Contribution à l’étude de la variation du stock de carbone organique du sol sous agrumiculture

Abstract

Atmospheric carbon sequestration in terrestrial ecosystems has become a significant challenge in the global framework of reducing greenhouse gas emissions. The main objective of this study is to provide estimates of soil organic carbon stocks (0-30cm) in the agricultural workshop of Mazgran at Mostaganem according to the main land uses represented by three different types of citrus crops: orange cultivation, grapefruit cultivation and lemon cultivation in comparison with soil under spontaneous vegetation from the same study area. This Stored organic carbon values varied significantly (p<0.05) between soil under citrus cultivation and soil under spontaneous vegetation, with the highest value recorded for soil under orange cultivation (51.26 ± 6.26 Mg C ha-1), followed by soil under grapefruit cultivation and soil under lemon cultivation, the lowest stock is recorded for soil under spontaneous vegetation (40.52 ± 4.48 Mg C ha-1), the average stock is 45.3 ± 11.45 Mg C ha-1 for all 12 soil samples.