淮南煤矿复垦区土壤腐殖质特征及其与重金属的关系

发布时间：2019-02-11 16:09

【摘要】：选择淮南典型煤矿复垦区不同土地利用方式下(菜地、玉米—小麦地、林地和荒地)的土壤作为研究对象,运用单因素方差分析和内梅罗综合污染指数调查了其腐殖质组成特征与重金属污染状况并探究两者间关系,为修复矿区复垦土壤提供依据。结果表明:土壤腐殖质含量、腐殖化程度和稳定性依菜地玉米—小麦地林地荒地的次序从最佳向最差过渡。不同土地利用方式下土壤胡敏素(HM)的组成不同,HM各组分有机碳含量为HMrHMiHMc;且施用有机肥土壤较不施肥土壤中HM各组分的含量明显增加。复垦区土壤中Cu和Cd含量均高于土壤背景值,Zn含量低于土壤背景值,土壤处于轻度污染状态。施用有机肥提高复垦土壤肥力的同时,需控制有机肥中重金属含量,以降低土壤重金属污染风险。
[Abstract]:The soil under different land use patterns (vegetable land, corn-wheat land, woodland and wasteland) in typical Huainan coal mine reclamation area was selected as the research object. Single factor analysis of variance (ANOVA) and Nemero comprehensive pollution index were used to investigate the relationship between humus composition and heavy metal pollution in order to provide evidence for remediation of reclaimed soil in mining area. The results showed that the content of soil humus, the degree of humification and the stability of soil transition from the best to the worst in the order of maize and wheat woodland wasteland in vegetable field. The composition of soil humin (HM) was different under different land use patterns. The content of organic carbon in HM was HMrHMiHMc; and the content of HM in soil with organic fertilizer was significantly higher than that in soil without fertilization. The contents of Cu and Cd in reclaimed soil were higher than those in soil background, and the content of Zn was lower than that of soil background, and the soil was slightly polluted. In order to reduce the risk of soil heavy metal pollution, it is necessary to control the content of heavy metals in organic fertilizer while increasing the fertility of reclaimed soil.
【作者单位】：安徽大学资源与环境工程学院;
【基金】：国家自然科学基金(41172121) 淮南矿业集团有限责任公司攻关项目“煤矿区采煤沉陷综合治理及生态城镇建设一体化研究”(HNKY-JTJS-2013-41)
【分类号】：S153.6

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