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Purpose <p>Soil carbon sequestration (SCS) contributes to emission reduction, whereas the life cycle assessment of sustainable aviation fuel (SAF) does not consider SCS during the planting phase of energy plants. This study investigated the potential of carbon sequestration in Dongting Lake and its surroundings by simulating the cultivation of the energy plant <i>Arundo donax</i> in the region, as well as the emission reduction benefits of SAF production, with the aim of improving the sustainability of SAF, and also providing a new way of thought for the prediction of soil organic carbon.</p> Materials and methods <p>We used TimeGAN-Transformer-based soil carbon dynamics prediction method to optimize the CENTURY model, and combined with life-cycle assessment (LCA) to analyze the benefits of soil carbon sequestration on the emission reduction of SAF produced by the Fischer-Tropsch (F-T) and Alcohol to Jet processes (ATJ).</p> Results and discussion <p>The results showed that the SCS rate after optimization was − 0.566 to 1.621 Mg C/ha/yr. After considering the effect of soil carbon sequestration, the entire life cycle greenhouse gas emissions from F-T and ATJ processes were − 20&#xa0;g CO<sub>2</sub> e/MJ and 15.6&#xa0;g CO<sub>2</sub> e/MJ, and the SAF emission reduction potential reached 122.5% and 82.5%, respectively.</p> Conclusions <p>In the management and restoration of wetlands, energy plants can be planted, such as <i>Arundo donax</i>, which not only can be made into SAF with great emission reduction potential through different processes, but also can increase the capacity of SCS and effectively mitigate climate change.</p>

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The impact of soil carbon sequestration on the LCA of sustainable aviation fuel in Arundo donax: Using TimeGAN-Transformer to optimize the CENTURY model simulation

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • Zhang Zongwei,
  • Li Wenjie,
  • Wang Xinyuan,
  • Liu Haonan,
  • Yang Xiaojun,
  • Ding Shuiting

摘要

Purpose

Soil carbon sequestration (SCS) contributes to emission reduction, whereas the life cycle assessment of sustainable aviation fuel (SAF) does not consider SCS during the planting phase of energy plants. This study investigated the potential of carbon sequestration in Dongting Lake and its surroundings by simulating the cultivation of the energy plant Arundo donax in the region, as well as the emission reduction benefits of SAF production, with the aim of improving the sustainability of SAF, and also providing a new way of thought for the prediction of soil organic carbon.

Materials and methods

We used TimeGAN-Transformer-based soil carbon dynamics prediction method to optimize the CENTURY model, and combined with life-cycle assessment (LCA) to analyze the benefits of soil carbon sequestration on the emission reduction of SAF produced by the Fischer-Tropsch (F-T) and Alcohol to Jet processes (ATJ).

Results and discussion

The results showed that the SCS rate after optimization was − 0.566 to 1.621 Mg C/ha/yr. After considering the effect of soil carbon sequestration, the entire life cycle greenhouse gas emissions from F-T and ATJ processes were − 20 g CO2 e/MJ and 15.6 g CO2 e/MJ, and the SAF emission reduction potential reached 122.5% and 82.5%, respectively.

Conclusions

In the management and restoration of wetlands, energy plants can be planted, such as Arundo donax, which not only can be made into SAF with great emission reduction potential through different processes, but also can increase the capacity of SCS and effectively mitigate climate change.