the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Soil organic carbon stocks in semi-arid West African drylands: implications for climate change adaptation and mitigation
Jérôme Ebagnerin Tondoh
Issa Ouédraogo
Jules Bayala
Lulseged Tamene
Andrew Sila
Tor-Gunnar Vågen
Antoine Kalinganiré
Abstract. In the West African drylands, SOC sequestration is seen as one of the prominent strategies to both enhance the resilience of agro-ecosystems and mitigate global greenhouse effects. However, there is a dearth of baseline data that impede the design of site-appropriate recommended management practices (RMPs) to improve and sustain SOC accrual. In this study, the Land Degradation Surveillance Framework (LDSF), a nested hierarchical sampling design was used to assess SOC and its spatial variability across the semi-arid zones of Ghana (Lambussie), Burkina Faso (Bondigui) and Mali (Finkolo). Soil samples were collected from three sites of 100 km2 stratified into 16 clusters and 160 plots and thereafter soil parameters were then analyzed using MIR spectroscopy. Regardless of soil strata, SOC storage with 95 % confidence level in semi-arid landscapes potentially ranged between 112 200 ± 14 000 and 253 000 ± 34 000 Mg C corresponding to 411 400 ± 51 333 Mg CO2-eq and 927 666.7 ± 124 666.7 Mg CO2-eq in the entire study area. On the other hand, investigation on the potential of climate change mitigation through SOC revealed contrasted figures as accumulation rates in cultivated lands ranged from 0.04 to 0.18 MgC ha−1 yr−1 and are balanced by higher depletion rates of −0.004 to −0.73 Mg ha−1 yr−1. This indicates the potential of semi-arid soils to store carbon through improved land management practices. Landscape study structured in cluster-level analysis revealed heterogeneity in the distribution of SOC stocks, a mandatory finer level analysis prior to effective decision-making about RMPs.
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Jérôme Ebagnerin Tondoh et al.
Interactive discussion


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RC1: 'RC: Comments', Anonymous Referee #1, 27 Jul 2016
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AC1: 'Response to Reviewer 1's comments', Jerome E. Tondoh, 13 Sep 2016
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AC1: 'Response to Reviewer 1's comments', Jerome E. Tondoh, 13 Sep 2016
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RC2: 'Soil organic carbon stocks in semi-arid West African drylands: implications for climate change adaptation and mitigation Review', Anonymous Referee #2, 08 Aug 2016
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AC2: 'Response to Reviewer 2's comments', Jerome E. Tondoh, 13 Sep 2016
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AC2: 'Response to Reviewer 2's comments', Jerome E. Tondoh, 13 Sep 2016
Interactive discussion


-
RC1: 'RC: Comments', Anonymous Referee #1, 27 Jul 2016
-
AC1: 'Response to Reviewer 1's comments', Jerome E. Tondoh, 13 Sep 2016
-
AC1: 'Response to Reviewer 1's comments', Jerome E. Tondoh, 13 Sep 2016
-
RC2: 'Soil organic carbon stocks in semi-arid West African drylands: implications for climate change adaptation and mitigation Review', Anonymous Referee #2, 08 Aug 2016
-
AC2: 'Response to Reviewer 2's comments', Jerome E. Tondoh, 13 Sep 2016
-
AC2: 'Response to Reviewer 2's comments', Jerome E. Tondoh, 13 Sep 2016
Jérôme Ebagnerin Tondoh et al.
Jérôme Ebagnerin Tondoh et al.
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Cited
3 citations as recorded by crossref.
- Estimates of carbon stocks in sandy soils cultivated under local management practices in Senegal’s groundnut basin O. Malou et al. 10.1007/s10113-021-01790-2
- Economic Valuation of Ecosystem Services from Small-Scale Agricultural Management Interventions in Burkina Faso: A Discrete Choice Experiment Approach P. Houessionon et al. 10.3390/su9091672
- Responses of soil carbon sequestration to climate‐smart agriculture practices: A meta‐analysis X. Bai et al. 10.1111/gcb.14658