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Aims <p>This study is one of several preliminary attempts to measure decomposition rates in two different agricultural systems in the Algerian Sahara. The aim is to assess the degradation of soil organic matter dynamics in two agricultural systems (palm groves—PG and potato fields—PF).</p> Methods <p>Employing (Keuskamp et al. Methods Ecol Evol 4 (1070):1075 <CitationRef CitationID="CR40">2013</CitationRef>) protocol, two types of commercial teas (green tea and rooibos tea) were used to determine the rate of organic matter decomposition (K) and the stabilization factor (S). The chosen soils are two distinct agrosystems located in two regions: El-Oued (E) and Oued Righ (O), where forty-eight pairs of tea bags were buried. The findings show that green tea decomposed faster than rooibos tea in both PG and PF.</p> Results <p>The remaining mass in PG ranged from 43.2% (O) to 45.5% (E) for green tea, while the values for rooibos tea were 85.2% (Site O) and 89.7% (Site E). In the PF, the remaining mass for green tea was 38.6% (Site E) and 38.6% (Site O), while for rooibos tea, it was 63.5% (Site E) and 64.2%. Importantly, PF had significantly higher decomposition rates (K = 0.026&#xa0;g.g<sup>−1</sup>.day<sup>−1</sup>) than PG (K = 0.005&#xa0;g.g<sup>−1</sup>.day<sup>−1</sup>).</p> Conclusion <p>Soil variables in arid regions, such as electric conductivity (EC), pH, CaCO<sub>3</sub>, and sandy texture, all play an important role in carbon decomposition. This process is more rapid in PF soils than in PG soils. These findings emphasize the importance of developing land use management strategies to improve soil properties in Saharan agrosystems.</p>

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Decomposition rates of Tea Bags in two agricultural systems under the climatic conditions of the Algerian Sahara

  • 期刊论文

  • 发表日期：

    2025年7月2日

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  • Fatiha Boukarkar,
  • Ismaiel Berkal,
  • Didier Michot,
  • Christian Walter

摘要

Aims

This study is one of several preliminary attempts to measure decomposition rates in two different agricultural systems in the Algerian Sahara. The aim is to assess the degradation of soil organic matter dynamics in two agricultural systems (palm groves—PG and potato fields—PF).

Methods

Employing (Keuskamp et al. Methods Ecol Evol 4 (1070):1075 2013) protocol, two types of commercial teas (green tea and rooibos tea) were used to determine the rate of organic matter decomposition (K) and the stabilization factor (S). The chosen soils are two distinct agrosystems located in two regions: El-Oued (E) and Oued Righ (O), where forty-eight pairs of tea bags were buried. The findings show that green tea decomposed faster than rooibos tea in both PG and PF.

Results

The remaining mass in PG ranged from 43.2% (O) to 45.5% (E) for green tea, while the values for rooibos tea were 85.2% (Site O) and 89.7% (Site E). In the PF, the remaining mass for green tea was 38.6% (Site E) and 38.6% (Site O), while for rooibos tea, it was 63.5% (Site E) and 64.2%. Importantly, PF had significantly higher decomposition rates (K = 0.026 g.g−1.day−1) than PG (K = 0.005 g.g−1.day−1).

Conclusion

Soil variables in arid regions, such as electric conductivity (EC), pH, CaCO3, and sandy texture, all play an important role in carbon decomposition. This process is more rapid in PF soils than in PG soils. These findings emphasize the importance of developing land use management strategies to improve soil properties in Saharan agrosystems.