@article{fdi:010097054,
  title = {{D}rivers and vertical {CO}2 flux balances in a {S}ahelian agroforestry system : insights from high frequency measurements},
  author = {{B}a, {S}. {M}. and {R}oupsard, {O}. and {C}hapuis {L}ardy, {L}ydie and {B}ouvery, {F}. and {A}gbohessou, {Y}. and {D}uthoit, {M}. and {W}ieckowski, {A}. and {T}agesson, {T}. and {A}ssouma, {M}. and {G}aglo, {E}. and {D}elon, {C}. and {S}ambou, {B}. and {S}erca, {D}ominique},
  editor = {},
  language = {{ENG}},
  abstract = {{A}groforestry systems - combining trees with crops and/or livestock - are increasingly promoted as sustainable and climate-resilient land-use strategies. {D}espite their widespread presence in the {S}ahel, experimental data on their potential as carbon sinks are scarce. {T}his study presents a full-year, high-frequency dataset of {CO}2 fluxes in a {S}ahelian agro-silvo-pastoral parkland dominated by {F}aidherbia albida, located in {S}enegal's groundnut basin. {CO}2 fluxes were continuously measured using automated dynamic chambers, allowing the quantification of soil and crop respiration ({R}ch), gross primary production ({GPP}ch), and net carbon exchange ({FCO}2ch) under both full sun and shaded (under tree canopies) environments. {S}easonal patterns of {CO}2 fluxes were similar in both environments, with peaks during the rainy season. {R}ch and {GPP}ch were significantly higher under tree canopies, indicating a "fertile island" effect. {CO}2 flux variability was primarily driven by soil moisture and leaf area index. {C}hamber-based {GPP} estimates closely matched those from {E}ddy {C}ovariance measurements. {O}n an annual scale, {F}. albida trees contributed approximately 23 % of total ecosystem {GPP}, with a carbon use efficiency of 0.48. {N}et annual vertical {CO}2 exchange was estimated at -1.4 +/- 0.46 and -1.8 +/- 0.17 {M}g {C}-{CO}2 ha-1 using chamber and {E}ddy {C}ovariance methods, respectively. {T}hese findings underscore the role of {F}. albida-based agroforestry systems as effective carbon sinks in {S}ahelian landscapes, supporting their potential contribution to climate change mitigation.},
  keywords = {{SENEGAL} ; {ZONE} {SAHELIENNE}},
  booktitle = {},
  journal = {{S}oil},
  volume = {12},
  numero = {1},
  pages = {471--495},
  ISSN = {2199-3971},
  year = {2026},
  DOI = {10.5194/soil-12-471-2026},
  URL = {https://www.documentation.ird.fr/hor/fdi:010097054},
}