生态学报2023，Vol.43Issue(24)：10092-10103,12.DOI:10.20103/j.stxb.202305050938
华北退化荒地建植豆类和禾本植物人工草地对土壤真菌群落结构和功能的影响
Effects of artificial grassland establishment via legume and grass plants on the structure and function of soil fungal community in a degraded wasteland of Northern China
摘要
Abstract
Elucidating the changes in soil fungal communities and their ecological functions during vegetation restoration is an important reference value for developing scientific and effective management measures of the degraded ecosystems.This study aims to reveal the effects of artificial grassland establishment via legume and grass plants on the structure and functional groups of soil fungal community in a degraded wasteland of Northern China.Using high-throughput amplicon sequencing and bioinformatics analysis,the differences of soil fungal community structure and functional group characteristics in natural restoration(control group,CK)and artificial grassland establishment via legume and grass plants(LG and GG treatments,respectively)of degraded wasteland in Yanqing county,Beijing were analyzed.The results showed that:(1)6315 operational taxonomic units(OTUs)were collected from soil surface samples of the degraded wasteland,belonging to 17 phyla,60 classes,145 orders,347 families,and 896 genera.The dominant phyla were Ascomycetes,Mortierellomycota and Basidiomycetes,and they accounted for 73.3％-99.6％of the total amount of soil fungi from each samples.The relative abundance of Ascomycetes and Basidiomycota presented opposite patterns of change in each treatment sample.Compared with CK,the relative abundance of Basidiomycetes in LG treatment was remarkably higher than that in CK.The relative abundance of soil nutrient indicator taxa Mortierellomycota in GG treatment was remarkably higher than that in CK,and this coincided with the fact that soil nutrients in GG treatment was highest among all treatments.The number of soil fungal biomarkers in the samples treated by LG was the highest.(2)Prediction of microbial functional groups based on FUNGuild software was conducted,and saprophytic fungi was the main functional group of soil fungi,followed by symbiotic fungi,and pathogenic fungi accounted for the least proportion.Compared with pathogenic fungi,the establishment of artificial grassland had more obvious influence on the functional group composition of saprophytic fungi and symbiotic fungi,and led to the increase in the relative abundance of saprophytic fungi and decrease in the relative abundance of symbiotic fungi.(3)Soil fungal community structure was significantly(P＜0.05)affected by vegetation parameters such as plant species richness and root biomass,and significantly(P＜0.05)correlated with soil nutrients such as soil organic carbon,total nitrogen,available nitrogen,and total phosphorus.The results were helpful to understand the influence of artificial grassland on the structure and function of soil fungal community,and provided theoretical basis for vegetation restoration strategy of the degraded wasteland in Northern China.关键词
植被恢复策略/人工草地建植/真菌群落结构/退化荒地/真菌功能群Key words
vegetation restoration strategy/artificial grassland establishment/fungal community structure/degraded wasteland/fungal functional groups引用本文复制引用
阚海明,陈超,马晓东,徐恒康,庞卓,张国芳,武菊英..华北退化荒地建植豆类和禾本植物人工草地对土壤真菌群落结构和功能的影响[J].生态学报,2023,43(24):10092-10103,12.基金项目
北京市农林科学院院创新能力建设专项(KJCX20230305,QNJJ202333,KJCX20230220) （KJCX20230305,QNJJ202333,KJCX20230220）
