Microbial community shifts reflect losses of native soil carbon with pyrogenic and fresh organic matter additions and are greatest in low-carbon soils.

ABSTRACT: Soil organic carbon (SOC) plays an important role in regulating global climate change, carbon and nutrient cycling in soils, and soil moisture. Organic matter (OM) additions to soils can affect the rate at which SOC is mineralized by microbes, with potentially important effects on SOC stocks. Understanding how pyrogenic organic matter (PyOM) affects the cycling of native SOC (nSOC) and the soil microbes responsible for these effects is important for fire-affected ecosystems as well as for biochar-amended systems. We used an incubation trial with five different soils from National Ecological Observatory Network sites across the US and ¹³C-labelled 350°C corn stover PyOM and fresh corn stover OM to trace nSOC-derived CO₂ emissions with and without PyOM and OM amendments

SUBMITTER: Whitman T 

PROVIDER: S-EPMC8091118 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature