Bio-indicating function of soil protozoa to environmental pollution
土壤原生动物对环境污染的生物指示作用

Due to the abundant species and huge biomass,soil protozoa play an important role in soil ecosystem.As a bio-indicator,soil protozoa have many advantages over other soil animals.Studies on the community structures,quantities,and dynamic variations of biodiversity of soil protozoa could provide powerful means to evaluate natural environmental changes and to monitor the environmental pollution brought by anthropic activities.Based on the current study at home and abroad,this paper gave a review on the function of soil protozoa in ecosystems,their advantages as bio-indicator,and their responses to environmental factors,soil contaminants and the change of atmospheric CO 2 .The application prospect of soil protozoa in eco-toxicity diagnosis was also discussed.