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佳乐麝香和镉复合污染对土壤中细菌和真菌数量的影响

律泽1,2,胡筱敏1**,魏炜3,安婧2,纪占华2   

  1. (1东北大学资源与土木工程学院, 沈阳 110004; 2 中国科学院沈阳应用生态研究所污染生态与环境工程重点实验室, 沈阳 110016; 3沈阳建筑大学市政与环境工程学院, 沈阳 110168)
  • 出版日期:2014-08-10 发布日期:2014-08-10

Joint effects of galaxolide and cadmium on bacteria and fungi quantities in soil.

LU Ze1,2, HU Xiao-min1**, WEI Wei3, AN Jing2, JI Zhan-hua2   

  1. (1School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China; 2Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 3 School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China)
  • Online:2014-08-10 Published:2014-08-10

摘要:

在实验室模拟条件下,研究佳乐麝香(HHCB)和Cd单一、复合污染对培养10周土壤中细菌和真菌数量的影响。结果表明:HHCB和Cd单一、复合污染对土壤细菌(单一Cd除外)和真菌数量均有显著影响(P<0.01),500、1000 mg·kg-1的HHCB和10 mg·kg-1 Cd单一、复合污染对土壤细菌数量影响先抑制后促进,100、500 mg·kg-1的HHCB和10 mg·kg-1 Cd单一、复合污染对真菌生长有促进作用。随着HHCB浓度的增加,第5~10周,土壤细菌抑制率减少;第1~10周,土壤真菌抑制率增加(单一HHCB污染第1、4和6周以及复合污染第4和10周除外)。复合污染对细菌联合效应在第1周表现为协同作用,对真菌联合效应在第7~8周表现为拮抗作用。

 

关键词: ABC曲线, 环境因子, 大鲵, 生境评价, 大型无脊椎动物

Abstract: Single and joint effects of galaxolide (HHCB) and Cd on bacteria and fungi quantities in the soil incubated 10 weeks were investigated in the laboratory. The results showed that single and joint exposures of HHCB and Cd had significant impacts on bacteria and fungi quantities
(P<0.01), except for Cd on bacteria. The growth of bacteria was inhibited firstly but promoted later after the applications of 500, 1000 mg·kg-1 HHCB and 10 mg·kg-1 Cd singly and jointly. However, the single and joint exposures of 100, 500 mg·kg-1 HHCB and 10 mg·kg-1 Cd promoted the growth of fungi. With the increase of HHCB concentration, the rate of inhibition decreased for bacteria during the 5th to 10th week, while increased for fungi during the 1st to 10th week except for single HHCB in the 1st, 4th and 10th weeks as well as joint pollution in the 4th and 10th weeks. It was suggested that the joint effects of compound pollution were synergistic on bacteria in the 1st week, but antagonistic on fungi from the 7th to 8th week.

Key words: macroinvertebrate, ABC curve, Andrias davidianus, environmental factors, habitat evaluation