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农用稀土的生态毒理学效应
引用本文:刘苏静,周 青.农用稀土的生态毒理学效应[J].中国生态农业学报,2007,15(3):187-190.
作者姓名:刘苏静  周 青
作者单位:1. 江南大学生物工程学院环境生态研究室,无锡,214036
2. 江南大学工业生物技术教育部重点实验室,无锡,214036
基金项目:国家自然科学基金;国家发展和改革委员会资助项目
摘    要:稀土农用给中国农业带来巨大经济效益,但环境安全问题也随之产生。本研究从生态毒理学角度,综述了稀土对土壤微生物、植物、动物的影响,指出稀土可以改变土壤微生物的种群结构、种群数量及其土壤酶活性,影响植物的生长发育、生理生化过程及富集规律,并对动物生殖系统、肝脏、儿童智力及人体健康造成损害。稀土对生物的生态毒理作用,可以是稀土对生物的直接影响,也可以是食物链蓄积的间接效应,在稀土农用中应充分考虑其对环境与人体的影响。

关 键 词:稀土  生态毒理  累积效应  环境安全  土壤酶活性  种群结构  生长发育
收稿时间:2006-06-13
修稿时间:2006-06-132006-08-23

Ecotoxic effects of rare earths in agriculture
LIU Su-Jing and ZHOU Qing.Ecotoxic effects of rare earths in agriculture[J].Chinese Journal of Eco-Agriculture,2007,15(3):187-190.
Authors:LIU Su-Jing and ZHOU Qing
Institution:1. Lab of Environmental Ecology, School of Biotechnology,Southern Yangtze University, Wuxi 214036, China; 2.The Key Laboratory of Industrial Biotechnology, Ministry of Education,Southern Yangtze University,Wuxi 214036,China
Abstract:Rare earths(RE)in agriculture has great economic benefits,but environmental security problems emerge in the longrun.The effects of rare earths on edaphons,plants and animals were measured by the level of RE ecotoxicity.It is observed that RE changes edaphon population structure,population numbers and their soil enzyme activity;affects plant growth,biological physiology and RE accumulation in plant;and damages human reproductive system and health,liver and children's intelligence.It is concluded that RE is toxic to biota,and could directly affect biological processes,or indirectly affect biological processes through food chain.It is recommended that the effects of RE on environment,agriculture and man should be further investigated.
Keywords:Rare earth  Ecotoxicity  Accumulation effect  Environmental safety  Soil enzyme activity  Population structure  Growth and development
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