| 安徽水稻土中镉元素生态安全评价标准探讨 |
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| 引用本文： | 贾十军.安徽水稻土中镉元素生态安全评价标准探讨[J].安徽地质,2013(2):132-136. |
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| 作者姓名： | 贾十军 |
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| 作者单位： | 安徽省地质调查院,安徽合肥,230001 |
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| 摘 要： | 土壤中镉元素稳定的残渣态所占比例在重金属中为最低,其赋存形态以离子态为主,易被植物吸收的活性态较高,生态危害较大。稻米镉元素与土壤镉元素具有显著的正相关性。根据区域土壤镉元素与稻米镉元素含量及稻米镉超标率关系,将水稻种植土壤分为生态安全土壤、具生态安全风险土壤及生态安全高风险土壤,提出了土壤镉元素生态安全定量分级标准。
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| 关 键 词： | 水稻土 镉元素 生态安全 评价标准 |
Discussion on eco-safety evaluation criteria of cadmium in paddy rice in Anhui |
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| JIA Shi-jun.Discussion on eco-safety evaluation criteria of cadmium in paddy rice in Anhui[J].Geology of Anhui,2013(2):132-136. |
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| Authors: | JIA Shi-jun |
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| Institution: | JIA Shi-jun (Institute of Geological Survey of Anhui Province, Hefei, Anhui 230001, China) |
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| Abstract: | Among heavy metals, cadmium in stable residue state has the smallest share in soil. Occurring substantially in the form of ion, it is easily absorbed by plants for its higher activated state, thus doing much damage to ecology. There exists a remarkable positive correlation between cadmium in paddy rice and cadmium in soil. Based on the relationship between cadmium in soil, cadmium in rice and its rate of over-standard content in rice, the author divided paddy rice growing soil into ecologically safe soil, ecologically risky soil and ecologically highly risky soil, and gave a ecological safety quantitative rating standard for cadmium in soil. |
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| Keywords: | paddy rice cadmium ecological safety evaluation criteria |
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