Dynamics of Soil Carbon Average Content Insights from a Global Approach to Climate Change Mitigation

Rodrigues, Cristina I. Dias; Brito, Luís Miguel; Nunes, Leonel J. R.

http://hdl.handle.net/10198/34386

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
Dynamics of Soil Carbon.pdf		2.29 MB	Adobe PDF	Download

Send Feedback

Authors

Rodrigues, Cristina I. Dias

Brito, Luís Miguel

Nunes, Leonel J. R.

Abstract(s)

This study provides an in-depth examination of the average values of gravi- metric carbon content, measured in grams per kilogram (g/kg), and the organic Carbon (OC) content, quantified in kilograms per square meter (kg/ m2), within various soil classifications and depths. Highlighting the relevance of such research, it delves into the intricacies of soil OC dynamics across diverse depth strata and offers a comparative analysis of different soil types, each with distinct carbon sequestration capacities. Utilizing the latest version of the world soil database, the research integrates three interconnected data sets: soil classification, density, and OC. In total, the study includes 51,507 soil profile layers to calculate the average gravimetric OC content in the fine- earth fraction. In parallel, the average OC content in the fine-earth fraction was determined across 6,197 soil profile layers. This comprehensive data is organized into 34 separate soil units, each dissected across four depth categories: 0–30 cm, 0–100 cm, 0–200 cm and 0–2590 cm. The findings from this analysis reveal a consistent pattern: as depth increases, both the gravimetric content and average OC content tend to decrease. However, it is noteworthy that this trend is not universal. Certain soil units demonstrate an opposing behavior, with an increase in average OC content observed at greater depths, contradicting the prevailing trend. This divergence under- scores the complexity of soil OC dynamics and the inherent variability across different soil units.

Keywords

Carbon sequestration capacity Gravimetric carbon content Organic carbon (OC) content Soil carbon dynamics Soil typologies

URI

http://hdl.handle.net/10198/34386

Citation

Rodrigues, Cristina I. Dias; Brito, Luís; Nunes, Leonel J. R. (2025). Dynamics of Soil Carbon Average Content Insights from a Global Approach to Climate Change Mitigation. Communications in Soil Science and Plant Analysis. ISSN 0010-3624. 56:6, p. 1-16