Effects of Soil Amendments on Microbial Activities in a Typical Cd-Contaminated Purple Field Soil, Southwestern China

Wenqiang Wang, Fengwu Zhou, Yajun Chang, Jian Cui, Dongyi He, Jinmeng Du, Andy Chan, Dongrui Yao, Yong Li, Zhiyuan Chen, Khalil Kariman

Research output: Contribution to journalArticle

Abstract

In this study, three soil amendments (inorganic, liming, or organic–inorganic materials) were used in a Cd-contaminated purple field soil to investigate their impacts on soil Cd availability, enzyme (urease, catalase, sucrase, and acid phosphatase) activities, microbial biomass (carbon/nitrogen) and type (bacteria, fungi, and actinomycetes) in mustard and corn trials. Results showed that soil amendments generally decreased soil exchangeable Cd, fungi and bacterial populations while increasing the activities of all the four soil enzymes tested, microbial biomass carbon and populations of actinomycetes (p < 0.05). Soil pH and microbial biomass nitrogen did not exhibit any significant response (p > 0.05) whereas stronger effects appeared in soil organic matter and available nutrients (nitrogen, phosphorous and potassium; p < 0.05). However, only soil available phosphorous significantly correlated with soil microbial activity in both mustard and corn trails (p < 0.05). Thus, application of phosphorous-containing amendments should be considered for promoting soil health in the remediation of the Cd-contaminated purple soils.

Original languageEnglish
Pages (from-to)380-385
Number of pages6
JournalBulletin of Environmental Contamination and Toxicology
Volume104
Issue number3
DOIs
Publication statusPublished - Mar 2020

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