CAJ | 학술논문

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。
위과학평개농전중금속오염풍험，본연구재분별진행토양화작물오염평개적기출상，제출료가동시반영농전생태안전、생산안전화농산품질량안전적중금속오염풍험평개모형———토양－작물계통협동평개모형，병대초작광구농전중금속오염진행료과학평개。결과표명，근거생태풍험지수법대토양오염풍험진행평개，광정수오관농전（F1양지）화매안석오염농전（F2양지）종합생태풍험지수분별위239．60화178．42，체도중등수평，재광구공로측농전（F3양지）토양체도경미생태풍험수평。근거종합오염지수법대소맥（Triticum aestivum）자립중중금속풍험진행평개，F1、F2화 F3삼개양지소맥자립중중금속오염종합지수균체도중도오염수평。채용토양－식물계통협동평개모형대중금속오염농전진행풍험평개，F1양지적오염등급분치위48．4，체도중도오염수평、F2양지적오염등급분치위54．4，체도중도오염수평、F3양지적오염등급분치76．8，위경도오염수평。
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 eco-logical 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 sys-tem ,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 .