The selenium-rich area of the Tibetan Plateau is located in Qinghai Province, China, at an altitude of 2200-2500 m, with selenium content exceeding 0.3 mg/kg. This study focused on the soil selenium content, physicochemical parameters, and microbial communities of selenium-rich soils in the Ping'an selenium-rich area, as part of the Tibetan Plateau. The results showed that the total selenium contents in both the Ping'an and Guide areas were significantly higher than in the control, ranging from 624.56 µg/kg to 727.48 µg/kg in Ping'an and reaching 721.74 µg/kg in Guide. Correlation analysis revealed that organic selenium content was significantly positively correlated with total phosphorus (p p p Arthrobacter crystallopoietes (p Nitrosospira briensis (p Rhodobacteraceae (p Tepidisphaera mucosa (p Tausonia pullulans (p Botryotrichum domesticum (p Preussia flanaganii (p Enterocarpus grenotii (p < 0.01). RDA analysis showed that total phosphorus contributed the most (27.30%), followed by total potassium (21.70%) and total nitrogen (14.86%). The findings provide a scientific basis for understanding soil physicochemical properties and microbial diversity in plateau selenium-rich regions and lay a foundation for the isolation and utilization of dominant microbial species in these soils.
Wang et al. (Wed,) studied this question.