Li Jingjing, Zhang Qian, Chen Yitong, Diao Mengmeng, Yang Chao, Jia Wenke
College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China.
Shandong Key Laboratory for Germplasm Innovation of Saline-Alkaline Tolerant Grasses and Trees, Qingdao 266109, China.
Microorganisms. 2025 Apr 13;13(4):894. doi: 10.3390/microorganisms13040894.
is widely distributed and is the dominant plant species of temperate degraded grassland in Inner Mongolia, showing a community growing habit forming a ring of individuals. However, there is a lack of attention to the soil microbial communities inside the ring (IN), outside the ring, and under the ring (UN). This study investigated the soil bacterial community composition in three different zones of the ring using amplicon sequencing technology, as well as soil environmental variables. The soil physicochemical properties, the composition of soil bacterial community, and the soil bacterial α-diversity varied significantly among the three zones. Especially, the growth of promotes the soil bacterial diversity in the UN zone due to the interactions between plant and soil microbes. Soil NO-N, TC, TN, and pH are the key factors causing the variations of soil bacterial community composition and bacterial diversity. Proteobacteria and Actinobacteria phyla of microorganisms accounted for the largest proportion in network analysis among the three zones. Overall, attention should be paid not only to the improvement of grassland vegetation and soil quality but also to the change in soil microorganisms during the formation and expansion of the ring in the future.
广泛分布，是内蒙古温带退化草原的优势植物物种，呈现出形成个体环的群落生长习性。然而，对于环内（IN）、环外和环下（UN）的土壤微生物群落缺乏关注。本研究利用扩增子测序技术以及土壤环境变量，调查了环的三个不同区域的土壤细菌群落组成。三个区域的土壤理化性质、土壤细菌群落组成和土壤细菌α多样性存在显著差异。特别是，由于植物与土壤微生物之间的相互作用，促进了UN区域的土壤细菌多样性。土壤硝态氮、总碳、总氮和pH是导致土壤细菌群落组成和细菌多样性变化的关键因素。在三个区域的网络分析中，变形菌门和放线菌门的微生物占比最大。总体而言，未来在环的形成和扩张过程中，不仅应关注草地植被和土壤质量的改善，还应关注土壤微生物的变化。
