Publication Date:
2021-05-19
Description:
One of the proposed strategies to help mitigate atmospheric carbon emissions is afforestation. This has the potential to contribute to carbon storage directly through biomass and soil carbon accumulation. The little work that has been done on the potential of mangrove forests to sequester atmospheric carbon, estimated the rate of carbon sequestered in mangrove mud to be around 1.5 t C ha-1 yr-1 or a global total of 25.5 x106 tC yr-1. Several factors are responsible for the rate of carbon sequestered, these include substrate type, temperature, moisture content, age of the forest among others. This study, aimed to index the seasonal variation in soil CO2 flux as well as the influence of temperature and soil moisture content in young replanted mangrove stands at Gazi Bay. Soil CO2 flux was measured every fortnight from August 2005 to April 2006 in thirty two plots with different mixes of mangrove species as well as controls using the soda-lime technique. Results indicated variations due to sampling time (season) and other variables i.e. species treatment. There was also a significant effect of soil moisture and soil temperature on soil CO2 flux. Mean daily respiration ranged from 16.86 to 33.23 g m-2 d-1. Seasonal changes in soil respiration were moderately negatively related to temperature changes and positively related to soil moisture. This study suggested that future efforts to predict carbon losses from replanted mangrove plantations should take into consideration the spatial and temporal trends of soil CO2 flux.
Description:
Published
Keywords:
Carbon dioxide
;
Mangroves
;
Seasonal variations
Repository Name:
AquaDocs
Type:
Report Section
,
Not Known
Format:
pp.122-130
Permalink
