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：4
页码：042014
DOI：10.1088/1755-1315/199/4/042014
语种：English
出版社：IOP Publishing
摘要：To investigate the effect of plant presence on the carbon dioxide flux, we established nine constructed wetlands using two plant species. Results showed that carbon dioxide emissions have no difference between constructed wetlands with and without plants, 88.90 mg CO2 m-2 h-1 and 34.73 mg CO2 m-2 h-1 respectively (P > 0.05), in accordance with microbial biomass carbon and total organic carbon content (P > 0.05). The carbon dioxide emissions in constructed wetlands planted with Phragmites australis and Lythrum salicaria had no significant differences (P > 0.05), but they were significantly higher than in constructed wetlands without plant (P < 0.001). Similar with carbon dioxide emissions, the total organic carbon concentration and microbial biomass carbon in constructed wetlands with and without plant was not significant differences (P > 0.05). The total organic carbon concentration 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 plant aboveground biomass and total organic carbon removal but not affect carbon dioxide emission in constructed wetlands.
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