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| 不同水动力条件对景观水体富营养化模拟过程中藻类演替的影响 |
| EffectsofDifferentW ater Dynam icalCondition on Algae Succession in Eutrophication ProcessofLandscapingW ater Body |
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| 中文关键词: |
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| 基金项目:西安市科技计划基金资助项目 [CXY09025(3)] |
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| 中文摘要: |
| 采用微宇宙培养法 , 分析了不同水动力条件 ( 不循环、 水循环和泥循环 ) 对微污染景观水体富营养化模拟过程中藻类演替的影响。 结果表明, 水循环和泥循环使得水体的TP值前期增加后期减少 , 前期藻类生长主要受TP影响 , 而后期浊度成了重要的影响因素 ; 水循环引起的 TP 值减少及蓝藻聚集状态的破坏, 导致了藻类的生长明显减缓 , 但优势种的演化过程却变得复杂; 泥循环导致了水体TP值的极大减少及浊度的极大增加 , 从而明显的抑制了藻类的生长 , 其优势种的演替过程也变得更简单。 |
| 英文摘要: |
| Tank microcosm had been usedtosimulateeffectsofdifferentwaterdynamicalcondition(nocir culating, circulating withoutsedimen,t circulating with sedim ent) on algaesuccession in eutrophication process oflandscaping waterbody. Theresultsshowedthatcirculating with andwithoutsedimentenhanced early and de creasedlatterlythealgaegrowth. ThegrowthofalgaewasmainlyinfluencedbyTP value duringthefirstperiod of waterbody eutrophication, butturbiditywasanimportantfactorinhibitinggrowth ofalgaeinthelatereutrophica tionstages; thegrowth ofalgaewassignificantlyslow becausecirculating withoutsedimentdecreasedTP content in landscaping waterbody and destroyed aggregation condition of Cyanophyta , butwhich m ade dominantalgae successionalprocess more complex. Dueto circulating withsedimentsignificantly decreasedTP contentandsig nificantlyincreasedturbidityin landscaping waterbody, thegrowth ofalgae wasinhibited. Atthesam etim e, circulating with sedim entmade dominantalgaesuccessionalprocesssimpler. |
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