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| 基于改进物元可拓模型评价设施菜地土壤重金属污染风险 |
| Assessment of Heavy Metal Pollution Risk in Greenhouse Soil Based on the Improved Matter-Element Extension Model |
| 投稿时间：2019-11-11 修订日期：2020-01-08 |
| DOI： |
| 中文关键词: 改进物元可拓模型 设施菜地 土壤 重金属 |
| 英文关键词: improved matter-element extension model greenhouse vegetable soil heavy metal |
| 基金项目:现代农业产业技术体系专项资金项目（CARS-23-B16） |
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| 摘要点击次数: 408 |
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| 中文摘要: |
| 为解决土壤重金属污染的不确定性和模糊性、传统方法评价结果失真度高、新标准下我国设施菜地土壤重金属风险状况未知等问题，在新出台的土壤环境质量评价标准下，利用改进的物元可拓模型对我国设施菜地土壤重金属污染风险状况进行评价，并将结果与传统评价方法进行对比分析。结果表明：我国绝大多数设施菜地土壤重金属含量处于较低水平。采用改进物元可拓模型评价我国设施菜地土壤污染等级以清洁(43.9%)、尚清洁(48.8%)为主，部分样点出现轻度(4.9%)、中度(0.8%)和重度(1.6%)污染，其中Cd、Cu为主要影响因子。在设施菜地土壤重金属污染评价中，改进物元可拓模型评价方法相比于传统评价方法结果更为合理，对进一步的设施菜田土壤重金属污染防控更具实际指导意义，具有可适用性。 |
| 英文摘要: |
| To solve the problem of uncertainty and ambiguity of soil pollution, high distortion degree of traditional evaluation method results and the unknown the soil pollution risk status in greenhouse, the improved matter element extension model was used to evaluate the risk status of heavy metal pollution in protected vegetable soil in China with the new environmental quality standard for soils, and the results were compared with the traditional evaluation method. The results indicate that the heavy metal content of soil is at a low level in most greenhouses in China. The results of the improved matter-element extension model assessment showed that 92.7% of soil samples are clean, and some samples reached slight (4.9%), moderate (0.8%) and severe (1.6%) risk of soil pollution. Ecological risk is mainly affected by metal of Cd and Cu. The assessment results from the improved matter-element extension model were more reasonable than those with the traditional evaluation method. It’s indicating that the improved matter-element extension model could be applied for the assessment of the soil heavy metal pollution in greenhouses. |
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