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1、中國(guó)環(huán)境科學(xué)2013,33(1)：132~137ChinaEnvironmentalScience太湖草、藻型湖區(qū)沉積物-水界面厚度及環(huán)境效應(yīng)研究1,2212*王永平,朱廣偉,洪大林,秦伯強(qiáng)(1.南京水利科學(xué)研究院,水文水資源與水利工程科學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室,江蘇南京210029；2.中國(guó)科學(xué)院南京地理與湖泊所,湖泊與環(huán)境國(guó)家重點(diǎn)實(shí)驗(yàn)室,江蘇南京210008)摘要：在太湖草、藻型湖區(qū)采樣,分別測(cè)定了1,3,5,10,15cm5層沉積物和沉積物表面以上5,20,35cm處及水表面以下20cm處4層水的多項(xiàng)指標(biāo).結(jié)果表明:草型湖泊水柱中SS總、SS有機(jī)、Chl-a、T
2、N、TDN、TP和TDP等指標(biāo)顯著低于藻型湖區(qū);草型湖區(qū)水柱中SS總、SS有機(jī)、TN、TDN和TP都呈現(xiàn)出越往下濃度越高的趨勢(shì),而藻型湖區(qū)各水層間差異不明顯.兩類湖區(qū)沉積物的TN、TP、TOC和粒徑都在3~5cm處出現(xiàn)拐點(diǎn);草型湖區(qū)沉積物溶解氧層厚度(<1mm)小于藻型湖區(qū)(<2.5mm).可見(jiàn)在不同的生境類型以及不同的指標(biāo)體系下,沉積物-水界面的厚度也相應(yīng)不同.關(guān)鍵詞：沉積物-水界面；厚度；草型湖區(qū)；藻型湖區(qū)；太湖中圖分類號(hào)：X524文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1000-6923(2013)01-0132-06Studyonthethicknessandenvi
3、ronmentaleffectsofsediment-waterinterfaceofphytoplanktonandmacrophyte1212*dominatedzonesinLakeTaihu.WANGYong-ping,ZHUGuang-wei,HONGDa-lin,QINBo-qiang(1.StateKeyLaboratoryofHydrology–WaterResourcesandHydraulicEngineering,NanjingHydraulicResearchInstitute,Nanjing210029,China；2.StateKe
4、yLaboratoryofLakeScienceandEnvironment,NanjingInstituteofGeographyandLimnology,ChineseAcademyofSciences,Nanjing210008,China).ChinaEnvironmentalScience,2013,33(1)：132~137Abstract：Tounderstandthedifferenceofthepropertiesofsediment-waterinterfacebetweenmacrophytes-dominantregionandphyt
5、oplankton-dominantregioninlargeandshallowlakes,thesedimentcoresandtheoverlyingwatercolumnsweresampledinphytoplanktonandmacrophytedominatedzonesinLakeTaihu.Fivelayerofsedimentcores,withdepthsofsurface1cm,3cm,5cm,10cmand15cmwereslicedforphysicochemicalanalysis.Atthesametime,fourlayers
6、ofoverlyingwater,withdepthof5cm,20cm,35cmabovethesedimentsurface,andonelayerof20cmbelowthewatersurface,weresampleandanalyzedforthecomparativeresearch.Theresultsshowedthat,theconcentrationsoftotalsuspendedsubstance,organicsuspendedsubstance,chlorophyll-a,totalnitrogen,totaldissolvedn
7、itrogen,totalphosphorusandtotaldissolvednitrogeninwatercolumnatmacrophyte-dominantregionweresignificantlowerthanthoseinphytoplanktondominatedzone.Verticalprofileofconcentrationsoftotalsuspendedsubstance,organicsuspendedsubstance,chlorophyll-a,totalnitrogenandtotaldissolvednitrogenin
8、watercolumnatmacrop
