Title: The impact of biochar and carbonates carbon on CO₂-C emission and soil sequestration

Authors: Mehmet Fatih Dilekoglu; Erdal Sakin

Addresses: Department of Environmental Engineering, Harran University, Haliliye, Sanliurfa, Turkey ' Department of Soil Science and Plant Nutrition, Harran University, Haliliye, Sanliurfa, Turkey

Abstract: The status of biochar's effects on the sequestration of soil organic carbon is not yet known. To effectively mitigate climate change through SOC sequestration, a net extraction and storage of carbon in the soil relative to atmospheric CO₂ must occur and continue for several hundred years to several thousand years. In this study, the effects of biochar addition on SOC sequestration on soils with different calcareous content were investigated. According to the results obtained in the study, SOC sequencing of soils with 4.86%, 23.32%, and 45.9% calcareous content was measured as 36.4, 62.38, and 42.99 mg-CO₂ kg^-1 soil without adding biochar, respectively, for 21 weeks cumulatively. As a result of the addition of biochar to the same samples, it was measured as 90.79, 106.79, and 107.09 mg-CO₂ kg^-1 soil, respectively.

Keywords: biochar; calcareous soils; global warming; greenhouse effects; Sanli?urfa; soil sequestration; Turkey.

DOI: 10.1504/IJGW.2022.127064

International Journal of Global Warming, 2022 Vol.28 No.4, pp.364 - 374

Received: 19 Nov 2021
Accepted: 29 May 2022
Published online: 21 Nov 2022 *

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