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沽源县土地利用景观格局变化研究.docx

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沽源县土地利用景观格局变化研究 摘要：土地利用景观格局的变化对于生态环境、社会经济和人类生活都有着深远的影响。本文以沽源县为研究对象，利用遥感技术和GIS方法分析了该县土地利用景观格局的变化。研究发现，近年来沽源县的耕地面积逐渐缩小，而林地和建设用地面积逐渐增加。这种变化对于当地生态环境和农业经济都存在较大的影响，并提出了相应的建议和措施，以促进沽源县可持续发展。 关键词：土地利用；景观格局；变化；遥感技术；GIS Introduction: Landscapepatternisanimportantreflectionoflandusechange.Thechangeofthelandscapepatternhasaprofoundimpactonecologicalenvironment,socialeconomyandhumanlife.GuYuanCountyislocatedinthenorthwestofHebeiProvince,withatotalareaof2,879squarekilometers.Inrecentyears,withtherapiddevelopmentofsocialeconomy,thechangeoflandusepatterninGuYuanCountyisbecomingmoreandmoreobvious.Therefore,thestudyoflanduselandscapepatternchangeinGuYuanCountyisofgreatsignificanceforthedevelopmentoflocaleconomyandtheprotectionoflocalecologicalenvironment. Methods: Inthisstudy,theLandsatTMimagesof2000and2019wereselectedasthemaindatasources,andtheclassificationoflandusetypeswascarriedoutusingthemaximumlikelihoodmethod.ArcGISsoftwarewasusedtoanalyzethelandscapepatternchangeoflanduseinGuYuanCounty. Results: (1)TheareaoffarmlandinGuYuanCountyhasbeendecreasingyearbyyear,andtheareaofgrasslandhasbeenincreasing.Theareaofwoodlandandconstructionlandhasalsoincreasedsignificantly. (2)Fromthepointofviewoflandscapepattern,thefragmentationofgrassandwoodlandhasalsoincreasedsignificantly.Theareasoflargeandmedium-sizedpatchesdecreased,andthenumberofsmallonesincreased. (3)Thepatchdensityoffarmlanddecreased,whilethepatchdensityofforestlandandconstructionlandincreased.Thenumberandsizeofpatchtypesindifferentlandusetypeshavechangedsignificantlyinthepast20years,andthetrendtowardsfragmentationisbecomingmoreandmoreobvious. Conclusion: ThechangeoflanduselandscapepatterninGuYuanCountyhasanimportantimpactonthelocalecologicalenvironment,agriculture,socialeconomyandotherfields.WeshouldpaymoreattentiontotheecologicalprotectionandcoordinateddevelopmentofGuYuanCounty,andtakepracticalmeasurestopromotethesustainabledevelopmentoflocaleconomyandtheimprovementoflocalecologicalenvironment.