| 张合兵,马守臣,王 锐,马守田,王新闯,邵 云.重金属污染土壤-作物系统协同评价模型及在煤矿区农田污染中应用[J].干旱地区农业研究,2015,33(2):261~265 |
| 重金属污染土壤-作物系统协同评价模型及在煤矿区农田污染中应用 |
| A model for synergetic assessment of soil-plant system in heavy metal contamination farmland and its application in a coal mining area |
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| DOI：10.16302/j.cnki.1000-7601.2015.02.042 |
| 中文关键词: 土壤-作物系统 重金属污染 协同评价 冬小麦 |
| 英文关键词:soil-plant system heavy metal contamination synergetic assessment winter wheat |
| 基金项目:科技部公益性行业（国土）科研专项课题（201411022-2） |
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| 中文摘要: |
| 为科学评价农田重金属污染风险，本研究在分别进行土壤和作物污染评价的基础上，提出了可同时反映农田生态安全、生产安全和农产品质量安全的重金属污染风险评价模型——土壤-作物系统协同评价模型，并对焦作矿区农田重金属污染进行了科学评价。结果表明，根据生态风险指数法对土壤污染风险进行评价，矿井水污灌农田（F1样地）和煤矸石污染农田（F2样地）综合生态风险指数分别为239.60和178.42，达到中等水平，在矿区公路侧农田（F3样地）土壤达到轻微生态风险水平。根据综合污染指数法对小麦（Triticum aestivum）籽粒中重金属风险进行评价， F1、F2和F3三个样地小麦籽粒中重金属污染综合指数均达到重度污染水平。采用土壤-植物系统协同评价模型对重金属污染农田进行风险评价，F1样地的污染等级分值为48.4，达到重度污染水平、F2样地的污染等级分值为54.4，达到中度污染水平、F3样地的污染等级分值76.8，为轻度污染水平。 |
| 英文摘要: |
| To scientifically evaluate risks of heavy metal contamination on farmlands in the coal mining areas, we introduced a synergetic assessment model for heavy metal contamination in soil-plant system on the basis of farmland ecological safety, crop production safety and quality safety of agricultural products. The results showed that, according to the ecological risk index of heavy metal pollution, the soil comprehensive ecological risk index was 239.60 for F1 sample plot (mine water contaminated farmland), and 178.42 for F2 sample plot (the coal waste rock contaminated farmland), both of which reached moderate risk levels. The soil comprehensive ecological risk index of F3 sample plot (farmland close to the highway) reached subtle risk level. For wheat grains, the heavy metal comprehensive contamination indexes all reached severe risk levels in F1, F2 and F3 sample plots. According to synergetic assessment model of soil-plant system, the value of pollution degree in F1 sample plot was for 48.4, reaching a high risk level; the value in F2 sample plot was for 54.4, as a moderate risk level; and the value F3 sample plot was for 76.8, at a subtle risk level. |
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