Unravelling soil carbon response to warming in fire-affected ecosystems

该项目旨在揭示澳大利亚各地受火灾影响的生态系统中土壤碳（C）对变暖的响应的大陆模式，并揭示火灾在塑造土壤呼吸温度敏感性方面的潜在生物地球化学机制。火灾已经改变了地球40%以上的陆地表面，野火频率预计将在全球变暖下增加。该项目预计将产生新的知识，火如何影响土壤到大气中的碳通量在温暖的气候使用多学科的方法。预期成果包括提高利用地球系统模型预测火灾频率增加情况下陆地生态系统向大气的碳通量及其对气候的反馈的能力。

This project aims to reveal the continental pattern of soil carbon (C) response to warming in fire-affected ecosystems across Australia and to unravel the biogeochemical mechanisms underlying fire’s role in shaping the temperature sensitivity of soil respiration. Fire has modified over 40% of the Earth’s land surface and wildfire frequency is predicted to increase under global warming. This project expects to generate new knowledge on how fire influences soil-to-atmosphere C fluxes in a warmer climate using a multi-disciplinary approach. Expected outcomes include an enhanced capacity to predict the terrestrial ecosystem-to-atmosphere C fluxes and their feedbacks to climate under increasing frequency of fire using Earth-system models.