基于GIS技術(shù)的福建省主要桉樹樹種用地適宜性及風(fēng)險(xiǎn)評(píng)價(jià).pdf

1、福建農(nóng)林大學(xué)碩士學(xué)位論文基于GIS技術(shù)的福建省主要桉樹樹種用地適宜性及風(fēng)險(xiǎn)評(píng)價(jià)姓名：張慧申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：土地資源管理指導(dǎo)教師：邢世和20050401EvaluationonSuitabilityandRiskofLandResourceGrowingStapleEucalyptusSpeciesinFujianBasedonGISABSTRACTThisstudyisbasedonGISandmathematicalmodelF

2、irstlytheobjectsofevaluationincludeforestland，orchard，teagarden，meadow，uncultaredgrassland。sandlotandbareland，theunitofevaluationis250mX250mgridSecondly，onthebaseofprobingandbuildingthespatialandattributivedatabaseoffact

3、orsofsuitabilityevaluationthroughmodelssuchasdigitalelevation，trend，thiesseninversedistanceweightedinterpolationandttest，makinguseoffactor，theoryanalysisandcorrelationInOdel。andselectandestablishthefactorsystemofevaluati

4、ononsuitabilityandriskoflandresourcegrowingstapleeucalyptusspeciesFinallY。itevaluatesthesuitability，qualityandriskoflandresourcegrowingstapleeucalyptusspeciesbymeansofthemethodofextremelimitindexsigncomparison，weightedag

5、gregativeindexnumberanddynamicclassificationmodelTheresuitisfollowing：1Thecoefficientsofcorrelationwhichreflectmodelsbetweenextremelowtemperatureandaverageofextremelowtemperatureandlongitude(^)1atitude(廬)，elevation(^)are

6、0925and0962，thoseallreachthemostremarkablelevel，theresulthereinbeforeshowsthatthetrendmodeloftwopoweristhebestmodelwhichcanpreciselyreflectthespecialdatumsuchasextremelowtemperatureandaverageofextremelowtemperatureThetva

7、luesbetweentruevaluesandvaluesofthetwofactorswhichcalculatebycombiningthetrendmodeloftwopowerandinversedistanceweightedinterp01ationoffourpowerandthreepower，theresultsshowthatusingmodelsofinterpolationupwarditcangettheda

8、tumofthetwofactorswhichhavethebestprecisionandapplytotheprecisecalculationofspatialdatumsuchasextremelowtemperatureandaverageofextremelowtemperature2Twenty—onefracorsincludingextremelowtemperature，averageofextremelowtemp

9、eratureslope。aspect，thethicknessofsoil，modulusofcorrasion，quantityofsalt，theorganicsubstance。pHofsoil，thewholephosphorusthewholekaliumstickygrainofphysics。pHofyearlyacidrainfall，TSP，locationofregionthevalueoftrafficunder

10、stand，accumulativetemperaturebeyondtendegree，yearlynon—frostday，theyearlyhourofsunlightandyearlyrainfallcanbethedominantfactorsofevaluationonsuitabilityandriskoflandresourcegrowingstapleeucalyptusspeciesinFujian3InFujian

11、theareaofsuitable1andofEucalyptuscamaduleasis(cloneof2and8)：Eucalyptuscamaduleasis(cloneof1and34)Eucalyptusdunnii(seedling)，Eucalyptusgrandis(cloneof2。3andAlgAll)。Eucalyptusurophyllacamadulensis(cloneof洲舶卜l，DHⅢ，陰卅landTH坼