@article{fdi:010096136,
  title = {{R}ole of topography and physico-chemical properties on organic carbon distribution in semi-arid calcareous soils},
  author = {{K}hairallah, {W}. and {B}ahri, {H}. and {C}oulouma, {G}. and {A}nnabi, {M}. and {R}aclot, {D}amien},
  editor = {},
  language = {{ENG}},
  abstract = {{S}oil represents a significant reservoir of organic carbon within terrestrial ecosystems. {D}espite considerable research efforts, the factors that control the distribution of soil organic carbon ({SOC}) remain insufficiently understood, particularly in calcareous soils where recent studies have indicated potential interactions between inorganic and organic carbon pools. {T}he objective of this study was to evaluate the influence of topography and physico-chemical soil properties on the distribution of soil organic carbon ({SOC}) in a small calcareous catchment cultivated with annual crops under a semi-arid {M}editerranean climate ({K}amech, {C}ape {B}on, {N}ortheast {T}unisia). {S}oil samples were gathered from all horizons of ten soil profiles, selected to encompass the three primary soil types identified within the study catchment. {A}s anticipated, the {SOC} contents were found to be low and to decrease significantly with increasing soil depth. {I}t is noteworthy that significantly higher {SOC} levels were observed in {V}ertisols in comparison to {C}ambisols and {C}alcisols. {T}he results indicated that clay content was the primary factor influencing {SOC} distribution in the studied soils. {I}n addition, the topographical location of the profile was identified as a secondary factor in explaining lateral {SOC} distribution within the catchment. {F}urthermore, the study demonstrated a negative correlation between {SOC} and soil inorganic carbon ({SIC}), which is an unexpected result for semi-arid environments and requires further investigation.},
  keywords = {{TUNISIE} ; {KAMECH} ; {CAP} {BON}},
  booktitle = {},
  journal = {{E}uro-{M}editerranean {J}ournal for {E}nvironmental {I}ntegration},
  volume = {10},
  numero = {4},
  pages = {2851--2861},
  ISSN = {2365-6433},
  year = {2025},
  DOI = {10.1007/s41207-025-00774-6},
  URL = {https://www.documentation.ird.fr/hor/fdi:010096136},
}