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施肥对干旱半干旱草原区金属矿山尾矿库土壤质量的影响及其评价 被引量:7
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作者 珊丹 郭建英 +4 位作者 荣浩 王小莉 张铁钢 邢恩德 吴旭南 《安全与环境工程》 CAS CSCD 北大核心 2022年第3期208-217,共10页
地处草原生态脆弱区的金属矿山尾矿库土壤中营养物质匮乏,重金属等有害物质含量高,且由于降水量偏低、无霜期较短等气候条件使该地区生态环境恢复极为困难。通过微生物菌肥、有机肥野外施用试验,分析不同施肥方式对干旱半干旱草原区金... 地处草原生态脆弱区的金属矿山尾矿库土壤中营养物质匮乏,重金属等有害物质含量高,且由于降水量偏低、无霜期较短等气候条件使该地区生态环境恢复极为困难。通过微生物菌肥、有机肥野外施用试验,分析不同施肥方式对干旱半干旱草原区金属矿山尾矿库土壤酶活性和主要养分的影响,并采用灰色关联度法对不同施肥方式下土壤质量进行了评价。结果表明,单独施肥或配合施肥对土壤中脲酶活性都有积极的作用,配合施肥更有利于增加土壤中蔗糖酶活性,与土壤中脲酶、蔗糖酶活性变化相比,施肥对土壤中过氧化氢酶活性的影响相对不明显;施用有机肥可使土壤中有机质含量比施用微生物菌肥高35.1%,配合施肥对土壤中氮元素的影响要显著高于单独施肥,施肥能明显提高土壤中速效磷和速效钾含量;土壤中脲酶活性和氮、磷元素含量是影响尾矿库土壤质量的主要因素,施用微生物菌肥的土壤质量要优于施用有机肥的土壤,配合施肥的土壤养分状况要优于单独施肥的土壤,且适量的配合施肥能有效改善土壤的养分状况。该研究结果可为干旱半干旱草原区金属矿废弃地土壤恢复与完善生态建设方案提供依据。 展开更多
关键词 尾矿库土壤 施肥 土壤酶活性 土壤养分 土壤质量评价 灰色关联度法
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Plant Cover and Soil Biochemical Properties in a Mine Tailing Pond Five Years After Application of Marble Wastes and Organic Amendments 被引量:7
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作者 R.ZORNOZA A.FAZ +3 位作者 D.M.CARMONA S.KABAS S.MARTíNEZ-MARTíINEZ J.A.ACOSTA 《Pedosphere》 SCIE CAS CSCD 2012年第1期22-32,共11页
Tailing ponds pose environmental hazards, such as toxic metals which can contaminate the surroundings through wind and water erosions and leaching. Various chemical and biochemical properties, together with extractabl... Tailing ponds pose environmental hazards, such as toxic metals which can contaminate the surroundings through wind and water erosions and leaching. Various chemical and biochemical properties, together with extractable and soluble metals were measured five years after reclamation of a polluted soil affected by former mining activities. This abandoned mine site contains large amounts of Fe-oxyhydroxides, sulphates, and heavy metals. As a consequence, soils remain bare and the soil organic matter content is low (〈 3 g kg-1). Marble waste, pig manure and sewage sludge were applied in 2004. Plant cover and richness, and soil chemical, biochemical and biological parameters were analysed five years later. Results showed that all soil biochemical properties as well as vegetation cover and richness were higher in treated soils than in the untreated contaminated plots (control), although organic matter, pH values and extractable metals concentrations were similar among treatments. Soluble cadmium and zinc were lower in the amended plots than in control. 展开更多
关键词 hydrolase activities metal pollution microbial biomass organic amendments REMEDIATION
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