Unravelling soil carbon response to warming in fire-affected ecosystems

该项目旨在揭示澳大利亚受火灾影响的生态系统中土壤碳(C)对变暖响应的大陆模式，并揭示火灾在塑造土壤呼吸温度敏感性中的作用的生物地球化学机制。火灾已经改变了超过40%的地球陆地表面，预计在全球变暖的情况下，野火的频率会增加。该项目希望利用多学科方法，就火灾如何影响温暖气候下土壤到大气的碳通量产生新的知识。预期的结果包括增强利用地球系统模型预测在火灾频率增加的情况下陆地生态系统对大气碳通量及其对气候反馈的能力。

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.