水土保持研究2025，Vol.32Issue(4)：92-99,8.DOI:10.13869/j.cnki.rswc.2025.04.044
不同植被恢复措施对中国南方侵蚀地区土壤固碳功能菌的影响
Effects of different vegetation restoration measures on soil carbon sequestration functional bacteria in eroded areas of South China
摘要
Abstract
[Objective]This study aims to explore the patterns of change in soil carbon sequestration functional bacteria during vegetation restoration in eroded areas,providing a scientific basis for accurately estimating the microbial carbon sequestration potential of global terrestrial ecosystems.[Methods]Sample plots were selected in severely eroded areas of Changting County,with three vegetation restoration measures(small-hole grass sowing,contour grass-shrub strips,and grass-shrub-tree mixed planting)as experimental treatments,and untreated sample plots as the control.Fluorescent quantitative PCR and cbbL high-throughput sequencing were used to analyze the effects of vegetation restoration on soil carbon sequestration bacterial communities.[Results]Compared with the untreated plots,the vegetation restoration plots exhibited a higher abundance of carbon sequestration functional bacteria and a greater diversity of carbon sequestration bacterial communities.Specifically,in the small-hole grass sowing and the contour grass-shrub strips,the abundance of carbon sequestration bacteria increased significantly by 149.71 times and 225.61 times,respectively,compared to the untreated plots.The Shannon index of carbon sequestration bacteria in the small-hole grass sowing,contour grass-shrub strips,and grass-shrub-tree mixed planting plots increased significantly by 33.52%,26.61%,and 54.18%,respectively,compared to the untreated plots.Vegetation restoration measures also changed the composition of the carbon sequestration bacterial communities by increasing the total soil organic carbon content(48.30%,p=0.002).In addition,all three vegetation restoration measures shifted the dominant carbon sequestration bacteria in the eroded areas from Rhodovastum to Nocardia.[Conclusion]Vegetation restoration significantly improves soil fertility in eroded areas and has a positive impact on the soil carbon sequestration functional bacterial communities.关键词
退化土壤/微生物固碳/cbbL基因/总有机碳Key words
degraded soil/microbial carbon sequestration/cbbL gene/total organic carbon分类
农业科技引用本文复制引用
颜华玲,林根根,杨乔乔,谭泽创,王晓朋,张越,蒋芳市,林金石..不同植被恢复措施对中国南方侵蚀地区土壤固碳功能菌的影响[J].水土保持研究,2025,32(4):92-99,8.基金项目
福建省水利科技专项(KJG21009A) （KJG21009A）
水利部重大科技专项(SKS2022073) （SKS2022073）
