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1、第21卷第5期水土保持學(xué)報Vol.21No.52007年10月JournalofSoilandWaterConservationOct.,2007①沉水植物對不同層次沉積物及土壤中磷遷移的影響1212,33趙海超,王圣瑞,羅永華,金相燦,劉景輝(1.河北北方學(xué)院農(nóng)林科學(xué)院,河北張家口075131;2.中國環(huán)境科學(xué)研究院湖泊生態(tài)環(huán)境創(chuàng)新基地?國家環(huán)境保護湖泊污染控制重點實驗室,北京100012;3.內(nèi)蒙古農(nóng)業(yè)大學(xué)農(nóng)學(xué)院,內(nèi)蒙古呼和浩特010018)摘要:利用相同區(qū)域湖泊沉積物及土壤培養(yǎng)黑藻,分析不同層次底質(zhì)中各形態(tài)磷含量和間隙水中磷濃度的變化,揭示在沉水植物作用下淹水土壤和沉
2、積物中不同層次磷的遷移規(guī)律。結(jié)果表明,本試驗條件下,土壤各層次均比營養(yǎng)水平相當(dāng)?shù)某练e物中磷的遷移性大,黑藻能促進上層底質(zhì)中無機磷向上覆水中遷移,通過根系作用促進根尖分布層底質(zhì)中有機磷的遷移轉(zhuǎn)化;黑藻對沉積物下層(根尖分布層)磷遷移轉(zhuǎn)化的影響小于土壤,對上層底質(zhì)中磷向上覆水中遷移的影響大于土壤;黑藻通過吸收作用及改變根區(qū)環(huán)境條件,影響底質(zhì)間隙水中各形態(tài)磷的濃度,黑藻對沉積物間隙水中磷濃度的影響大于土壤。關(guān)鍵詞:沉水植物;沉積物;磷遷移中圖分類號:Q948.8;S155.42;X52文獻標(biāo)識碼:A文章編號:100922242(2007)0520010205EffectonTra
3、nsferredofPhosphorusinDifferentLayerSedimentandSoilbySubmergedPlant1212,33ZHAOHai2chao,WANGSheng2rui,LUOYong2hua,JINXiang2can,LIUJing2hui(1.DepartmentofAgriculturalScience,HebeiNorthUniversity,Zhangjiakou075131;2.StateEnvironmentalProtectionKeyLaboratoryforLakePollutionControl?ResearchCent
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
