云南勐库古茶园重金属分布与微生物生态特征

Distribution of Heavy Metals and Microbial Ecological Characteristics in the Ancient Tea Garden in Mengku,Yunnan

文章通过ICP-AES和土壤细菌群落结构测序技术探讨了云南勐库古茶园土壤中重金属的分布及其对微生物生态的作用,并揭示了古茶园土壤中重金属的富集情况及其对微生物群落结构的显著影响。研究表明,Cr、Cu、Sn、Hg等重金属元素在茶园土壤中富集,而Mo、Pb等重金属元素亏损。重金属元素的富集不仅降低了微生物的生物量和种群数量,还影响到了微生物群落的结构化和多样性。土壤中的优势门类细菌,如酸杆菌门等,与多数重金属元素呈负相关关系,对茶树具有积极的作用,可降解重金属毒性。

The paper explored the distribution of heavy metals in the soil of the ancient tea garden in Mengku,Yunnan,and their effects on microbial ecology using ICP-AES and sequencing technology for soil bacterial community structure,and revealed the enrichment of heavy metals in the ancient tea garden soil and the significant impact of theses heavy metals on the microbial community structure.The results showed that heavy metal elements such as Cr,Cu,Sn,and Hg were enriched in the tea garden soil,while Mo and Pb were depleted.The enrichment of heavy metal elements not only reduced the biomass and population of microorganisms,but also affected the structure and diversity of the microbial community.The dominant bacteria in the soil,such as Acidobacteria,showed a negative correlation with most heavy metal elements,and had a positive effect on tea trees,such as degrading heavy metal toxicity.