Accumulation of soluble organic matter, iron mineral transformation and microbial community restructuring during plant colonization of coal fly ash (PRJCA051756)
This study investigates how pioneer plant colonization initiates aggregate formation during coal fly ash weathering and soil development, and how biogeochemical processes, microbial community shifts, and iron mineral transformation are coupled. A pot experiment with perennial ryegrass (Lolium perenne L.) and alfalfa (Medicago sativa L.) was conducted. Biogeochemical analyses were combined with 3D EEM fluorescence spectroscopy, X ray diffraction, ATR FTIR spectroscopy, and XPS, and microbial DNA sequencing was used to characterize bacterial community changes in the rhizosphere.