This study examines the phosphorus speciation changes in the sediments of Nansi Lake's water-level-fluctuating zone under varying frequencies of wet-dry conditions and their relationship with microbial community structures,providing technical support for maintaining the aquatic ecosystem health and water quality of Nansi Lake.High-throughput sequencing technology is utilized to analyze the changes in the sediment's microbial community characteristics.The analysis of physical and chemical properties of sediments in the water-level-fluctuating zone showed that total phosphorus(TP)and inorganic phosphorus(IP)in sediment decreased,organophosphorus(OP)kept stable in the dry-wet process;Although the microbial community structure remained relatively stable,significant changes in community abundance were observed;High-frequent dry-wet alternation is not favor to diversity of microorganism in water-level-fluctuating zone;Notably,Cyanobacteria and Verrucomicrobiota exhibits a significant negative correlation with NaOH-P in the sediment,whereas Proteobacteria shows a positive correlation with TP.
关键词
消落带/南四湖/微生物群落结构/干湿交替
Key words
water-level-fluctuating zone/Nansi Lake/microorganism community structure/dry-wet alternation
维普
万方数据