西北林学院学报2024，Vol.39Issue(5)：176-186,11.DOI:10.3969/j.issn.1001-7461.2024.05.22
蜀山城市森林公园主要林分的土壤细菌群落特征及其影响因素
Soil Bacterial Community Characteristics and Influencing Factors in the Major Forest Stands of Shushan Urban Forest Park
摘要
Abstract
Based on the urban forest ecosystem in the transition zone between the warm temperate zone and subtropical zone with frequent human activities,taking"Shushan Urban Forest Park"as the research ob-ject,this study systematically analyzed the interaction mechanism between"vegetation-soil-bacteria"from the perspective of quantitative ecology.High-throughput sequencing technology was used to comprehen-sively analyze the diversity of soil bacterial communities in green spaces of suburb forests,and to clarify the dominant influencing factors of soil bacterial community structure in urban forests.The results showed that plantation forests generally exhibited lower soil pH,water content,organic carbon and nutrient content compared to secondary forests,suggesting that plantation forestry and human activities accelerate soil acid-ification.Significant differences were found in soil ammonium nitrogen(AN)and dissolved organic carbon(DOC)between secondary forests and planted forests.The total number of soil bacterial OTUs was lower in plantation forests,and the alpha diversity indices(S1 index,H'index)of the soils of Pinus massoniana and Quercus acutissima forests were significantly different from those of secondary forests.The dominant bacterial phyla were Acidobacteria,Proteobacteria,and Actinobacteria,with higher relative abundance of Acidobacteria and Proteobacteria in secondary forests compared to plantation forests,and lower relative abundance of Actinobacteria compared to P.massoniana forests and Q.acutissima forests.The relative abundance of Chloroflexi phylum was lower in secondary forests compared to plantation forests,whereas the relative abundance of Gemmatimonadetes was higher in Q.acutissima forests compared to other for-ests.Soil pH,AN and DOC were identified as the main physicochemical factors influencing the distribution pattern of bacterial communities.This study reveals the correlation between above-ground vegetation indi-cators and below-ground soil physicochemical characteristics and bacterial diversity indicators.关键词
城市森林/人工林/次生林/土壤理化性质/细菌群落特征Key words
urban forest/plantation forest/secondary forest/soil physicochemical properties/bacterial com-munity characterization分类
农业科技引用本文复制引用
王敉敉,崔珺,滕臻..蜀山城市森林公园主要林分的土壤细菌群落特征及其影响因素[J].西北林学院学报,2024,39(5):176-186,11.基金项目
国家自然科学基金项目"不同林龄序列亚热带常绿阔叶林地下碳氮耦合循环特点"(31370626) （31370626）
安徽省高校省级自然科学研究重点项目"生态修复大背景下基于3S技术的合肥环巢湖湿地公园的景观格局变化研究"(KJ2021A0614) （KJ2021A0614）
(24年国库基本科研)新引进高层次人才科研启动费项目(SC1032410380140). （24年国库基本科研）
