Effects of Cadmium Stress on Microbial Community Diversity in Soil Potted With Sasa Argenteastriatus

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Yin, Peng^1^2 ; Liu, Xiaojie^1^2 ; Liao, Jinhua^1 ; Hu, Xia^1^2

Bamboo Diseases and Pests Control and Resources Development, Key Laboratory of Sichuan Province, Leshan Normal University, Leshan

614004, China^1

College of Life Science, Leshan Normal University, Leshan

614004, China^2

关键词: Bacterial community;    Contaminated soils;    Growth and development;    Heavy metal pollution;    Microbial communities;    Soil microbial biomass;    Soil microbial biomass carbons;    Soil microbial community structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/5/052051/pdf
DOI  :  10.1088/1755-1315/300/5/052051

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to understand the remediation mechanism of cadmium-contaminated soils, pot experiments were conducted to study the effects of cadmium stress on soil microbial biomass and soil microbial diversity in Sasa argenteastriatus plantations. The results showed that Cd stress significantly changed the characteristics of soil microbial biomass carbon content, and the level of soil microbial biomass carbon was higher than that of the control when under 0.5mg/kg Cd stress. Heavy metals significantly inhibited soil microbial biomass carbon at higher concentrations of cadmium ( > 5 mg/kg). Cadmium pollution significantly changed the structure of bacterial communities and promoted the growth and development of some tolerant bacterial species (hongkongensis and ovatus) at a low level of cadmium stress of 0.5mg/kg. High concentrations of cadmium caused stress that significantly inhibited the growth of Baclicus thermoamylovorans and Baclicus foraminis. These preliminary results reveal the response of soil microbial community structure to heavy metal pollution, and provide a theoretical reference for early warnings of trends in soil quality changes.