Authors :
Joseph Mayindo Mayele; Susan Balaba Tumwebaze; John Bosco Lamoris Okullo; Augustine LokuleBongo
Volume/Issue :
Volume 5 - 2020, Issue 6 - June
Google Scholar :
http://bitly.ws/9nMw
Scribd :
https://bit.ly/2CeXQJR
DOI :
10.38124/IJISRT20JUN634
Abstract :
Agroforestry (AF) trees have the potentials
to sequester carbon in most farming systems especially
in the face of the current climate change. The objective
of this study was to estimate the diversity, abundance,
and aboveground carbon sequestration potential of onfarm tree species in four different sites, Tokiman,
Gumbo, Kolye West, and Kolye East with various
agroforestry practices in Rajaf County, South Sudan.
Three hundred and fifty-five AF trees were inventoried
by non-destructive methods for diameter at breast
height (DBH), height (H) and Crown width (CR)
variables. Aboveground biomass analyzed using
allometric models was converted to carbon stocks. The
Shannon-Weiner indices for the AF sites indicated that
C. limon, M. indica and P. guajava were more diverse in
Tokiman and Gumbo sites. T. grandis was more diverse
in Kolye East and Kolye West, with S. siamea only
diverse in Kolye West. The diversity analyses also
showed low values of (H’) for Gumbo and Tokiman as
compared to those calculated for Kolye West and Kolye
East. In addition, high levels of aboveground carbon
sequestration were observed in Gumbo and Kolye East
sites where tree species were relatively abundant. Kolye
West, on the other hand, had very few but highly
dominant AF tree species while Tokiman Islands with
the most planted tree species had a rare agro-ecology
that contributed less or nearly zero to aboveground
carbon sequestration.
Keywords :
Diversity index, carbon sequestration, agroforestry, above-ground biomass, Rajaf County, South Sudan.
Agroforestry (AF) trees have the potentials
to sequester carbon in most farming systems especially
in the face of the current climate change. The objective
of this study was to estimate the diversity, abundance,
and aboveground carbon sequestration potential of onfarm tree species in four different sites, Tokiman,
Gumbo, Kolye West, and Kolye East with various
agroforestry practices in Rajaf County, South Sudan.
Three hundred and fifty-five AF trees were inventoried
by non-destructive methods for diameter at breast
height (DBH), height (H) and Crown width (CR)
variables. Aboveground biomass analyzed using
allometric models was converted to carbon stocks. The
Shannon-Weiner indices for the AF sites indicated that
C. limon, M. indica and P. guajava were more diverse in
Tokiman and Gumbo sites. T. grandis was more diverse
in Kolye East and Kolye West, with S. siamea only
diverse in Kolye West. The diversity analyses also
showed low values of (H’) for Gumbo and Tokiman as
compared to those calculated for Kolye West and Kolye
East. In addition, high levels of aboveground carbon
sequestration were observed in Gumbo and Kolye East
sites where tree species were relatively abundant. Kolye
West, on the other hand, had very few but highly
dominant AF tree species while Tokiman Islands with
the most planted tree species had a rare agro-ecology
that contributed less or nearly zero to aboveground
carbon sequestration.
Keywords :
Diversity index, carbon sequestration, agroforestry, above-ground biomass, Rajaf County, South Sudan.
