{"id":969,"date":"2026-06-17T17:24:16","date_gmt":"2026-06-17T17:24:16","guid":{"rendered":"https:\/\/www.gril-ujkz.com\/index.php\/?p=969"},"modified":"2026-06-17T17:24:16","modified_gmt":"2026-06-17T17:24:16","slug":"can-permanganate-oxidizable-carbon-microbial-respiration-and-carbon-mineralization-rate-reflect-carbon-dynamics-across-land-use-and-pedo-climate-gradients-in-west-african-semi-arid-zones","status":"publish","type":"post","link":"https:\/\/www.gril-ujkz.com\/index.php\/can-permanganate-oxidizable-carbon-microbial-respiration-and-carbon-mineralization-rate-reflect-carbon-dynamics-across-land-use-and-pedo-climate-gradients-in-west-african-semi-arid-zones\/articles-scientifiques\/06\/","title":{"rendered":"Can permanganate oxidizable carbon, microbial respiration, and carbon mineralization rate reflect carbon dynamics across land use and pedo-climate gradients in West African semi-arid zones?"},"content":{"rendered":"

Ann\u00e9e<\/strong>\u00a0: 2025<\/p>\n

Revue<\/strong>\u00a0: Frontiers in Soil Science\u00a0, 5 (1671112) :\u00a01-15<\/p>\n

Lien de l’article :<\/strong>\u00a0\u00a0DOI 10.3389\/fsoil.2025.1671112<\/a><\/p>\n

Discipline :<\/strong>\u00a0Sciences biologiques<\/p>\n

Auteur(s) :<\/strong>\u00a0Gannouka Nadjire, Alimata Arzouma Bandaogo, Amanuel W. Gebremichael, Oumarou Ou\u00e9draogo and Joseph Issaka Boussim<\/p>\n

Auteur(s) tagu\u00e9s :<\/strong>\u00a0BOUSSIM Issaka Joseph<\/a>\u00a0OUEDRAOGO Oumarou<\/a><\/p>\n

R\u00e9sum\u00e9<\/h2>\n
\n
\n

Climate variability, soil type, land use, and vegetation structure modulate soil organic carbon (SOC) dynamics, but their effects on sensitive soil carbon indicators are not adequately quantified in semi-arid ecosystems. This research examined the independent and synergistic impacts of pedo-climate, land use, and canopy cover on permanganate oxidizable carbon (POXC), soil microbial respiration (CO2-C), and the carbon mineralization rate (CMR) in the semi-arid regions of West Africa to determine their effectiveness as indicators of soil carbon dynamics. We collected 480 composite soil samples across Sudanian and Sudano-Sahelian zones, covering three land use types (cropland, fallow,
\nprotected area), two canopy positions (subcanopy, intercanopy), and two depths (0\u201310 cm, 10\u201330 cm). POXC, CO2-C, and SOC concentrations were analyzed, and CMR was derived from CO2-C per unit SOC. The indicators exhibited distinct sensitivities, with POXC responding primarily to pedo-climate and canopy cover. CO2-C was influenced by all factors with depth-amplified variation, and CMR was most sensitive to land use and canopy position in topsoil but shifted to pedo-climatic control at depth. The fixed effects explained a small portion (14% to 16%) of topsoil (0\u201310 cm) variance, indicating significant unmeasured variability sources. Depth-moderated indicator relationships, POXC\u2013SOC correlations weakened with depth, whereas CO2-C\u2013CMR associations strengthened, indicating a transition from surface labile carbon control to deeper microbial and nutrient constraints. Critically, the indicators provide complementary, depth\u2011explicit information; POXC and SOC contextualize pool size and labile availability, whereas CO2-C and CMR assess the functional accessibility and energetic feasibility of decomposition. Therefore, these metrics are best used jointly to signal early changes rather than as stand-alone indicators. Future work should identify additional drivers to enhance capacity across depths and contexts.<\/p>\n<\/section>\n

\n

Mots-cl\u00e9s<\/h2>\n

carbon dynamics, soil labile carbon, pedo-climatic conditions, dryland, microbial respiration, mineralization rates<\/p>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Ann\u00e9e\u00a0: 2025 Revue\u00a0: Frontiers in Soil Science\u00a0, 5 (1671112) :\u00a01-15 Lien de l’article :\u00a0\u00a0DOI 10.3389\/fsoil.2025.1671112 Discipline :\u00a0Sciences biologiques Auteur(s) :\u00a0Gannouka Nadjire, Alimata Arzouma Bandaogo, Amanuel W. Gebremichael, Oumarou Ou\u00e9draogo and Joseph Issaka Boussim Auteur(s) tagu\u00e9s :\u00a0BOUSSIM Issaka Joseph\u00a0OUEDRAOGO Oumarou R\u00e9sum\u00e9 Climate variability, soil type, land use, and vegetation structure modulate soil organic carbon (SOC) dynamics, […]<\/p>\n","protected":false},"author":46,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[142,143,141,134,39],"class_list":["post-969","post","type-post","status-publish","format-standard","hentry","category-articles-scientifiques","tag-alimata-arzouma-bandaogo","tag-amanuel-w-gebremichael","tag-gannouka-nadjire","tag-joseph-issaka-boussim","tag-oumarou-ouedraogo"],"_links":{"self":[{"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/posts\/969","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/users\/46"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/comments?post=969"}],"version-history":[{"count":1,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/posts\/969\/revisions"}],"predecessor-version":[{"id":970,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/posts\/969\/revisions\/970"}],"wp:attachment":[{"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/media?parent=969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/categories?post=969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/tags?post=969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}