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气候变化和人类活动对淮河流域中上游地区径流影响研究（英文）.docx

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气候变化和人类活动对淮河流域中上游地区径流影响研究（英文） ImpactofClimateChangeandHumanActivitiesontheRunoffintheUpperandMiddleReachesoftheHuaiRiverBasin Introduction TheHuaiRiverBasinisoneofthelargestriverbasinsinChina,coveringanareaofabout270,000squarekilometers.Itplaysasignificantroleintheeconomicandsocialdevelopmentoftheregion.However,duetotheimpactofclimatechangeandvarioushumanactivities,waterresourcesintheHuaiRiverBasinhavebeenseverelyaffected.Therefore,itisessentialtostudytheeffectsofclimatechangeandhumanactivitiesontherunoffintheupperandmiddlereachesoftheHuaiRiverBasin. ImpactofClimateChangeonRunoff ClimatechangeisasignificantfactorthataffectstherunoffoftheHuaiRiverBasin.Inrecentyears,thetemperatureandprecipitationintheupperandmiddlereachesoftheHuaiRiverBasinhaveincreasedsignificantly.Therisingtemperaturehasledtothemeltingofglaciers,causinganincreaseintheflowofrivers.Atthesametime,increasingrainfallhasledtoanincreaseinthesurfacerunoffofthebasin.However,duetoglobalwarming,thefrequencyofextremeweathereventssuchasdrought,floods,andstormshasalsoincreased,whichhashadaconsiderableimpactontherunoffintheHuaiRiverBasin. Inaddition,climatechangehasalsoaffectedevapotranspiration,whichplaysacrucialroleinthewaterbalanceofthebasin.Withtheincreaseintemperature,evapotranspirationhasalsoincreased,resultingindecreasedsurfacerunoffandgroundwaterrecharge.Therefore,itisessentialtostudytheimpactofclimatechangeontherunoffoftheHuaiRiverBasintodevelopappropriatestrategiesforwaterresourcemanagement. ImpactofHumanActivitiesonRunoff Besidesclimatechange,humanactivitiesarealsosignificantfactorsthataffecttherunoffoftheHuaiRiverBasin.Thedevelopmentandgrowthofhumanactivities,includingurbanization,agriculturalactivities,andwaterdiversionprojects,haveledtochangesinthelandscapeofthebasin,resultinginchangesinthehydrologicalcycleofthebasin. UrbanizationhassignificantlyaffectedtherunoffoftheHuaiRiverBasin.Withtherapiddevelopmentofurbanization,theamountofimpervioussurfacessuchasroads,buildings,andpavementshasincreasedsignif