitrogen content (P > 0.05). The nitrous oxide emissions in constructed wetlands planted with Phragmites australis and Lythrum salicaria had significant differences, 13328.72 ug N2O m−2 d−1 and 1806.56 ug N2O m−2 d−1 respectively (P < 0.001), and they were significantly higher than in constructed wetlands without plant (P < 0.001). The total nitrogen content in constructed wetlands planted with Phragmites australis and Lythrum salicaria had no significant differences (P > 0.05). Hence, plant presence and plant species are important factors in regulating nitrous oxide emissions and total nitrogen removal in constructed wetlands.
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