期刊论文

中文

土壤通报

0564-3945

2016

47

5

1148-1153

10.19336/j.cnki.trtb.2016.05.20

2015JJ4012:湖南省自然科学基金 2016JJ4015:湖南省自然科学基金 15B045:湖南省教育厅优秀青年项目

本校为第一机构

为探讨Cd污染胁迫与洞庭湖湿地土壤微生物学特性之间的内在关系,通过野外土样采集和室内模拟胁迫相结合的方法,研究Cd污染胁迫对洞庭湖湿地土壤微生物数量和微生物活性的影响。结果表明,当Cd胁迫浓度为3 mg kg~(-1)时对洞庭湖湿地土壤细菌、微生物总数及土壤微生物生物量碳(SMBC)刺激作用显著,当Cd胁迫浓度为6 mg kg~(-1)时对真菌有显著的刺激作用,而对细菌、放线菌、微生物总数及微生物生物量氮(SMBN)均表现出抑制作用,且随Cd胁迫浓度的进一步增加对细菌、真菌、放线菌、微生物总数及SMBC、SMBN的抑制作用增强;土壤脲酶、蔗糖酶、过氧化氢酶、磷酸酶和脱氢酶活性随Cd胁迫浓度的增加而降低;土壤...

To explore the inner relationship between cadmium stress and microbial properties in Dongting lake wetland soil, effects of cadmium stress on microbial quantity and activity in Dongting lake wetland soil were studied by collecting soil samples from the field and simulation stress in the laboratory. The results indicated that the number of bacteria, the total number of microorganisms and the content of soil microbial biomass carbon (SMBC) increased remarkably under 3 mg kg~(-1) cadmium concentration stress. When cadmium stress concentration was 6 mg kg~(-1), the number of fungi increased signif...