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：186
期号：3
页码：012076
DOI：10.1088/1755-1315/186/3/012076
语种：English
出版社：IOP Publishing
摘要：To investigate the effect of plant presence/absence and plant species on the methane emission, we established three treatments by using two different plant species in microcosms of constructed wetlands. Results showed that methane emission and carbon removal efficiency were significantly difference among the 3 treatments (P < 0.001). The methane emission (P < 0.001) and microbial biomass (P < 0.01) in the planted microcosms were higher than in those unplanted treatment, but total organic carbon (P < 0.001) concentrations in effluents were lower. The methane emission and total organic carbon had no significant difference between those microcosms planted with Phragmites australis and Typha orientalis (P > 0.05). Although the aboveground and belowground biomass in the microcosms planted with Phragmites australis (P < 0.05) was lower than that in the microcosms planted with Typha orientalis, the shoot height of Phragmites australis was higher than Typha orientalis (P < 0.001). Hence, our study highlights the importance of plant presence/absence and plant species in mediating methane emission intensity in CWs.
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