大连水资源供需趋势分析

《大连水资源供需趋势分析》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、2』，’大连水资源供需趋势分析TheanalysisaboutthetrendofDalianWaterSupplyandDemandAbstractWraterisanecessaryconditionforeconomicdevelopment．Withrapideconomicdevdopmeut，DalianregioniSthegatewayinNortheastandallimportantcomponentoftheBohaiSeaeconomic．circle．sufficientwaterreso

2、urceinthisareaisanimportantprerequisiteforthedevelopment．Therefore,tostudyitswatersupplyanddemandchangesareconducivetoacorrectunderstandingofthestatusofwaterresourcesinDalianandthepromotionofthecoordinateddevelopmentofeconomyandecologyinthisregion．WatersyStemi

3、ncludeswatersupply,waterdemandandthebalancebetweensupplyanddemand．Availablewaterrefertotheamountofwatersuppliedbyengineeringfacilitiesintheyearswithdifferentlevels，withthedifferentguaranteedrates，whenwaterrequirementsandwatersupplyaretakeniutoaccount．Unfavorab

4、lewaterconditionsinthisarea，greatlyinfluencedbynaturalrainfall，itsrelevanceiSupto0．8507．TheaveragesannualprecipitationiS550—950mm，inthesouthoftheGoldenState，iSevenless：550—650mm，-Sotheprecipitationofwaterdoesnotmeetthewaterdemandinthisarea．TheutilizationrateiS

5、57．85percent．iSahightension．Thesurfacewater,accountingformorethan70％ofthetotalamountofwater,iSthemainsourceofwatersupplyinthisarea．Groundwaterisallimportantadditiontowater,waterreuseanddesalinationtoaddressallimportantmeansofwaterinsomeareas．Jnthisarea，theamou

6、ntofwaterdemandisgreatlyaffectedbyeconomicdevelopment,mostimpactedbyregionalindustrialoutputvalueandtherelevanceofindustrialoutputreached0．8579．Inrecentyears，thefluctuatiOIlSinwaterdemandhasshownaupwardtrend，agriculturalwateraccotmtstoalargerproportionofthedem

7、and．Industrialwaterconsumptionneedstoincreasefaster．Nowadaysthewatersupplyanddemandisbasicallyinbalance，butthereareagreatvolatility,andthereisallimbalancetrendsbetweensupplyanddemand．AfterLearnedmanycalculationmethodsathomeandabroad，quota-ealculationandtrend—a

8、nalysisareadopted．By2010，inthisarea1．6billioncubicmetersofwaterwillbeneeded，butwatersupplycapacityinthisareaisonlyl，566，500，000cubicmeters．By2020，waterrequirementinthisareaistoreac