Processed bacterial and fungal ASV abundance and taxonomic annotation data across fire-severity and post-fire recovery gradients

This dataset contains processed bacterial 16S rRNA gene and fungal ITS amplicon data generated from surface soil samples collected across four fire-severity classes—unburned, low, moderate, and high severity—at 1 month and 1 year after fire in a subtropical Pinus massoniana forest. The dataset includes eight ASV abundance matrices corresponding to the fire-severity × post-fire-stage combinations and a combined bacterial–fungal taxonomic annotation table from domain to species level. The data support the microbial community composition, diversity, and association-network analyses reported in the related manuscript.本数据集包含经预处理的细菌16S核糖体RNA（16S rRNA）基因与真菌内转录间隔区（Internal Transcribed Spacer，ITS）扩增子测序数据，这些数据来源于亚热带马尾松（Pinus massoniana）林火灾发生后1个月及1年时，采集自未燃烧、低、中度、高严重度4个火灾严重度等级的表层土壤样品。数据集包含8个对应火灾严重度×火灾后阶段组合的扩增子序列变异体（Amplicon Sequence Variant，ASV）丰度矩阵，以及一份覆盖从域到物种水平的细菌-真菌联合分类注释表。本数据集可为相关研究论文中报道的微生物群落组成、多样性及关联网络分析提供数据支撑。