Estimation of Soil Carbon Stocks of Urban Freshwater Wetlands in the Colombo Ramsar Wetland City and their Potential Role in Climate Change Mitigation

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dc.contributor.author Dayathilake, D.D.T.L.
dc.contributor.author Lokupitiya, E.
dc.contributor.author Wijeratne, V.P.I.S.
dc.date.accessioned 2022-07-18T06:08:03Z
dc.date.available 2022-07-18T06:08:03Z
dc.date.issued 2021
dc.identifier.citation Dayathilake, D.D.T.L., Lokupitiya, E. & Wijeratne, V.P.I.S. (2021). Estimation of Soil Carbon Stocks of Urban Freshwater Wetlands in the Colombo Ramsar Wetland City and their Potential Role in Climate Change Mitigation. Wetlands, 41. https://doi.org/10.1007/s13157-021-01424-7 en_US
dc.identifier.other https://doi.org/10.1007/s13157-021-01424-7
dc.identifier.uri http://archive.cmb.ac.lk:8080/xmlui/handle/70130/6867
dc.description.abstract Wetlands hold significant potential for climate change mitigation due to their high capacity to sequester atmospheric carbon dioxide (CO2). Colombo, Sri Lanka was recently declared as one of the eighteen global Ramsar wetland cities. The current study represents the first attempt to quantify soil organic carbon (SOC) stocks held by the urban freshwater wetlands in Colombo. The study focused on the extensive urban wetland ecosystems of Kolonnawa wetland and Thalawathugoda wetland park. SOC stocks were determined using three parameters: depth of soil, bulk density, and SOC concentration. Loss on ignition method was used in quantifying SOC concentrations. Average SOC stocks, up to a depth of 60 cm at Kolonnawa wetland and Thalawathugoda wetland park were estimated at 504 ± 14 t C/ha and 550 ± 23 t C/ha, respectively. Furthermore, the total SOC stock at Kolonnawa wetland and Thalawathugoda wetland park were estimated at 198,408 ± 5564 t CO2eq and 66,313 ± 2764 t CO2eq, respectively. When considering global estimates, it was found that freshwater wetlands in Colombo hold a higher SOC stock than tropical wet forests and tropical dry forests. The current study highlights the importance of urban ecosystems in mitigating the ever increasing concentrations of atmospheric CO2 . en_US
dc.language.iso en en_US
dc.publisher Wetlands, Springer en_US
dc.subject Soil organic carbon stock en_US
dc.subject Tropical urban wetlands en_US
dc.subject Histosols en_US
dc.title Estimation of Soil Carbon Stocks of Urban Freshwater Wetlands in the Colombo Ramsar Wetland City and their Potential Role in Climate Change Mitigation en_US
dc.type Article en_US


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