Degradation of chlorpyrifos in laboratory soil and its impact on soil microbial functional diversity

查看全文 作　　者：FANG [1]Hua;YU [1]Yunlong;CHU [1]Xiaoqiang;WANG [1]Xiuguo;YANG [2]Xiaoe;YU [3]Jingquan

机构地区：[1]Department of Plant Protection, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310029, China;[2]MOE Key Lab of Environment Remediation & Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China;[3]Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China

出　　处：《Journal of Environmental Sciences》索引2009年第21卷第3期,共7页

基　　金：supported by the National Hi-Tech Research and Development Program (863) of China (No.2006AA06Z386, 2007AA06Z306);the China Postdoctor-al Science Foundation (No. 20070421174);the National Natural Science Foundation of China (No. 30771254);the Zhejiang Provincial Natural Science Foundation (No.Z306260);the National Key Technologies R&D Pro-gram of China (No. 2006BAI09B03) 摘　　要：Degradation of chlorpyrifos at different concentrations in soil and its impact on soil microbial functional diversity were investigated under laboratory condition.The degradation half-live of chlorpyrifos at levels of 4,8,and 12 mg/kg in soil were calculated to be 14.3,16.7,and 18.0 d,respectively.The Biolog study showed that the average well color development(AWCD) in soils was significantly(P < 0.05) inhibited by chlorpyrifos within the first two weeks and thereafter recovered to a similar level as the control.A similar variation in the diversity indices(Simpson index 1/D and McIntosh index U) was observed,but no significant difference among the values of the Shannon-Wiener index H was found in chlorpyrifos-treated soils.With an increasing chlorpyrifos concentration,the half-life of chlorpyrifos was significantly(P 0.05) extended and its inhibitory effect on soil microorganisms was aggravated.It is concluded that chlorpyrifos residues in soil had a temporary or short-term inhibitory effect on soil microbial functional diversity. 关键词：土壤微生物功能多样性实验室条件毒死蜱降解 Simpson指数 WIENER指数 BIOLOG

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Degradation of chlorpyrifos in laboratory soil and its impact on soil microbial functional diversity

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