Influence of Intraspecific Competition Stress on Soil Fungal Diversity and Composition in Relation to Tree Growth and Soil Fertility in Sub-Tropical Soils under Chinese Fir Monoculture

Soil microorganisms provide valuable ecosystem services, such as nutrient cycling, soil remediation, and biotic abiotic stress resistance. There is increasing interest in exploring total belowground biodiversity across ecological scales to understand better how different aspects, stand density, properties, depth, plant growth parameters, influence communities. In various environments, microbial components of communities, fungi, respond differently features; however, little known about their response standing density vertical profiles a Chinese fir monoculture plantation. This research examined the assemblage fungal communities stands (high, intermediate, low) depth (0–20 cm 20–40 cm). also looked into relationship between fungi tree canopy characteristics (mean tilt angle leaf (MTA), area index (LAI), openness (DIFN)), general diameter, height, biomass. The results showed that low-density had higher alpha diversity than intermediate- high-density soils. Ascomycota, Basidiomycota, Mucromycota, Mortierellomycota were most common phyla order. Saitozyma, Penicillium, Umbelopsis, Talaromyces abundant genera. Stand composition was dominant factor changing community structure compared properties profiles. significant elements alterations macronutrients. addition, have positive association stand. biota cycling driver can promote forest ecosystems by supporting cycling. Hence, this will be critical understanding dynamics, improving productivity, quality intensively managed plantations.