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基于生态足迹的土地生态承载力动态变化研究──以成都市为例(英文).docx

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基于生态足迹的土地生态承载力动态变化研究──以成都市为例(英文) ResearchontheDynamicChangesofEcologicalCarryingCapacityofLandBasedonEcologicalFootprint-ACaseStudyofChengduCity 1.Introduction Theecologicalcarryingcapacityoflandhasbecomeanimportantindicatorofsustainabledevelopment.AsamajorcityinwesternChina,Chengduhasbeenrapidlydevelopinginrecentyears,withasharpincreaseinpopulationandurbanization.Thishasbroughtgreatpressureonthecity'secologicalenvironment.Therefore,itisnecessarytostudythedynamicchangesoftheecologicalcarryingcapacityoflandinChengducitybasedontheecologicalfootprint. 2.LiteratureReview Studieshaveshownthattheecologicalfootprintisaneffectivemeasureoftheecologicalcarryingcapacityofland.Manyscholarshaveusedtheecologicalfootprinttoassesstheecologicalcarryingcapacityofvariousregions.Huangetal.(2016)usedtheecologicalfootprintmethodtostudytheecologicalcarryingcapacityofChengduandfoundthatthecity'secologicalcarryingcapacitywasinsufficient.However,thisstudywasbasedondatafrom2006to2014,anddidnotreflectthecurrentsituation.Therefore,itisnecessarytore-evaluatetheecologicalcarryingcapacityofChengducitybasedonthelatestdata. 3.Methodology TheecologicalfootprintmethodwasusedtostudythedynamicchangesoftheecologicalcarryingcapacityoflandinChengducity.Theecologicalfootprintiscalculatedbymultiplyingtheareaoflandusedbyitscorrespondingproductivityfactor,andthensummingupthetotalecologicalfootprintofalllandtypes.Theecologicalcarryingcapacityoflandisthemaximumsustainableecologicalfootprintthataunitoflandcansupport.Inthisstudy,wecollecteddataonlanduse,population,andeconomyinChengdufrom2014to2018,andcalculatedtheecologicalfootprintandecologicalcarryingcapacityofland. 4.Results From2014to2018,thetotalecologicalfootprintofChengduincreasedfrom14.87millionhectaresto16.03millionhectares,anincreaseof7.8%.Amongthem,theecologicalfootprintoffoodproductionincreasedby60.4%,andtheecologicalfootprintofhousingandtransportationincreasedby39.3%and19.8%,respectively.TheecologicalcarryingcapacityoflandinChengdudecreasedfrom6.03mil