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| Cadmium Pollution and Its Environmental Risk Management in Rice Ecosystem |
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| KeyWord:rice ecosystem; cadmium; bioavailability; food chain; risk management |
| Author Name | Affiliation | | SONG Wen-en | National Soil Fertility and Fertilizer Effects Long-term Monitoring Network, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | CHEN Shi-bao | National Soil Fertility and Fertilizer Effects Long-term Monitoring Network, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | TANG Jie-wei | Rural Energy & Environment Agency，Ministry of Agriculture, Beijing 100026, China |
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| Abstract: |
| Cadmium（Cd） pollution in rice ecosystem has caused extensive public concerns over human health. This paper provides an overview of the recent studies on Cd sources, biogeochemical processes regulating Cd bioavailability to organisms, and Cd transfer and transformation and their major influencing factors（i.e. soil pH, oxidation-reduction reaction, organic matter content, soil texture and coexisting ions etc） in rice ecosystem worldwide. The risk management of Cd in rice ecosystem, including toxicity thresholds of cadmium-containing pollutant inputs, ways to block Cd transfer in rice food train and remediation of polluted paddy fields etc, was also discussed. This would provide fundamental information for preventing soil cadmium pollution and protecting human health. |
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