HONG Xiaosong,LIU Xing,LIU Yuan,et al.Response of Soil Microbial Community Structure to Environment Under Different Vegetation Types in the Liao River Estuary Saline-alkali Lands[J].Northern Horticulture,2026,(12):108-115.[doi:10.11937/bfyy.20254248]
辽河口盐碱地不同植被类型土壤微生物群落结构与环境的响应
- Title:
- Response of Soil Microbial Community Structure to Environment Under Different Vegetation Types in the Liao River Estuary Saline-alkali Lands
- 文章编号:
- 1001-0009(2026)12-0108-08
- 分类号:
- S154.3
- 文献标志码:
- A
- 摘要:
- 以辽河口区域4种典型盐碱地（碱蓬地、芦苇地、滨海稻田地和草甸地）为试材，采用16S rDNA和18S/ITS rDNA扩增子测序方法，对不同土层深度（0~2、2~10、10~20 cm）的土壤样本进行分析，评估微生物群落差异及显著性，并测定土壤含盐量和pH，研究了微生物群落结构及多样性与土壤环境因子的响应关系，以期揭示盐碱地微生物的分布规律及其生态功能。结果表明：碱蓬地土壤含盐量随土层深度增加而递增，pH递减，芦苇地含盐量随深度增加而pH相对稳定；碱蓬地中变形菌门、拟杆菌门和脱硫杆菌门丰度较高，沃氏菌属、海洋杆菌属和吉利西菌属表现出显著差异；碱蓬地和芦苇地微生物多样性较低，酸杆菌门和绿弯菌门在芦苇地和稻田地更为常见；变形菌门和拟杆菌门与高pH和高盐环境呈正相关，酸杆菌门和绿弯菌门则偏好低pH或低盐环境。
- Abstract:
- Taking four typical saline-alkali land types in the Liao river Estuary region-Suaeda salsa land,Phragmites marsh,coastal rice paddy field,and meadow as the test materials,soil samples from different depths (0-2,2-10 cm and 10-20 cm) were analyzed by using 16S rDNA and 18S/ITS rDNA amplicon sequencing.Microbial community differences and their statistical significance were evaluated,and soil salinity and pH were measured.The relationships between microbial community structure,diversity,and soil environmental factors were investigated to reveal the distribution patterns and ecological functions of microorganisms in saline-alkali soils.The results showed that in the Suaeda salsa land,soil salinity increased with soil depth while pH decreased.In the Phragmites marsh,soil salinity increased with depth whereas pH remained relatively stable.The phyla Proteobacteria,Bacteroidetes,and Desulfobacterota were more abundant in the Suaeda salsa land,and the genera Woeseia,Marinobacter,and Gillisia showed significant differences.Microbial diversity was relatively lower in the Suaeda salsa land and Phragmites marsh,while Acidobacteria and Chloroflexi were more common in the Phragmites marsh and rice paddy field.Proteobacteria and Bacteroidetes were positively correlated with high pH and high salinity environments,whereas Acidobacteria and Chloroflexi tended to prefer soils with lower pH or lower salinity.
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备注/Memo
第一作者简介：洪晓松（1990-），男，硕士，助理研究员，现主要从事耐盐碱植物选育等研究工作。E-mail:765574325@qq.com.基金项目：辽宁省农业科学院院长基金资助项目（2025JCX1009）。收稿日期：2025-12-10