庐山国家级自然保护区森林土壤细菌群落特征研究
收稿日期: 2019-10-24
修回日期: 2019-11-21
网络出版日期: 2020-05-09
基金资助
湖北省教育厅科研计划项目(青年项目);高级别培育项目(黄冈师范学院);科技部引智项目(GS20190157002)
A Study on Community Characteristics of Forest Soil Bacteria in Lushan National Nature Reserve
Received date: 2019-10-24
Revised date: 2019-11-21
Online published: 2020-05-09
利用高通量测序技术分析了庐山国家级自然保护区不同海拔梯度典型森林土壤细菌群落特征。测序结果表明,酸杆菌门(53.84%)是庐山国家级自然保护区森林土壤平均相对丰度最高的门,其次为变形菌门(30.15%)和放线菌门(7.36%),而拟杆菌门及绿弯菌门所占比例较少(0.64%和0.28%);Ellin6513菌是第一大目分类水平细菌群落。从山麓到山顶空间位置相近的土壤细菌群落结构具有更大的相似性,不同海拔植被带土壤细菌群落多样性沿海拔梯度并没有表现出一定的变化趋势。在土壤化学指标中,与庐山森林土壤细菌群落相关性较大的是有机碳和总氮含量。
冯晓川 , 曹新光 , 居文华 , 刘凯妹 . 庐山国家级自然保护区森林土壤细菌群落特征研究[J]. 林草资源研究, 2019 , 0(6) : 101 -107 . DOI: 10.13466/j.cnki.lyzygl.2019.06.018
Soil microbe is ecologically important contributor to various functioning of forest ecosystems.Because of the elevation gradient,subtropical mountainous forests are a complex ecosystem where the nutrient availability and soil conditions vary with elevation levels.Therefore,the subtropical mountainous forests provide aunique opportunity to study the relationship between forest microbial communities and multiple environmental factors.In this study,we present a comprehensive analysis of soil bacterial community composition and diversity along six elevations representing six typical vegetation types in a subtropical mountainous forest at the Lushan,China.A total of 24 phyla,49 classes and 62 orders were confirmed with the method of high-throughput sequencing technology.At the phylum level,the dominant phyla were Acidobacteria(53.84%),Proteobacteria(30.15%)and Actinobacteria(7.36%);other phyla,such as Bacteroidetes and Chloroflexi(0.64% and 0.28%),were much less abundant.Ellin 6513 was the most abundant order in soil bacterial community.The composition and diversity of bacterial communities did not show a certain trend across an elevation gradient from low via medium to high.Among the soil chemical indexes,the organic carbon and total mitrogen confent are more relevent to the soil bacterial community in the Lushan forest.
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