英译中，一篇关于沙漠化的文章

Asof2003,landdesertificationinChinahas2.674millionsquarekilometers,accountingfor27.9%ofthetotallandarea,covering18provincesofthe471counties.Causedbydesertificationeveryyearindirecteconomiclossesamountedtomorethan540billionyuan.Andtherateofannualexpansionof3,436squarekilometers.Accordingtoreports,Chinahas10%ofthedesertifiedlandmanagement,by2010,Chinawillstrivetoachievethebasiccurbthetrendofexpansionoflanddesertification.By2020,Chinawillachievetheoverallreversalofdesertifiedland;to2050,forthetreatmentofdesertifiedlandwhocanbasicallybegoverned.ThencausedthecausesofdesertificationinChinawhere,whatmeasureshasChinatakentocombat?China'sdesertificationcontrolexpertresearcherMaWenyuanRadioVoiceoftheStraitsinaninterviewthatdesertificationismostcommononEarthintheformoflanddegradation,knownastheEarth'scancer.Earthpotentialoccurrenceofdesertificationareaofabout51.7millionsquarekilometers,accountingfor40%ofgloballandarea,ofwhichdesertificationwas36.2millionsquarekilometersofland.ThepotentialoccurrenceofdesertificationinChinarangeofabout330millionsquarekilometers,arefoundinChina'snorthwest,northandnorth-westernregion,accountingfor34.6%oflandarea.80%ofthelandhasoccurredinvaryingdegreesofdesertification.

ResultinginaboutthecausesofdesertificationinChina,MaWenyuan,researchersbelievethat,withincreasinglyfrequentduststorms,desertificationhasdrawnincreasingattention.Thecontinuousexpansionofdesertification,inadditiontoclimatechangefactors,mainlycausedbyirrationalhumanactivities,mainlycanbesummarizedassixexcesses-Kenabuse,deforestation,excessivegrazing,excessive,indiscriminateexploitationofwaterresourcesandhunting,Andwhilemanyfactorsareusuallyadditiveeffect,makingChina'sthegrowingtrendofdesertification.

First,theabuseofKen.Becauseofpopulationgrowthandshort-termbenefits,manypartsoftheunplanned,uncontrolledforreclamation,weedcuttingforests,butalsonotpreparedsoilandwaterconservationandecologicalmaintenance,leadingtodesertification,butalsoacceleratethedesertificationprocessinecologicallyfragileareas,openedayearpasture,RBItwoyearstheamountofsandbeamsbecomethreetofiveyears,occursfrequently.

Second,deforestation.Becausethemainsourceofenergyfortheburningofaridareasoffuelwood,withtheincreaseofpopulation,residentscutdowntrees,andevenusedsand-fixingintheshelterwerenotspared.

Third,andovergrazing.Becauselong-termoveruse,suchasdesertification,Grasslandoverloadrateof50%,inpart,Ievenupto300%,notonlycausedlarge-scalegrasslanddegradation,desertification,degradationofanannualrateofexpansionoftwoorthreeQianwanMu,andgrasslandproductivitythanfivedecreasedbyabouttenyearsonbehalfofthe30%to50%.Prairiewaistdeepwithoutthefiftiesandsixtiesdidnothip,kneeseventiesandeightiesdidnotankle,thejinglevividlyillustratethisdilemma.

Fourth,excessive.Springandautumneveryyear,theinfluxoflargenumbersofpeopleinInnerMongolia,Gansuandotherexploitationofhigheconomicvalueoflicorice,seaweedandherbs,plusvarioustypesoflarge-scaledeforestation,miningengineeringweeding,removalofvegetation,resultinginlargeareasofforest,grasslanddesertification.

Fifth,theabuseofwaterresources.AstheChinesewayofirrigation,floodirrigationisstillaseriouswasteofwaterresources,whiletheNorthwestandNorthChinadrought,coupledwithnorationalallocationofwaterresourcesandmanagement,excessiveuseofwaterupstreamoftheriver,causingdownstreamwatershortages,largeareasofdeadvegetation,landdesertification.Thelocalresidentshaveover-grazingsheep,butalsoacceleratesthegrasslanddegradation,desertificationrate,thecurrentdesertificationareahasreachedsixtythousandsquarekilometers,toprovideendlesssourcesofsandduststorms;otheruseofwaterresourcesisnotenough,alotofexploitationofgroundwaterhasresultedingroundvegetationwithered,solargeareasofdeadgroundvegetation,landdegradation.

VIhuntingabuse.Economicvalueofwildlife-richbecauseofhabitatdestructionorbyalargenumberofpoaching,thenumberdropped,tomaintaintheecosystembalanceofthefoodchainimbalance,indirectlycausingdesertification.SuchastheQinghaivolewasoriginallythehuntingfalconeatsalot,duetoalargenumberofstolenfishing,sothattheproliferationofrodents,alargeareagrazedgrassland,leadingtodesertification