TY - JOUR
T1 - Effect of wastewater discharge on greenhouse gas fluxes from mangrove soils
AU - Chen, G. C.
AU - Tam, N. F.Y.
AU - Wong, Y. S.
AU - Ye, Y.
N1 - Funding Information:
The work described in this paper was financially supported by a grant from the Research Grants Council of the Hong Kong SAR (Project number: CityU160907). The authors are grateful to Mr. Benz Chan, Ms. Amy Chong, and Dr. S. M. Yiu for their technical support in GC and FIA analyses.
PY - 2011/2
Y1 - 2011/2
N2 - The effects of wastewater on atmospheric fluxes of three greenhouse gases, nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2) from mangrove soils were investigated, and the differences among shrimp pond wastewater (SP), livestock wastewater (LS) and municipal (S) sewage were compared. The gas emissions from mangrove soils were significantly enhanced after wastewater irrigation and the highest emission of N2O and CO2 were obtained from SP. High N2O emission was also found in S treatment, where fluxes varied from 13.42 to 16.78 μmol m-2 h-1, but the CH4 and CO2 fluxes were as low as the control irrigated with tap water. Results of soil analyses indicated that the high N2O emissions from mangrove soils receiving SP and S treatments were attributed to the denitrification and nitrification processes, respectively. The highest CH4 flux was recorded in LS treatment (186.14-762.40 μmol m-2 h-1), which also had the highest CO2 flux. The fluxes measured during the non-irrigation period were lower than those measured 4 h after irrigation.
AB - The effects of wastewater on atmospheric fluxes of three greenhouse gases, nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2) from mangrove soils were investigated, and the differences among shrimp pond wastewater (SP), livestock wastewater (LS) and municipal (S) sewage were compared. The gas emissions from mangrove soils were significantly enhanced after wastewater irrigation and the highest emission of N2O and CO2 were obtained from SP. High N2O emission was also found in S treatment, where fluxes varied from 13.42 to 16.78 μmol m-2 h-1, but the CH4 and CO2 fluxes were as low as the control irrigated with tap water. Results of soil analyses indicated that the high N2O emissions from mangrove soils receiving SP and S treatments were attributed to the denitrification and nitrification processes, respectively. The highest CH4 flux was recorded in LS treatment (186.14-762.40 μmol m-2 h-1), which also had the highest CO2 flux. The fluxes measured during the non-irrigation period were lower than those measured 4 h after irrigation.
KW - Denitrification
KW - Mangrove
KW - Methane
KW - Nitrification
KW - Nitrous oxide
UR - http://www.scopus.com/inward/record.url?scp=79551475039&partnerID=8YFLogxK
U2 - 10.1016/j.atmosenv.2010.11.034
DO - 10.1016/j.atmosenv.2010.11.034
M3 - Article
AN - SCOPUS:79551475039
SN - 1352-2310
VL - 45
SP - 1110
EP - 1115
JO - Atmospheric Environment
JF - Atmospheric Environment
IS - 5
ER -