Behavior and respiration responses of the earthworm Eisenia fetida to soil arsenite pollution  

作　　者：Yali WANG Yizhao WU Jo CAVANAGH Xiuhong WANG Jiangping QIU Yinsheng LI 

机构地区：[1]School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China [2]School of Environmental Engineering,Henan University of Technology,Zhengzhou 450001,China [3]Landcare Research,P.O.Box 40,Lincoln 7640,New Zealand

出　　处：《Pedosphere》2021年第3期452-459,共8页土壤圈（英文版）

基　　金：This study was financed by the National Key R&D Program of China(No.2017Y FD 0501405);the National Natural Science Foundation of China(No.41471203);the Natural Science Projects of Henan University of Technology,China(No.2019BS037);the Key Projects of Shanghai Municipal Agricultural Commission,China(No.20166-3-2).

摘　　要：Soil arsenic(As)pollution from mining and industrial sources is a serious issue in China.Earthworms are considered ecosystem engineers and contribute to soil fertility development and maintenance of soil physico-chemical properties.In this study,earthworms were exposed to soils with different sodium arsenite concentrations(0,5,20,and 80 mg As kg^(-1))for 60 d to investigate the changes in soil properties and the responses of the earthworms(e.g.,burrowing activity and respiration).Earthworm burrowing activity decreased with increasing arsenite concentrations,and earthworm respiration was significantly lower in soils with 20 and 80 mg As kg^(-1) compared to 0 mg As kg^(-1).Changes in soil properties were also observed after incubation of As-amended soil with earthworms.Specifically,soil pH decreased,while soil electrical conductivity and contents of soil NH3--N,Olsen-P,and available K increased.Our results suggest that arsenite negatively impacts the metabolic activity of earthworms,leading to reduced burrowing activity,which in turn modifies the effects of earthworms on soil fertility and remediation.

关 键 词：As contamination earthworm avoidance earthworm burrowing activity maximum burrow length remediation soil property 

分 类 号：X53[环境科学与工程—环境工程] S154.1[农业科学—土壤学]