Carbon dioxide flux in constructed wetland with/without plant

2018 1st International Conference on Environment Prevention and Pollution Control Technology

生态环境科学

Sun, Hongying^1,2 ; Xin, Quanwei^1 ; Luo, Hailing^2 ; Ma, Zhihui^1 ; Xiao, Liyun^3 ; Liu, Dong^4 ; Lan, Siren^1

Forestry College, Fujian Agriculture and Forestry University, Fuzhou

350002, China^1

National Engineering Research Center of Juncao, Fujian Agriculture and Forestry University, Fuzhou

350002, China^2

Regional Management Office for Quality and Safety of Agricultural Products, Anqiu

262100, China^3

Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing

210042, China^4

关键词: Above ground biomass;    Carbon dioxide emissions;    Constructed wetlands;    Microbial biomass carbon;    Phragmites australis;    Total Organic Carbon;    Total organic carbon content;    Total organic carbon removal;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/199/4/042014/pdf
DOI  :  10.1088/1755-1315/199/4/042014

学科分类：环境科学（综合）

来源: IOP

【 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 (P0.05). 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.