生物资源2025，Vol.47Issue(2)：129-140,12.DOI:10.14188/j.ajsh.20250210001
麦地卡高寒湿地退化对其土壤微生物群落结构的影响
Impact of degradation in Maidika alpine wetland on its soil microbial community structure
摘要
Abstract
Wetland degradation is one of the consequences of global warming,and wetland degradation is accompa-nied by changes in wetland ecosystems and biome structure.However,there are few studies on the effects of alpine wet-land degradation on soil microbial communities.In this study,soil samples were collected from six sites with different degradation degrees in Maidika wetland,Xizang,and the microbial community structure and diversity in different soil samples were analyzed by high-throughput sequencing.The results showed that with the increase of wetland degradation,the water content,total carbon and nitrate nitrogen content in soil decreased significantly,while the ammonium nitrogen content increased significantly.Although degraded ponds and meadows in wetlands showed different trends in microbial di-versity changes,both were negatively correlated with variations of salinity and pH.With the degradation of wetlands,the abundance of bacterial phyla Desulfobacterota and Planctomycetota,as well as fungal phyla Ascomycota and Chytridiomy-cota,decreased,while the abundance of bacterial phyla Acidobacteria,Cyanobacteria,Rhizobiales order and Chloroflexi phylum,increased.With the degradation of wetlands,the relative abundance of human and animal pathogens(bacteria and fungi)decreased significantly,while the abundance of photoautotrophic bacteria,plant pathogenic fungi,and lichen symbiotic fungi showed an increasing trend.This study investigates microbial diversity trends during the degradation of the Maidica wetland in Xizang to provide foundational data for predicting potential ecological and biosafety implications of microbial community changes in degrading alpine wetlands.关键词
湿地/土壤微生物/多样性/高通量测序Key words
wetland/soil microorganisms/diversity/high-throughput sequencing分类
生物科学引用本文复制引用
扎西曲措,杨晶晶,刘振宇,彭晓娅,杨超越,彭方..麦地卡高寒湿地退化对其土壤微生物群落结构的影响[J].生物资源,2025,47(2):129-140,12.基金项目
国家科技基础资源调查计划(2021FY100900) （2021FY100900）
国家科技部研发基础设施和设施发展计划(NIMR-2024-8) （NIMR-2024-8）
国家自然科学基金(42076230) （42076230）
