土壤锗污染对土壤微生物的生态毒理效应  

ECOLOGICAL EFFECTS OF GERMANIUM-POLLUTION ON SOIL MICROORGANISMS AND THEIR CRITICAL VALUE

作　　者：林匡飞[1] 徐小清[2] 郑利[2] 邵志慧[3] 项雅玲[3] 

机构地区：[1]华东理工大学危险化学物质风险评价与控制研究中心,上海200237 [2]中国科学院水生生物研究所,武汉430072 [3]农业部环境质检中心,武汉430070

出　　处：《土壤学报》2005年第2期266-269,共4页Acta Pedologica Sinica

基　　金：湖北省科技攻关计划引导项目 (2 0 0 1AA2 0 1C1)资助

摘　　要：着重讨论土壤添加Ge对土壤微生物的生态效应及土壤Ge污染临界含量。盆栽试验表明,在土壤Ge含量2～2 0 0mgkg-1范围,低浓度Ge对土壤细菌、真菌、放线菌有刺激作用,随着浓度增高,而交替出现抑制和刺激作用。土壤Ge浓度与明亮发光杆菌T3发光度之间有极显著的负相关性,按照T3发光度80 %和10 0 %为临界值,计算得土壤Ge临界浓度分别为5 0 2mgkg-1和5 8mgkg-1。Ecological effects of germanium addition to soil on microorganisms and their critical value were emphatically discussed in this paper. A pot experiment was carried out with results demonstrating that low Ge concentration had stimulating effect on soil bacteria, fungi, actinomycetes, but when the content of Ge in the soil increased, the stimulating effect began to alternate with inhabiting one. In the pot experiment, the luminescence of photobacterium phosphoreum spp. T3 showed a strongly negative relationship to the concentration of Ge. If '100%' and '80%'of the luminescence of Strain T3 is deemed as critical values for two grades, the critical concentrations of Ge in soil were estimated to be 50.2 mg kg -1 and 5.8 mg kg -1 , respectively.

关 键 词：土壤微生物 盆栽试验 低浓度 发光杆菌 土壤细菌 生态效应 放线菌 生态毒理 污染 临界值 

分 类 号：S154[农业科学—土壤学] X171[农业科学—农业基础科学]