Next Article in Journal
Regional Socioeconomic Changes Affecting Rural Area Livelihoods and Atlantic Forest Transitions
Next Article in Special Issue
A Nested Land Uses–Landscapes–Livelihoods Approach to Assess the Real Costs of Land-Use Transitions: Insights from Southeast Asia
Previous Article in Journal
Understanding the Biodiversity Contributions of Small Protected Areas Presents Many Challenges
Previous Article in Special Issue
Criteria to Confirm Models that Simulate Deforestation and Carbon Disturbance
Open AccessArticle

Predicting the Potential Impact of Climate Change on Carbon Stock in Semi-Arid West African Savannas

1
West African Science Service Centre for Climate Change and Adapted Land Use (WASCAL), Competence Centre, 06 BP 9507 Ouagadougou 06, Burkina Faso
2
Laboratory of Plant Biology and Ecology, University Ouaga I Pr Joseph Ki-Zerbo, UFR/SVT, 03 BP 7021 Ouagadougou 03, Burkina Faso
3
UFR des Sciences de la Nature, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d’Ivoire
*
Author to whom correspondence should be addressed.
Land 2018, 7(4), 124; https://doi.org/10.3390/land7040124
Received: 2 September 2018 / Revised: 17 October 2018 / Accepted: 18 October 2018 / Published: 21 October 2018
West African savannas are experiencing rapid land cover change that threatens biodiversity and affects ecosystem productivity through the loss of habitat and biomass, and carbon emissions into the atmosphere exacerbating climate change effects. Therefore, reducing carbon emissions from deforestation and forest degradation in these areas is critical in the efforts to combat climate change. For such restorative actions to be successful, they must be grounded on a clear knowledge of the extent to which climate change affects carbon storage in soil and biomass according to different land uses. The current study was undertaken in semi-arid savannas in Dano, southwestern Burkina Faso, with the threefold objective of: (i) identifying the main land use and land cover categories (LULCc) in a watershed; (ii) assessing the carbon stocks (biomass and soil) in the selected LULCc; and (iii) predicting the effects of climate change on the spatial distribution of the carbon stock. Dendrometric data (Diameter at Breast Height (DBH) and height) of woody species and soil samples were measured and collected, respectively, in 43 plots, each measuring 50 × 20 m. Tree biomass carbon stocks were calculated using allometric equations while soil organic carbon (SOC) stocks were measured at two depths (0–20 and 20–50 cm). To assess the impact of climate change on carbon stocks, geographical location records of carbon stocks, remote sensing spectral bands, topographic data, and bioclimatic variables were used. For projections of future climatic conditions, predictions from two climate models (MPI-ESM-MR and HadGEM2-ES) of CMIP5 were used under Representative Concentration Pathway (RCP) 8.5 and modeling was performed using random forest regression. Results showed that the most dominant LULCc are cropland (37.2%) and tree savannas (35.51%). Carbon stocks in woody biomass were higher in woodland (10.2 ± 6.4 Mg·ha−1) and gallery forests (7.75 ± 4.05 Mg·ha−1), while the lowest values were recorded in shrub savannas (0.9 ± 1.2 Mg·ha−1) and tree savannas (1.6 ± 0.6 Mg·ha−1). The highest SOC stock was recorded in gallery forests (30.2 ± 15.6 Mg·ha−1) and the lowest in the cropland (14.9 ± 5.7 Mg·ha−1). Based on modeling results, it appears clearly that climate change might have an impact on carbon stock at horizon 2070 by decreasing the storage capacity of various land units which are currently suitable. The decrease was more important under HadGEM2-ES (90.0%) and less under MPI-ESM-MR (89.4%). These findings call for smart and sustainable land use management practices in the study area to unlock the potential of these landscapes to sequestering carbon. View Full-Text
Keywords: carbon storage; land use and land cover; forest degradation; random forest regression; modeling; Burkina Faso carbon storage; land use and land cover; forest degradation; random forest regression; modeling; Burkina Faso
Show Figures

Figure 1

MDPI and ACS Style

Dimobe, K.; Kouakou, J.L.N.; Tondoh, J.E.; Zoungrana, B.J.-B.; Forkuor, G.; Ouédraogo, K. Predicting the Potential Impact of Climate Change on Carbon Stock in Semi-Arid West African Savannas. Land 2018, 7, 124.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop