Removal and Emission of Carbon Dioxide from Wetlands Soil Under Fluctuating Hydrology: a Case Study from Sudan, Africa

Publication Date : 05/02/2020

DOI : 10.22623/IJAPSA.2020.6002.LCJJ8


Author(s) :

Dr. Manal A/r Osman et al , Prof. Elamin A/m Elamin.


Volume/Issue :
Volume 6
,
Issue 1
(02 - 2020)



Abstract :

The role of hydrology in carbon sequestration in wetlands soil is unmistaken, wetlands are keenly tuned to the hydrology of their climate, their watersheds, and, in some cases, their coastlines. In this study a forested riverine wetlands (Bankieu wetlands), was examined. In summer season, 15 soil samples were taken from 3 profiles. In the winter season, where the wetland suppose to endure flooding and it does not, 3 profiles were made to compare the carbon stock with the summer season in. Carbon concentration in the soil samples collected was determined by Walkly- black method. The carbon turnover times to determine the residence time of carbon in the soil were measured by the Accelerator Mass Spectrometry (AMS) i.e. C14 dating. The data was statistically analyzed using SAS package and the means were separated using Student T-test. In the first season, carbon concentrations in the wetland was 62. gC/cm2 in. In the second season the carbon concentrations was 43.8 gC/cm2. The results were significantly different (p<0.05) in both seasons. The turnover time was -634.57 years, indicating, with the reduction in carbon concentration, that Bankieu is emitting carbon. This means that in the second season Bankieu wetland acted as a source of carbon due to unsuccessful flooding. This study revealed that the hydrology is an important controlling factor as well as the temperature and its pattern has been affected by the climate change


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