Quantitative Assessment of Nitrogen Application Effects on Coupling Mechanisms Between Soil Microbial Diversity and Agroecosystem Multifunctionality

Through field experiments conducted from 2023 to 2024, this study investigated the response relationships of microbial community structure to matter accumulation, soil environmental factors, and agroecosystem multifunctionality under different nitrogen application rates. It further elucidated the influence patterns of dominant microbial species in different spatial positions on ecosystem multifunctionality. Results demonstrated that optimal nitrogen application (N240) significantly enhanced dry matter accumulation and translocation efficiency, improving the translocation of assimilates from vegetative organs to grains.