南京林业大学学报（自然科学版）2026，Vol.50Issue(1)：50-57,8.DOI:10.12302/j.issn.1000-2006.202504004
芒草对盐碱地土壤理化特性和微生物群落组成的影响
Effects of Miscanthus on soil physicochemical characteristics and microbial community composition in saline-alkali soil
摘要
Abstract
[Objective]To investigate the effects of planting different Miscanthus species on the physicochemical properties of saline-alkali soil and the composition and structure of the microbial community,thus providing a basis for selecting suitable Miscanthus species for ecological restoration of saline-alkali land.[Method]Rhizosphere soil,non-rhizosphere soil,and bare land(CK)soil samples were collected from the planting sites of five Miscanthus species:Miscanthus sinensis,Miscanthus sacchariflorus,Miscanthus floridulus,Miscanthus lutarioriparius,and Miscanthus × longiberbis.Soil physicochemical properties were measured,and high-throughput sequencing technology was employed to analyze the composition of the soil microbial community.[Result]Compared with bare land soil,planting Miscanthus significantly improved the soil environment:soil water content increased in the planting sites of all five Miscanthus species,with a significant increase of 40.4％in the Miscanthus sinensis planting site.Soil pH and total salt content decreased,with a 2.6％reduction in pH in the M.× longiberbis planting site compared to CK,and a significant 83.9％reduction in total salt content in the M.sacchariflorus planting site.The contents of organic carbon,total nitrogen,and available phosphorus increased.While no significant differences were observed in microbial community α diversity,the community composition and structure underwent significant changes,with Pseudomonadota being the dominant phylum.The relative abundances of Acidobacteriota,Actinobacteriota,and Chloroflexota significantly increased,whereas those of Gemmatimonadota and Cyanobacteria significantly decreased.[Conclusion]Planting Miscanthus effectively ameliorates the physicochemical properties of saline-alkali soil,enhances soil fertility,and optimizes microbial community structure.Among the tested species,M.sacchariflorus exhibited the best overall improvement effects.The findings of this study provide a theoretical basis and practical guidance for selecting Miscanthus species in the ecological restoration of saline-alkali land.关键词
芒草/盐碱地/土壤理化性质/微生物群落组成Key words
Miscanthus spp./saline land/soil physical and chemical properties/microbial community composition分类
生物科学引用本文复制引用
张哲,宗俊勤,李玲,陆海龙,薛建辉..芒草对盐碱地土壤理化特性和微生物群落组成的影响[J].南京林业大学学报（自然科学版）,2026,50(1):50-57,8.基金项目
江苏省林业科技创新与推广"揭榜挂帅"项目(LYKJ[2022]02). （LYKJ[2022]02）
