2023年全國碩士研究生考試考研英語一試題真題（含答案詳解+作文范文）_第1頁
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1、UniversityCode：10225RegisterCode：080363DissertationfortheDegreeofMasterStudyontheimpactsofclimatechangeonforestfiresinDaxing’anlingMountainsCandidate：Supervisor：AssociateSupervisor：AcademicDegreeAppliedfor：Speciality：Dat

2、eofOralExamination：University：ZhangYanpingProfHuHaiqingMasterEcologyJuly2008NortheastForestryUniversity東北林業(yè)大學碩士學位論文AbstractByusingmeteorologicaldatafrom1972to2005andforestfiresdatafrom1965to2005inDaxing’anlingMountainscl

3、imatechangeandforestfiresdistributionpatternwereanalyzed，andclimatechangeimpactdonforestfireswasstudiedStudiedclimatechangefrom1972to2005inDaxing’anlingMountains，themajorconclusionsofthestudyareasfollows：neclimatewasdeve

4、lopedtobecomewarmeranddrierespacioulyinsummerneannualaveragetemperaturehasbeenincreasingobviouslyinrecent34years，temperaturejumpsappearsaround1988Sinceenteringthe21stcenturythetemperaturecontinuedtoincrease，espacioulyin2

5、002and2005yearsTheprecipitationandrelativehumidityhavegreatfluctuationandtakeonaslightincreasetrendInthelate19907S，theprecipitationwasmoteabundant，relativehumidlywasgreaterFrom1999to2005，theprecipitationandrelativehumidi

6、tywerereducedsignificantlyItwasabnormallessrainin2002and2005andtheaverageannualrelativehumidityreachedthelowestlevelin2005Forestfiresdistributionpatternwasanalyzedfrom1965to2005thenumberofforestfiresandforestfiresareasho

7、wobviousstageinDaxing’anlingMountmnsThenumberofforestfiresandforestfiresareawerelessin1990’S，after2000，theyincreasedsignificantlythefiredisasterswereabnormalserious弧enumberoflightningfireandfireareasinsummerwerethelarges

8、tincreasing，after2000，averageannualnumberoflightningfireswere38times，itwasmorethan12timesofaveragelightningfirefrom1972to1999Enteredthe21stcenturywithsummerdronght，forestfireshaveincreasedgraduaUyAugustisnotabsolutesecuf

9、ityitshouldbeattentedThelengthofforestfireseasonhadgreatfluctuationFromthemid一1970stothemid1980s，thelengthofforestfireseasonwasmOTeDuetOthestrengtheningofforestfiremanagement，thelengthofforestfireseasondeducedin1990’Sned

10、aysofforestfiresweremoreincreasingafter2000than1990’sThelateofforestfireseasonhadpostponedabout10daysneincreaseofthelengthofforestfireseasonmeansthatforestfiresituationwillbemoreseriousAnalyzingtherelationofforestfiresan

11、dmeteorologicalfactors，forestfiresnumberwereseparatelycorrelatedwiththeprecipitationandrelativehumiditySmmerdroughtwastheworst，andthemostofforestfiresnumberwasinsummerUsehumidfactorcanpredicttheoccurrenceoflightningfires

12、Comparisoinoftherelationshipbetweenforestfiresnumbersofdifferentregionsatdifferentstagesaridthemeteorologicalfactors，theresultsshowedthatitwasthemostseriouswaFnlerregioninJiagedaqi，andtherateofincreaseofforestfiresnumber

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