Initial Litter Chemistry and UV Radiation Drive Chemical Divergence in Litter during Decomposition.

ABSTRACT: Litter's chemical complexity influences carbon (C) cycling during its decomposition. However, the chemical and microbial mechanisms underlying the divergence or convergence of chemical complexity under UV radiation remain poorly understood. Here, we conducted a 397-day field experiment using ¹³C cross-polarization magic-angle spinning nuclear magnetic resonance (¹³C-CPMAS NMR) to investigate the interactions among the initial chemistry, microbial communities, and UV radiation during decomposition. Our study found that the initial concentrations of O-substituted aromatic C, di-O-alkyl C, and O-alkyl C in Deschampsia caespitosa were higher than those in Kobresia tibetica. Litter's chemical composition exhibited divergent patterns based on the initial chemi

SUBMITTER: Yao B 

PROVIDER: S-EPMC11356187 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature