| Effect of Exogenous Rare Earths on Microbial Characteristics in Paddy Soil |
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| 作者姓名： | 周峰 陈浮 曹建华 濮励杰 彭补拙 |
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| 作者单位： | Laboratory of Soil and Water Stimulating，Department of Geography，Nanjing University，Nanjing 210093，China，Laboratory of Soil and Water Stimulating，Department of Geography，Nanjing University，Nanjing 210093，China，Institute of Agricultural Resources and Eco-Environment，Nanjing Agricultural University，Nanjing 210095，China，Laboratory of Soil and Water Stimulating，Department of Geography，Nanjing University，Nanjing 210093，China |
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| 摘 要： | Duetoincreasingcropyieldsandimprovingcropquality ,REammoniumhydrogencarbonatecomplexfertilizerwereappliedwidelyinsoils ,whichacceler atetheaccumulationofREinsoilsafteragriculturalapplication1,2 ] .Previousstudieshavereportedaccu mulationofREsinsoilissignificantafter 3monthsofagriculturalapplication3] ,andREhardlymigratedownward4 ] .Itiscertaintythatagriculturalapplica tionofREcanresultREaccumulationinsoilandmayhaveaneffectonsoilmicrobialactivities .Soilmicro bialbiomassisamarkerofthemi…
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| 关 键 词： | 呼吸速率 稻田 生物量 微生物 稀土 植物生理学 |
Effect of Exogenous Rare Earths on Microbial Characteristics in Paddy Soil |
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| Zhou Feng ,Chen Fu,Cao Jianhua ,Pu Lijie,Peng Buzhuo.Effect of Exogenous Rare Earths on Microbial Characteristics in Paddy Soil[J].Journal of Rare Earths,2004,22(2):296-300. |
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| Authors: | Zhou Feng Chen Fu Cao Jianhua Pu Lijie Peng Buzhuo |
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| Affiliation: | Zhou Feng 1*,Chen Fu1,Cao Jianhua 2,Pu Lijie,Peng Buzhuo 1 |
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| Abstract: | An incubation study was performed to elucidate exogenous rare earth elements(RE)influencing on microbial biomass,microbial ecophysiological parameters cmic/corg,metabolic quotient qCO2 and respiratory rate in relation to temporal availability in paddy soil.Six samples were added different concentrations between 0 and 2000 mg*kg-1 REEs in soil.Results show that exogenous RE have slight stimulative effects on microbial indices in paddy soil at low concentration in the early stage after adding RE,while having inhibitory effects at high concentration.The inhibition is strengthened with increasing RE concentration and is weakened with increasing incubation time.Principal component analysis of the BIOLOG data indicates that microbial community structures have changed,carbon sources consumption of microorganisms in paddy soil becomes much more rapid after 8 weeks,and under RE stress,the change of microbial community structures is a long-term effect. |
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| Keywords: | microbial biomass respiratory rate community structure paddy soil rare earths |
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