土壤-作物污染物迁移分配与食物安全的评价模型及其应用

人类对潜在有毒污染物的接触及其健康风险是当今环境科学与医学共同关心的热点问题，而污染土壤中毒污染物在土壤－植物系统迁移与转化是其中的关键基础问题，本文基于对现有资料的分析，提出计算污染物的环境控制标准的数学模型－污染生态模型和环境化学模型，模型计算结果表明，未污染条件下的土壤－植物间元素分配参数不符合污染土壤环境中的土壤－食用作物－人类间污染物分配的特点。因此，制定土壤环境控制标准必须考虑实施土壤的环境化学特点，本文建立的模型有其对污染物的土壤环境控制标准的计算结果，期望于对我国加强污染生态研究和食物安全评价有一定的参考意义。

Modeling transfer and partitioning of potentially toxic pollutants in soil-crop system for human food security

Human exposure to potential toxic pollutants and the associated health risk is a focus of current environmental and medical studies. However, the transfer and partitioning of the pollutants in the soil crop systems turns to be a key problem for evaluating the food intake of the pollutants. This paper deals with the methodology and the approach of computer modeling of the soil crop partitioning of the pollutants under agricultural systems for human food security and the elaboration of guidelines for soil protection. Two major models, crop ecological model and soil environmental chemical model, are discussed respectively . These models may be valuable for the research of agricultural environment protection and the development of guidelines for soil protection in China.