生态学报2018，Vol.38Issue(11)：3859-3867,9.DOI:10.5846/stxb201707251333
黄河三角洲刺槐白蜡混交对土壤细菌群落结构及多样性的影响
Effects of a mixed plantation of Robinia pseudoacacia and Fraxinus velutina on soil bacterial structure and diversity in the Yellow River Delta
摘要
Abstract
In order to investigate the effects of a mixed plantation of Robinia pseudoacacia and Fraxinus velutina on soil bacterial structure and diversity in the Yellow River Delta,the soil bacterial community structure and diversity in pure and mixed plantations of Robinia pseudoacacia and Fraxinus velutina were analyzed using high-throughput sequencing technology.The results showed the following:there were 36 phyla of bacterial communities in pure and mixed plantations of R.pseudoacacia and F.velutina.Acidobacteria,Proteobacteria,and Actinobacteria were the dominant bacterial taxa for the two pure forests and the mixed forest,each with a relative abundance of more than 10％,and Nitrospirae was the dominant bacterial taxon for R.pseudoacacia.The relative abundance of bacteria in the mixed plantation of R.pseudoacacia and F.velutina were significantly different from those in the pure plantations.Among these three plantation types,observed species (1934.5),Chao 1 index (2629.l),and Shannon index (9.1) were highest in the mixed forests.There was a significant positive correlations (0.995 *) between soil water content and the quantity of Actinobacteria.Soil pH had a very significant positive correlation (0.999") with the quantity of Gemmatimonadetes,and a very significant negative correlation (-0.909) with the quantity of Acidobacteria.Soil bacterial diversity showed a very significant positive correlation with soil water content,and a very significant negative correlation with soil available K.The results showed differences in structure and diversity of the soil bacterial community between the pure and mixed stands of R.pseudoacacia and F.velutina.Having changed the structure of bacterial community and increased bacterial diversity,the mixed plantation of R.pseudoacacia and F.velutina had differences in structure and diversity of the soil bacterial community from the two pure forests.关键词
高通量测序/黄河三角洲/混交林/土壤细菌/结构/多样性Key words
Illumina MiSeq/Yellow River Delta/mixed forest/soil bacterial/community structure/bacterial diversity引用本文复制引用
黄雅丽,田琪,秦光华,安然,马风云,敬如岩,陈博杰..黄河三角洲刺槐白蜡混交对土壤细菌群落结构及多样性的影响[J].生态学报,2018,38(11):3859-3867,9.基金项目
国家林业局948项目(2013-4-83) （2013-4-83）
盐碱地林业生态功能提升关键技术(2017CXGC0316) （2017CXGC0316）
国家自然科学基金项目(30970499) （30970499）
