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黄土区沟道泥沙微生物群落变化特征及其影响因素
侯芳彬1; Salman Ali22; 高鑫1; 郭胜利1,3; 王蕊1
2019
Source Publication中国环境科学
Volume39Issue:10Pages:4350-4359
Abstract
在黄土高原沟壑区,通过 16S rRNA 基因片段和 ITS 高通量测序,研究沟道泥沙中细菌和真菌群落在上-中-下游的变化特征.结果表明:与沟头相
,把口站的细菌群落中拟杆菌门(Bacteroidetes)与厚壁菌门(Firmicutes)的相对丰度分别增加 6.6%10.5%,而变形菌门(Proteobacteria)的相对丰度降低
15.1%;真菌群落中担子菌门(Basidiomycota)的相对丰度增加 7.7%,而子囊菌门(Ascomycota)降低 30.2%;泥沙中黏粒含量与细菌丰富度(Chao1 指数)和多
样性(Shannon 指数)之间显著负相关(P<0.05),与真菌的丰富度和多样性无显著相关性;细菌和真菌群落多样性和丰富度的空间差异与 SOCOlsen-P
变化有关(P<0.05).因此,泥沙中颗粒组成物和养分含量可能是影响沟道微生物群落变化的主要因素.
Other Abstract
Sediments were collected from up- to down-stream along a valley bottom on the Loess Plateau. Physicochemical
properties of the collected sediments were measured and the characteristics of bacterial and fungal communities in the sediment
samples were also determined using the high-throughput sequencing of 16S rRNA gene fragment and ITS. From up- to down-stream
of the studied valley, the relative abundance of Bacteroidetes and Firmicutes in the collected sediments increased by 6.6% and 10.5%
respectively, and the relative abundance of Proteobacteria decreased by 15.1%. The relative abundance of Basidiomycota increased
by 7.7%, while the relative abundance of Ascomycota decreased by 30.2%. The bacterial richness (Chao1index) and diversity
(Shannon index) were negatively correlated with sediment clay content (P < 0.05), while the correlations between clay content and
fungal were not significant. The richness and diversity of bacterial and fungal communities were also correlated with sediment SOC
and Olsen-P (P < 0.05). Therefore, sediment compositions and nutrient content appeared to be a crucial factor influencing the spatial
variability of sediment microbial communities and diversity.
Keyword沟道泥沙 空间重分布 细菌 真菌 颗粒组成
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/9332
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学水土保持研究所,黄土高原土壤侵蚀与旱地农 业国家重点实验室
2.西北农林科技大学资源与环境学院
3.中国科学院、水利部水土 保持研究所
Recommended Citation
GB/T 7714
侯芳彬,Salman Ali2,高鑫,等. 黄土区沟道泥沙微生物群落变化特征及其影响因素[J]. 中国环境科学,2019,39(10):4350-4359.
APA 侯芳彬,Salman Ali2,高鑫,郭胜利,&王蕊.(2019).黄土区沟道泥沙微生物群落变化特征及其影响因素.中国环境科学,39(10),4350-4359.
MLA 侯芳彬,et al."黄土区沟道泥沙微生物群落变化特征及其影响因素".中国环境科学 39.10(2019):4350-4359.
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