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1、第21卷第5期水土保持学报Vol.21No.52007年10月JournalofSoilandWaterConservationOct.,2007①沉水植物对不同层次沉积物及土壤中磷迁移的影响1212,33赵海超,王圣瑞,罗永华,金相灿,刘景辉(1.河北北方学院农林科学院,河北张家口075131;2.中国环境科学研究院湖泊生态环境创新基地ö国家环境保护湖泊污染控制重点实验室,北京100012;3.内蒙古农业大学农学院,内蒙古呼和浩特010018)摘要:利用相同区域湖泊沉积物及土壤培养黑藻,分析不同层次底质中各形态磷含量和间隙水中磷浓度的变化,揭示在沉水植物作用下淹水土壤和沉
2、积物中不同层次磷的迁移规律。结果表明,本试验条件下,土壤各层次均比营养水平相当的沉积物中磷的迁移性大,黑藻能促进上层底质中无机磷向上覆水中迁移,通过根系作用促进根尖分布层底质中有机磷的迁移转化;黑藻对沉积物下层(根尖分布层)磷迁移转化的影响小于土壤,对上层底质中磷向上覆水中迁移的影响大于土壤;黑藻通过吸收作用及改变根区环境条件,影响底质间隙水中各形态磷的浓度,黑藻对沉积物间隙水中磷浓度的影响大于土壤。关键词:沉水植物;沉积物;磷迁移中图分类号:Q948.8;S155.42;X52文献标识码:A文章编号:100922242(2007)0520010205EffectonTra
3、nsferredofPhosphorusinDifferentLayerSedimentandSoilbySubmergedPlant1212,33ZHAOHai2chao,WANGSheng2rui,LUOYong2hua,JINXiang2can,LIUJing2hui(1.DepartmentofAgriculturalScience,HebeiNorthUniversity,Zhangjiakou075131;2.StateEnvironmentalProtectionKeyLaboratoryforLakePollutionControlöResearchCent
4、erofLakeEco2environment,ChineseResearchAcademyofEnvironmentalSciences,Beijing100012;3.CollegeofAgronomy,InnerMongoliaAgricultureUniversity,Huhhot010018)Abstract:Thechangesofthephosphorusformsinthesedimentsandgapwaterofthedifferentlayersedimentsbysubmergedplanthasbeenstudiedusingthesubmerge
5、dplantHydrillaverticillataculturinginhomologyareasedi2mentsandsoil.Theruleonthetransferredofthephosphorusformsindifferentlayersedimentsandsubmergedsoilbysubmergedplanthasbeenstudiedusingwereopenout.Thedifferentlayersoilresultsshowpronetotrans2ferredofphosphorus;Theresultsindicatethatthemai
6、ntransferredofphosphorusonthesoilgreatthanthecom2parativelevelonthealimentationsediments,thesubmergedplantHydrillaverticillatacantoboosttransferredin2organicphosphorusinthesuperstratumsedimentstooverlyingwaterandboosttransferredorganicphosphorusinthesubstrate(layertakeonroottip)sediments;E
7、ffectsoftransferredofthephosphorusinthesubstratesedi2mentslessthansoil,thesuperstratumsedimentsgreatthansoilbysubmergedplant.EffectsofchangesofthephosphorusformsinthegapwaterofthesedimentsbyabsorbeffectandcircumstanceeffectoftheHydrillaverticillata,effectsofch
