关于gis的小流域土地资源生态适宜性评价体系的研究

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1、温州医学院硕士学位论文StudyonLandResourcesEcologicalSuitabilityEvaluationSystemofSmallWatershedBasedonGISAbstractUrbanizationisallimperativestagetowardmodernizationforanycountryorregion．Notonlydoesitbringingreateconomy,butalsothesocialbenefit．However’theecologicalenvironmentpressurehasnotbeenrelievedtimelyduet

2、otherapiddevelopmentofurbanization，andaseriesofproblemscomeout．Wenzhoucityisaspecialplace、析mthecharacteristicofmanysimilarproblemsmainlyinthefollowingrespects：landresourceshortageisserious，邪aresultthehousepriceisrisingsharply．Theaveragepriceofnewhousesreaches20，050yuanuntilJanuary,2010⋯rankingnlirdt

3、hroughoutthecountry．Thereislittlefarmlandperperson，reachingonly0．31acre．Thegrainself-sufficiencyinWenzhouisonly35％．UnreasonablelandresourceexploitationandutilizationhasreducedthelandresourcequalityrestrictedbynaturefactorssuchaStopography,eta1．Mostoftheurbanwaterispollutedseriously,andthewaterqualit

4、yisbeyondVstandard，弱aresulttheecologicalsuitability·degreeoflandresourcearoundthereisnothi曲．Alltheabovewilldefinitelyimpacttheeconomydevelopment．Therefore，landresource，弱thejointandcarrierofotherresources，shouldbeevaluatedcomprehensively．Thepaperreviewedthedevelopmentofthegeographyinformationsystem(G

5、IS)andthesmallwatershed，andexpoundedthetheoryandmethodofevaluatinglandresourceecologicalsuitabilityindetailsatfirst．Then，putforwardtheconceptofevaluatinglandresourceecologicalsuitabilityonsmallwatershedbasedonGIS．Afterthat，usedtheknowledgeoflandresource，environmentengineering，ecology,geographyinform

6、ationsystemsynthetically；putemphasisonthelandresourceuseandecologyprotectionofwatershedadoptingthetechnologyofGIS．Finally,theevaluationsystemofsmallwatershedWaSsetuputilizingthetheoryresearchandtheactualcaSe，consideringthenaturecondition，thesocialeconomy,thelocationandtheecologyofwatershedcomprehens

7、ively．AndtheweightofindexesWaSevaluatedbyAnalyticHierarchyProcess．ThescoreofeachunitWaScalculatedbysynthesizedevaluationmodel．Atlast,thearableland，thegarden,theforestlandandthean-usedlandsuitabilityof