Fire-induced changes to soil pH and organic matter significantly impact microbial responses after a fire, but how they do so is still not fully understood.
Researchers conducted experiments using forest soil subjected to different heating levels (unheated, 300°C, 450°C, and 500°C) to analyze their effects on microbial abundance and identify key factors influencing this change.
Results showed that microbial abundance decreased in heated soils compared to unheated soils, with nutrient additions and pH adjustments assisting growth only in less intense heat conditions; high-temperature treatments led to a reduction in organic compounds and increased aromatic compounds that may hinder microbial proliferation.