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1、Sci．(湖泊科學)，2015，27(4)：607-615D0I10．18307／2015．O407⑥2015byJournalofkSciences表層底泥翻耕對太湖藻源性湖泛的預控作用何偉，陳煜權(quán)，顧春新，范成新。，蔡麗婧(1：上?？睖y設計研究院有限公司，上海200434)(2：無錫市錫山區(qū)水利局，無錫214101)(3：中國科學院南京地理與湖泊研究所，南京21oo08)摘要：表層底泥已被證實是引發(fā)或誘發(fā)太湖湖泛發(fā)生的主要因素，但能否通過像控制湖泊內(nèi)源污染的翻耕方式對湖泛形成預控，則有待與過程有關(guān)的實驗研究．模擬研究太湖
2、易發(fā)湖泛區(qū)底泥翻耕對藻源性湖泛的控制作用，跟蹤監(jiān)測不同翻耕深度和翻耕后時長，對照和處理組上覆水的視覺、嗅覺、營養(yǎng)鹽和揮發(fā)性硫化物濃度，以及表層底泥理化性質(zhì)的變化．結(jié)果表明，未翻耕的對照組在模擬實驗中發(fā)生了湖泛，翻耕10am和翻耕20cm差異不大，但翻耕后時長對湖泛發(fā)生影響較大．剛翻耕后(1d)即進行藻源性湖泛模擬的處理組發(fā)生了湖泛，但在程度和持續(xù)時間上均低于對照組；翻耕180d和540d的處理組，10cm和20am翻耕深度均未發(fā)生湖泛．合理選擇翻耕的施工時間，可以有效預防和控制湖泛的發(fā)生．關(guān)鍵詞：表層底泥；翻耕模擬；湖泛；理
3、化性質(zhì)；揮發(fā)性硫化物Efectsofplow-tillageonthepreventionandcontrolofalgae-causedblackbloomHEWei，CHENYuquan。，GUChunxin，F(xiàn)ANChengxin&CAILijing(1：Shanghailnvestigation，Design&ResearchInstituteCo．，Ltd．，Shanghai200434，P．R．China)(2：WuxiXishanDistrictWaterResourcesBureau，Wuxi214101，P
4、．R．China)(3：NanjingInstituteofGeographyandLimnology，ChineseAcademyofSciences，Nanjing210008，P．R．China)Abstract：Black—bloomwasanenvironmentissuethatoftenoccuredrecentlyandthepollutedsurfacesedimentWasknownasthemostimportantreasonforitsoccurrence．How—tillagewa$acost-e
5、ffectiveandpracticableengineeringmeasurewhichwasdesignedforinternalloadingcontro1．Basedonthesimulatedexperimentinlaboratory，efectsofplow—tillageonthepreventionandcontrolofalgae-causedblackbloomwasstudied．Thecolorandodor，nutrientconcentrationofoverlayingwater，thecon
6、centrationsofvolatilesulfurcompoundsandphysicochemicalcharacteristicofsedimentweremeasumd．Theresultswe~eshowedasfollows：blackbloomoccurredinbothcontrolchecksetandtreatmentsets1dayafterplow·tillageforthetwodiffirentplow-tilagedepths，butitsdurationanddegreeincontrolc
7、hecksetweremoreseriousthanthoseintreatmentsets1dayafterplow—tinage．Thetreatmentsetsof180and540daysafterplow—tillageofbothdepthsdidn'texperiencedblackbloomduringthewholesimulatedexperiment．Overall，the印一propriateprojecttimeofplow—tillageCanpreventtheoccu／Tenceandcont
8、rolthedegreeofalgae-causedblackbloom．Keywords：Surfacesediment；plow—tillage；blackbloom；physieohemicalproperties；volatilesulfurcompounds湖泛(blackblo
