Comparison of the Alkali Marsh Soil and Agriculture Soil on Nutrient Retentionin Western Jilin, China

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    摘要 Anintactalkalimarshsoil(MS)coreandanagriculturesoil(AS)corewerestudiedbythesimulatedtestinordertogetthecomparisonofthenutrientsretentioninalkaliMSandAS.ThesoilcoresextractedfromtheXianghaiWetland,westernJilinProvince,China,wereleachedwithsolutioncontainedcarbon,nitrogenandphosphorus.Thentheeffluentwaterfromtheoutletsofsoilcorewithdifferentdepthswasmeasured,includingchemicaloxygendemand(COD),totalphosphorus(TP),phosphate(PO3-4-P)andnitrogenexistedasnitrate(NO-3-N),nitrite(NO-2-N)andammonianitrogen(NH+4-N)andthetotalnitrogen(TN)intheeffluentwater.CODandTParedecreasedwiththedepth,thechangingtrendsofTN,NO-3-NandNH+4-NcontentsaresimilartoCODandTP,whereasNO-2-NinbothMSandASeffluenthavealittletransitionat40cmdepth.ItissimilarefficiencyofMStoASinsignificantlycuttingdownCOD,TP,PO3-4-P,TN,NO-3-N,NH+4-NandNO-2-Ninnutrientwater.ThefunctionofMSwouldbesameefficiencyofthenutrientsretentionastheAS.AlthoughtheSOMandpHhavesomeimpactsonnutrientsretentioninthesoil,theMSwithhighersoilorganicmatter(SOM)andpHhavethesameeffluentwaterastheASwiththelowerSOMandpHatthedepthof60cm,thebottomofthesoilcores.
    作者 XU Xiao-feng
    机构地区 不详
    出处 《湿地科学》 2003年2期
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    出版日期 2003年02月12日(中国Betway体育网页登陆平台首次上网日期,不代表论文的发表时间)
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