土壤锗污染对土壤酶活性的生态毒理效应  

ECO-TOXICOLOGICAL EFFECTS OF Ge-POLLUTION ON SOIL ENZYME ACTIVITIES IN SOIL

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1期106-110,共5页Acta Pedologica Sinica

基　　金：湖北省科技攻关计划引导项目(2001AA201C1)资助

摘　　要：通过室内培养和盆栽试验,研究了土壤添加锗(Ge)对黄棕壤过氧化氢酶、脱氢酶、脲酶、碱性磷酸酶、转化酶的生态毒理效应。结果表明,在土壤Ge含量2~200 mg kg-1范围,土壤Ge对脱氢酶、碱性磷酸酶、转化酶活性抑制作用不明显。土壤Ge对土壤过氧化氢酶和脲酶活性有明显抑制作用,脲酶受Ge的抑制作用最强。土壤Ge含量与脲酶活性之间具有显著负相关,脲酶抑制率可作为Ge生态风险评价的一项生物指示物。Eco-toxicological effects of germanium on activities of catalase,dehydrogenase,urease,phosphatase and invertase in brown-yellow soil were studied by means of indoor culture and pot culture experiments. The results showed that when Ge concentration ranged between 2～200 mg kg^(-1) in the soil,its inhibiting effect on soil dehydrogenase,phosphatase and invertase was not significant,but quite so the activity of soil catalase and urease; especially the latter. A significant negative relationship between urease activity and Ge concentration of soil could be observed,so it isfeasible to use inhibition rate of soil urease as a bio-indicator for ecological risk assessment of Ge pollution in the soil.

关 键 词：土壤酶活性 脲酶活性 过氧化氢酶 盆栽试验 黄棕壤 脱氢酶 转化酶活性 生态毒理 生态风险评价 污染 

分 类 号：S154.2[农业科学—土壤学] X171[农业科学—农业基础科学]