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

作     者：FANG Hua YU Yunlong CHU Xiaoqiang WANG Xiuguo YANG Xiaoe YU Jingquan 

作者机构：Department of Plant Protection College of Agriculture & Biotechnology Zhejiang University Hangzhou 310029 China MOE Key Lab of Environment Remediation & Ecosystem Health College of Environmental and Resource Sciences Zhejiang University Hangzhou 310029 China Department of Horticulture College of Agriculture and Biotechnology Zhejiang University Hangzhou 310029 China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2009年第21卷第3期

页      面：380-386页

核心收录：

学科分类：07[理学] 082304[工学-载运工具运用工程] 08[工学] 080204[工学-车辆工程] 0802[工学-机械工程] 0713[理学-生态学] 0823[工学-交通运输工程] 

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) 

主　　题：Biolog chlorpyrifos community-level physiological profile microbial functional diversity 

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 lID 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.