Co-application of biochar and compost enhanced soil carbon sequestration in urban green space.

ABSTRACT: The mechanism of biochar and compost as soil amendments in urban green spaces remains unclear. Using Euonymus kiautschovicus as a model system, this study established eight treatment gradients, 0 (CK), single biochar applications: 4% (BC4), 8% (BC8), 12% (BC12), 7.5% compost (COM), and their combinations BCC4 (BC4 + 7.5% COM), BCC8 (BC8 + 7.5% COM), BCC12 (BC12 + 7.5% COM). Through metagenomic sequencing and metagenome-assembled genomes (MAGs) analysis, we investigated soil microbiome structure, carbon sequestration functional genes, and their interactions in response to amendments. The combined application of medium-low dose biochar (4-8%) with compost significantly optimized the physicochemical properties and microbial functions in soils. Compared to single amendments, hybrid trea

SUBMITTER: Wang B 

PROVIDER: S-EPMC12631617 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature