基于dem的地貌分析研究——以寧鎮(zhèn)地區(qū)為例

1、：一一——#iir”yg釃螄、r_’。：，一。rl，‘等等等≮鰳、甍瑟一，jj：、∥1。5’。：南京縛。菇爻參。_i。，?！輎、碩士、學(xué)位論文園基于DEM的地貌分析研究一以寧鎮(zhèn)地區(qū)為例作者院系指導(dǎo)教師學(xué)科專業(yè)王秀西地理科學(xué)學(xué)院陳曄iⅡ教授自然地理學(xué)鬻鬻。ABSTRACTResearchonGeomorphologyAnalysisBasedonDEM—ACaseStudyofNingzhenRegionABSTRACTDigitalE

2、levationModelisbasicdataofterrainanalysisbyGISTerrainfactorssuchasslope，aspect，elevation，surfaceroughness，andsoon，canbeextractedbyutilizingDEMbasedonGISThemaincontentofGeomorphologyresearchisterrainanalysis，itincludessuc

3、hasheightsliceanalysis，slopeanalysis，gullydensityanalysisandsoonDuringterrainanalysis，heightsliceanalysiscanreflectsurfaceformofrelief，slopeisanimportantfactorofreliefitisakeyfactortoimpactonthewater5soillossGullydensity

4、canbeusedtoindicatelocalclimate，geologyandgeomorphologyIthasanimportantmeaningforsurveyingwater6soillossandsustainingwaterssoilSurfacerolling，surfaceincision，surfacecoarseness，andsoon，canreflectchangeofrollingandindicate

5、degreeoferosionofsurfaceSo，ithasaveryimportantmeaningtoresearchcharacterandruleofterraininformationdistributingTakingtwosamplesinNingzhenasexamples，bycombiningtherasterdataofDEM，Geologyandlanduseinresearchregions，themeth

6、odextractingGeomorphologyinformationofdifferentGeologystratumwasgotbyreferenceothers’scientificresearchandmyownprophaseresearch，meanelevationofdifferentGeologystratum，meanslopeofdifferentGeologystratum，gullydensityofdiff

7、erentGeologystratum，andsoon，werefinishedcalculatingbyGISHereDEMdatawereproducedbydigitizingthecontourlineGeologydataweregotfromgeologymapRasterdataoflanduseweregeneratedbychangingthe1：250000recurdataofJiangsulanduseThen，

8、correlationandillustrationandcomparisonwereusedtoanalyzeterraindataofdifferentGeologystratum，someconclusionsweredrawnasfollows：First，Terrainfactorsofothers’GeographicalelementcanbeextractedquicklyandconvenientlybasedonDE