地面沉降55873LandSubsidenceByNancyDefinitionLandsubsidence:Itisakindofdownwardmovementoftheearthsurface,:theearth‘scrusttectonicmovement.(地壳的构造运动)Humancause:a:Suctiongroundwaterb:Miningsolidmineralc:Theexploitationofoilgasd:Suctionbrine(卤水)InfluencesDestroyingbuildingsandproductionfacilitiesDoingharmtotheconstructionandresourceexploitationCausingseawatertoflowbackwardSevereareasMorethan50citiesinChinahavewide-,NorthChinaandplainareascoveringNorthChina'sShanxiprovinceandNorthwestChina':Shanghai,Tianjin,Beijing,Xi’anandTaiyuanConditionsinUSAMostareashavebeensufferingthelandsubsidence,,,,(落水洞)Goodnews:,2012,thefirstplanningofthelandsubsidencecontrolwaspassed,whichmeansthatanationwidelandsubsidencecontrolhasbeenputontheagenda.
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