Table of OTUs in Different Saline-Alkali Soils After Exposure to Microplastic Pollution at Various Concentrations

This OTU table was derived from 16S rRNA high-throughput sequencing of alkaline soil samples contaminated with polyethylene microplastics (PE MPs) across varying salinity-alkalinity gradients. The dataset comprises five salinity-alkalinity levels (S1–S5, in increasing order) and three microplastic treatment levels: CK (0% PE MPs), T1 (1% PE MPs), and T2 (5% PE MPs). Preliminary analysis indicates that following the addition of PE MPs, species richness and diversity indices initially decreased and then increased as salinity-alkalinity levels rose. This table is available for other researchers to conduct Alpha/Beta diversity comparisons, Linear Discriminant Analysis Effect Size (LEfSe) for differential species analysis, and functional gene prediction, aiming to further elucidate the ecological risks of combined pollutants in extreme soil environments.