Multi-Criteria Evaluation Model for Desertification Hazard Zonation Mapping using GIS

Journal of Applied Biological Sciences

Farhad HONARDOUST¹  Armin MASHAYEKHAN¹ 

关键词: Desertification;    Multi-Criteria Evaluation;    Fuzzy;    Analytical Hierarchy Process;    Trouti Watershed;    Iran;   

DOI  :  

学科分类：生物科学（综合）

来源: Nobel Bilim ve Arasirma Merkezi/Nobel Science and Research Cente

【 摘 要 】

Desertificationisoneofthemajorissuesthreateninghumancommunities.Manymethodshavebeendevelopedforassessmentandmappingofdesertificationhazard.Inthisresearchmulti-criteriaevaluationmethodwereusedtoinvestigatedesertificationprocessinTroutiwatershed.Asthefirststep,majordesertificationfactors(seveninformationlayers)including:soiltexture,aspect,rainfall,sensitivelyofgeologicalformationtoerosion,hydrologicsoilgroup,slopeandlanduseweredeterminedbasedonfieldstudy.Thenextstep,informationlayerweredigitizedinGISenvironmentandDigitizedmapswereconvertedtofuzzystandardmapsusingfuzzymembershipfunctionsinIDRISIsoftware.ThenweightofeachfactorwasdeterminedwiththecontributionofAnalyticalHierarchyProcess.Finally,thesusceptibleareastodesertificationinthestudyareawereidentifiedusingMulti-criteriaevaluationmethod.Theresultsshowedthat36.55,15.21,40.17and8.07%ofthestudyareawereclassifiedassevere,high,moderateandslowaffectedbydesertificationrespectively.LanduseandsensitivelyofGeologicalformationstoerosionwerethemostimportantfactorsaffectingdesertificationprocessinTroutiwatershed.ThegoalofthisresearchistoenableareasaffectedbydesertificationtobeassociatedwiththegenerationofknowledgeandtechniquesrelatedtoGISthatcansolvetheirspecificsproblemsinfieldofdesertificationcontrol.Thus,tocontributeabetternaturalresourcesmanagementanddevelopment.

【 授权许可】

Unknown