抄録
The rise in surface temperature due to climate warming has a profound impact on the decomposition rate of global soil organic carbon, potentially altering the stability of soil carbon pools and their role in the carbon cycle. This study conducted long-term experiments and model simulations on soil systems from different climate zones, including temperate, tropical, and polar regions, to systematically investigate the effects of temperature rise on the decomposition rates of surface and deep soil organic carbon. The research focused on analyzing the response mechanisms of microbial communities, revealing the complex interactions between microbial activity, enzymatic reactions, and soil temperature and moisture. The results showed that temperature increases not only accelerated the decomposition of surface organic carbon but also significantly impacted the release of deep soil organic carbon. The synergistic effects of soil temperature and moisture exhibited noticeable differences across different climate zones. By integrating long-term experimental data and model simulations, this study provides new perspectives and empirical data on soil carbon dynamics in the context of climate warming. It also provides an academic reference for predicting global carbon emissions and studying the stability of carbon pools in climate models.
