土壤原生动物对环境污染的生物指示作用

Bio-indicating function of soil protozoa to environmental pollution

土壤原生动物具有丰富的种类和巨大的生物量 ,在土壤生态系统中具有十分重要的地位 .作为指示生物 ,土壤原生动物具有与其他土壤动物相比更独特的优势 .研究它们的群落结构、数量及多样性动态变化 ,可以很好地评价和监测自然环境变化及人类活动带来的环境污染 .本文根据国内外相关文献 ,简要概述了土壤原生动物在生态系统中的作用 .对原生动物的生物指示物优势、土壤原生动物对环境因子响应和污染指示作用及对大气CO2 浓度变化的响应等进行了论述 ,并对土壤原生动物在生态毒理诊断中的应用前景进行了展望 .

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.