中文摘要：

比较分析了近年来国际上主要研究机构／组织在生物剂量评估工作中剂量率限值的研究成果。欧洲ERICA项目和PROTECT项目使用FREDERICA效应数据库中的辐射效应数据估计单个生物物种的关键毒理数据EDR10，使用不同物种的EDR10与剂量率数据，建立物种敏感分布（SSD）曲线，采取物种敏感分布法推算出生物的筛选剂量率。在此基础上，结合我国放射生态学研究现状，提出了我国生物剂量率限值研究的相关建议。

英文摘要：

This paper introduces the biota dose rate limits of the international institutions/organizations within environmental risk assessment. The ERICA project and PROTECT project, founded by EC, have used data in the FREDERICA radiation effect database. The critical toxicological value EDR10 of single species in chronic exposure condition is estimated. The species sensitivity distribution （ SSD ） is built on the basis of the estimated toxicological values and dose rates of different species. The final step of the species sensitivity distribution （ SSD ） methodology uses critical toxicological data to derive the screened dose rate. Combined with radio-ecological studies in China and international research results, the suggestions of research of dose rate limit of biota are proposed.