Post-wildfire patterns of bacterial communities and functions in the permafrost

Global warming increases the frequency of wildfires in permafrost regions known as a large organic carbon (C) reservoir. The thawing permafrost causes extended changes in microbial characteristics of the soil, presumably accelerating the biochemical cycles. Our study aims to test if the bacterial communities distinct phylogenetically along a fire chronosequence in different successional stages (of 3, 25, 46 and >100 years ) after a wildfire.

全球变暖加剧了作为大型有机碳（C）库的永久冻土区域的野火发生频次。永久冻土解冻会使土壤微生物特性发生广泛改变，据推测可加速生物化学循环进程。本研究旨在检验：野火过后，处于3年、25年、46年及100年以上不同演替阶段的火灾演替序列中，细菌群落在系统发育层面是否存在显著差异。