Soil Microbial Characteristics Under Long-Term Heavy Metal Stress:A Case Study in Zhangshi Wastewater Irrigation Area,Shenyang

作     者：ZHANC Yan ZHANG Hui-Wen SU Zhen-Cheng ZHANG Cheng-Gang 

作者机构：Key Laboratory of Terrestrial Ecological Process Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 (China) Graduate School of the Chinese Academy of Sciences Beijing 100039 (China) 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2008年第18卷第1期

页      面：1-10页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

基　　金：Project supported by the National Key Basic Research Support Foundation of China (No.2004CB418503) 

主　　题：heavy metal stress metabolic quotient microbial biomass microbial quotient wastewater irrigation 

摘      要：Soil samples were collected from Zhangshi Wastewater Irrigation Area in the suburb of Shenyang City,China,an area with a 30-year irrigation history with heavy metal-containing *** chemical properties and microbial characteristics of the soils were examined to evaluate the present situation of heavy metal pollution and to assess the soil microbial characteristics under long-term heavy metal *** light of the National Environmental Quality Standards of China,the soil in the test area was heavily polluted by Cd and to a lesser degree by Zn and Cu,even though wastewater irrigation ceased in *** metabolic quotient (qCO_2) had a significant positive correlation,while soil microbial quotient (qM) had a negative correlation with content of soil heavy *** microbial biomass carbon (MBC) had significantly negative correlation with Cd,but soil substrate-induced respiration (SIR),dehydrogenase activity (DHA),cellulase activity, and culturable microbial populations had no persistent correlations with soil heavy metal *** nutrients,except for phosphorous,showed positive effects on soil microbial characteristics,which to a certain degree obscured the adverse effects of soil heavy *** Cd contributed more to the soil microbial characteristics,but qM and qCO_2 were more sensitive and showed persistent responses to heavy metals *** could be concluded that qM and qCO_2 can be used as bioindicators of heavy metal pollution in soils.