在由煤矸石、粉煤灰和污泥构成的矿区复合基质上种植黑麦草进行矿区复垦试验,分析了不同复垦阶段土壤微生物功能多样性和酶活性的差异,以揭示矿区复垦过程中免施肥的可行性。结果表明,矿区复垦土壤微生物功能多样性和酶活性随复垦时间...在由煤矸石、粉煤灰和污泥构成的矿区复合基质上种植黑麦草进行矿区复垦试验,分析了不同复垦阶段土壤微生物功能多样性和酶活性的差异,以揭示矿区复垦过程中免施肥的可行性。结果表明,矿区复垦土壤微生物功能多样性和酶活性随复垦时间的延长而显著提高。复垦23个月后,矿区复垦土壤的全氮、速效磷和速效钾含量分别比复垦种植前降低72.05%、67.86%和60.19%,蔗糖酶、脱氢酶、脲酶和碱性磷酸酶活性增加1.30～7.56倍。Biolog微平板培养测试结果显示,矿区复垦16和23个月的土壤微生物群落AWCD(average well colour devel-opment)值,微生物Shannon多样性指数、Simpson指数、McIntosh指数均显著高于复垦种植前(P<0.05)。微生物多样性相关参数与土壤酶活性及土壤有机质含量之间呈显著正相关(P<0.05或P<0.01),与土壤全氮、速效磷、速效钾含量之间呈显著负相关(P<0.05或P<0.01)。在矿区复垦过程中污泥作为有机添加物有助于促进植物生长和提高微生物活性。展开更多
Soil microbial features on Chai-He Zinc-lead Mine wasteland and non-mine soils were studied.The results showed that soil micoflora changed obviously and total of major soil microbes declined.The amount of microbe decr...Soil microbial features on Chai-He Zinc-lead Mine wasteland and non-mine soils were studied.The results showed that soil micoflora changed obviously and total of major soil microbes declined.The amount of microbe decreased by 83.03 %～93.65 % in top soil（0～20 cm） compared with that of the non-mine soils.Mine soils possessed obviously different microbial features higher in microbial basal respiration strength,and microbial ecophysiological Cmic/Corg and qCO2,but lower in micobial biomass compared with the control.All of these might lead to the impairment of turnover and cycle velocity of C,N nutrition element in mine-soils.It’s one major problem which should be solved in the procession of reclaimed mine-soil.展开更多
文摘在由煤矸石、粉煤灰和污泥构成的矿区复合基质上种植黑麦草进行矿区复垦试验,分析了不同复垦阶段土壤微生物功能多样性和酶活性的差异,以揭示矿区复垦过程中免施肥的可行性。结果表明,矿区复垦土壤微生物功能多样性和酶活性随复垦时间的延长而显著提高。复垦23个月后,矿区复垦土壤的全氮、速效磷和速效钾含量分别比复垦种植前降低72.05%、67.86%和60.19%,蔗糖酶、脱氢酶、脲酶和碱性磷酸酶活性增加1.30～7.56倍。Biolog微平板培养测试结果显示,矿区复垦16和23个月的土壤微生物群落AWCD(average well colour devel-opment)值,微生物Shannon多样性指数、Simpson指数、McIntosh指数均显著高于复垦种植前(P<0.05)。微生物多样性相关参数与土壤酶活性及土壤有机质含量之间呈显著正相关(P<0.05或P<0.01),与土壤全氮、速效磷、速效钾含量之间呈显著负相关(P<0.05或P<0.01)。在矿区复垦过程中污泥作为有机添加物有助于促进植物生长和提高微生物活性。
文摘Soil microbial features on Chai-He Zinc-lead Mine wasteland and non-mine soils were studied.The results showed that soil micoflora changed obviously and total of major soil microbes declined.The amount of microbe decreased by 83.03 %～93.65 % in top soil（0～20 cm） compared with that of the non-mine soils.Mine soils possessed obviously different microbial features higher in microbial basal respiration strength,and microbial ecophysiological Cmic/Corg and qCO2,but lower in micobial biomass compared with the control.All of these might lead to the impairment of turnover and cycle velocity of C,N nutrition element in mine-soils.It’s one major problem which should be solved in the procession of reclaimed mine-soil.
