Details

Autor(en) / Beteiligte

• FANG, Hua
• YU, Yunlong
• CHU, Xiaoqiang
• WANG, Xiuguo
• YANG, Xiaoe
• YU, Jingquan

Titel

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

Ist Teil von

• Journal of environmental sciences (China), 2009, Vol.21 (3), p.380-386

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2009

Quelle

MEDLINE

Beschreibungen/Notizen

• 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.