簡(jiǎn)介：中文捅匿中文摘要林業(yè)資源型城市是指國(guó)家行政管轄縣以上、林業(yè)經(jīng)濟(jì)占主導(dǎo)地位、林業(yè)人口占城市人D“分之一以上的城市，這種城市是伴隨著森林資源的不斷開(kāi)發(fā)利用而逐步建立和形成的。伊春市素有“紅松故鄉(xiāng)”、“祖國(guó)林都”之稱，森林資源已經(jīng)成為其品牌性標(biāo)志。它經(jīng)歷了“因林而立、因林而興、因林而衰”的過(guò)程，是我國(guó)典型的林業(yè)資源枯竭型城市。由于森林資源長(zhǎng)期的過(guò)度采伐，導(dǎo)致伊春市目前可采林木資源已近枯竭，內(nèi)部四大矛盾凸顯，對(duì)林區(qū)經(jīng)濟(jì)活動(dòng)和可持續(xù)發(fā)展產(chǎn)生了影響。在這種背景下，本人在系統(tǒng)總結(jié)前人在資源性城市經(jīng)濟(jì)轉(zhuǎn)型研究成果的基礎(chǔ)上，以可持續(xù)發(fā)展理論、生態(tài)功能區(qū)劃理論、生態(tài)經(jīng)濟(jì)學(xué)理論、科斯產(chǎn)權(quán)理論和制度變遷理論為指導(dǎo)，通過(guò)借鑒國(guó)內(nèi)外資源型城市經(jīng)濟(jì)轉(zhuǎn)型的成功經(jīng)驗(yàn)，然后運(yùn)用SWOT分析法模型，揭示了伊春市作為典型的資源枯竭型城市經(jīng)濟(jì)轉(zhuǎn)型的必要性和重要性，為伊春市經(jīng)濟(jì)轉(zhuǎn)型出謀劃策。本文的研究重點(diǎn)是對(duì)伊春市經(jīng)濟(jì)轉(zhuǎn)型的SWOT模型分析以及提出其經(jīng)濟(jì)轉(zhuǎn)型的對(duì)策和措施。通過(guò)對(duì)伊春市的現(xiàn)狀和經(jīng)濟(jì)轉(zhuǎn)型的優(yōu)勢(shì)、劣勢(shì)、機(jī)遇和挑戰(zhàn)分析，以及結(jié)合其他學(xué)者的研究成果，提出了伊春市經(jīng)濟(jì)轉(zhuǎn)型應(yīng)從四個(gè)方面入手，即選擇合宜的經(jīng)濟(jì)轉(zhuǎn)型模式，加快推進(jìn)產(chǎn)業(yè)結(jié)構(gòu)調(diào)整；加強(qiáng)國(guó)家對(duì)林業(yè)資源型城市經(jīng)濟(jì)轉(zhuǎn)型的政策扶持；認(rèn)真實(shí)施林業(yè)資源型城市經(jīng)濟(jì)轉(zhuǎn)型的林權(quán)制度改革；加強(qiáng)生態(tài)功能區(qū)建設(shè)，全面提升生態(tài)建設(shè)水平。林業(yè)資源型城市的經(jīng)濟(jì)轉(zhuǎn)型問(wèn)題是一個(gè)復(fù)雜性、系統(tǒng)性工程，要正確處理好森林資源生長(zhǎng)量與采伐量之間的關(guān)系，永續(xù)利用森林資源，走出一條具有自身特色的可持續(xù)發(fā)展道路。關(guān)鍵詞經(jīng)濟(jì)轉(zhuǎn)型；資源型城市；SWOT模型；林權(quán)改革．黑龍江大學(xué)碩士學(xué)位論文ABSTRACTFORESTRYRESOURCESCITYREFERSTOTHECITY,WHICHABOVESTHECOUNTYLEVEL，F(xiàn)ORESTRYECONOMYTAKESDOMINANTPLACE，CITYFORESTRYPOPULATIONACCOUNTSFORMORETHAN1／3OFTHEPOPULATIONOFTHISCITY,THISKINDOFCITYISESTABLISHEDANDFORMEDBYTHECONTINUOUSDEVELOPMENTANDUTILIZATIONOFFORESTRESOURCES．YICHUNCITYISKNOWNAS‘‘THEHOMETOWNOFKOREANPINE”，‘THEFORESTCAPITALOFCHINA”，THEFORESTRESOURCESHAVEBECOMESYMBOLSOFITSBRAND．ITHASGONETHROUGHTHEPROCESSOF“STAND、BOOM、DECLINEDUETOTHERESOURCES‘OFFOREST”，WHICHISONEOFTHETYPICALOFFORESTRYRESOURCE。EXHAUSTEDCITIESINCHINA．BECAUSEOFLONGTERMEXCESSIVELOGGING，THEEFFECTIVEFORESTRESOURCESINYICHUNCITYARENEARLYEXHAUSTED，F(xiàn)OURINTERNALCONTRADICTIONSHIGHLIGHT，WHICHINFLUENCEECONOMICACTIVITYANDSUSTAINABLEDEVELOPMENTOFFORESTZONE．INTHISCONTEXT，ONTHEBASISOFSUMMARIZETHERESEARCHRESULTOFPREDECESSORINRESOURCESCITYECONOMICTRANSITION，BYTHETHEORYOFSUSTAINABLEDEVELOPMENT,ECOLOGICALFUNCTIONREGIONALIZATIONOFECOLOGICALECONOMICSTHEORY,THEORYOFINSTITUTIONALCHANGEANDCOASETHEORYASGUIDANCE，THROUGHDRAWINGLESSONSFROMTHEDOMESTICANDFOREIGNECONOMICTRANSFORMATIONOFRESOURCEBASEDCITY’SSUCCESSFULEXPERIENCE，ANDTHENUSESWOTANALYSISMODEL，REVEALSYICHUNCITYASATYPICALOFFORESTRYRESOURCEEXHAUSTEDCITY,THENECESSITYANDIMPORTANCEOFITSECONOMICTRANSFORMATION，GIVEADVICEANDSUGGESTIONSFORTHEECONOMICTRANSFORMATIONOFYICHUNCI夠THEEMPHASISOFTHESTUDYARETHESWOTMODELANALYSISOFECONOMICTRANSFORMATIONINYICHUNCITY,PUTSFORWARDITSECONOMICTRANSITIONCOUNTERMEASUREANDMEASURE．BASEDONTHEANALYSISOFCURRENTSITUATIONINYICHUNCITY,THEADVANTAGES、II

簡(jiǎn)介：本文研究了異構(gòu)數(shù)據(jù)集成的相關(guān)理論和技術(shù)，結(jié)合XML技術(shù)的優(yōu)勢(shì)，提出了一種基于XML文檔的通用數(shù)據(jù)交換方法，解決了數(shù)字林業(yè)技術(shù)中關(guān)系數(shù)據(jù)庫(kù)系統(tǒng)間的異構(gòu)數(shù)據(jù)的信息交換問(wèn)題。即在JAVA環(huán)境下，借助于JDBC、DOMAPI等技術(shù)，在兩個(gè)數(shù)據(jù)庫(kù)之間以XML作為媒介，實(shí)現(xiàn)對(duì)現(xiàn)有數(shù)據(jù)庫(kù)的訪問(wèn)。先規(guī)定數(shù)據(jù)庫(kù)結(jié)構(gòu)和XML文檔之間的映射關(guān)系，并將訪問(wèn)數(shù)據(jù)庫(kù)的結(jié)果生成DOM對(duì)象樹(shù)，經(jīng)過(guò)轉(zhuǎn)換成和目標(biāo)數(shù)據(jù)庫(kù)結(jié)構(gòu)相同的文檔后，再將XML文檔轉(zhuǎn)移到目的數(shù)據(jù)庫(kù)，從而實(shí)現(xiàn)了SQLSERVER2000和ACLE10G之間的數(shù)據(jù)交換?；谏鲜鏊枷?，進(jìn)一步實(shí)現(xiàn)了數(shù)據(jù)庫(kù)模式的邏輯備份，即數(shù)據(jù)的導(dǎo)入和導(dǎo)出處理。首先通過(guò)ACLE數(shù)據(jù)庫(kù)的數(shù)據(jù)字典讀取數(shù)據(jù)庫(kù)的定義，包括模式、表、字段、主鍵和外鍵等的信息，然后讀取表中所存儲(chǔ)的數(shù)據(jù)，分別寫(xiě)入XML文檔，利用這些XML文檔可以實(shí)現(xiàn)數(shù)據(jù)庫(kù)的恢復(fù)工作。最后，在XML文檔的存儲(chǔ)和傳輸應(yīng)用中，XML的安全性問(wèn)題已逐漸成為目前研究的熱點(diǎn)，針對(duì)該問(wèn)題，介紹了XML的安全標(biāo)準(zhǔn)，提出了利用現(xiàn)有的DES加密算法對(duì)XML進(jìn)行數(shù)據(jù)加密的解決方案，解決了數(shù)字林業(yè)中XML的安全問(wèn)題。整個(gè)研究的設(shè)計(jì)立足于通用、靈活、易于使用、可移植并且可擴(kuò)展。經(jīng)實(shí)驗(yàn)驗(yàn)證，該機(jī)制具有通用性，適應(yīng)廣泛。

簡(jiǎn)介：2016屆碩士專業(yè)學(xué)位研究生學(xué)位論文屆碩士專業(yè)學(xué)位研究生學(xué)位論文分類號(hào)F32學(xué)校代碼10446密級(jí)公開(kāi)學(xué)號(hào)2014300403論文題目論文題目鄒城與微山林業(yè)有害生物防治現(xiàn)狀與對(duì)策研究鄒城與微山林業(yè)有害生物防治現(xiàn)狀與對(duì)策研究院系系生命科學(xué)學(xué)院生命科學(xué)學(xué)院______________專業(yè)學(xué)位類別專業(yè)學(xué)位類別農(nóng)業(yè)碩士農(nóng)業(yè)碩士__________________專業(yè)學(xué)位領(lǐng)域?qū)I(yè)學(xué)位領(lǐng)域農(nóng)業(yè)科技組織與服務(wù)農(nóng)業(yè)科技組織與服務(wù)______論文指導(dǎo)教師論文指導(dǎo)教師楊月偉楊月偉教授教授____________論文作者者劉霰霰劉霰霰__________________2016年6月學(xué)位論文原創(chuàng)性聲明學(xué)位論文原創(chuàng)性聲明本人鄭重聲明所提交的學(xué)位論文是本人在曲阜師范大學(xué)攻讀碩士專業(yè)學(xué)位期間，在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作和取得的研究成果。除文中已經(jīng)注明引用的內(nèi)容外，本論文不包含其他個(gè)人（或集體）已經(jīng)發(fā)表或撰寫(xiě)過(guò)的研究成果。其他個(gè)人和集體對(duì)本研究所做的貢獻(xiàn)均已在論文中作了聲明并表示了謝意。作者簽名日期學(xué)位論文使用授權(quán)聲明學(xué)位論文使用授權(quán)聲明研究生在校攻讀學(xué)位期間論文工作的知識(shí)產(chǎn)權(quán)單位屬曲阜師范大學(xué)。學(xué)校有權(quán)保存本學(xué)位論文的電子和紙質(zhì)文檔，可以借閱或上網(wǎng)公布本學(xué)位論文的部分或全部?jī)?nèi)容，可以采用影印、復(fù)印等手段保存、匯編本學(xué)位論文。學(xué)?？梢韵驀?guó)家有關(guān)機(jī)關(guān)或機(jī)構(gòu)送交論文的電子和紙質(zhì)文檔，允許論文被查閱和借閱。（保密論文在解密后遵守此規(guī)定）保密論文注釋本學(xué)位論文屬于保密論文，保密期限為年。導(dǎo)師簽名作者簽名日期日期

簡(jiǎn)介：學(xué)校代碼10225學(xué)號(hào)05228學(xué)位論文林業(yè)局級(jí)數(shù)字化森林資源信息管理}指導(dǎo)教師姓名申請(qǐng)學(xué)位級(jí)別論文提交日期授予學(xué)位單位李林輝王霓虹教授東北林業(yè)大學(xué)碩士學(xué)科專業(yè)計(jì)算機(jī)應(yīng)用技術(shù)2005年05月論文答辯日期2005年06月東北林業(yè)大學(xué)授予學(xué)位日期答辯委員會(huì)主席論文評(píng)閱人東J參櫛蒜大學(xué)采L型；考、阜癤P刃壘冀公菇．東北林業(yè)大學(xué)碩士學(xué)位論文ABSTRACTTHEFORESTRESOURCEISMATERIALBASEOFFORESTRYPRODUCTION；THEINFORMATIONMANAGEMENTOFFORESTRESOURCEISABASICMANAGEMENTOFTHEFORESTRY．INORDERTOMANAGETHEFORESTRESOURCEBETTER,ITISNECESSARYTHATWESET印AFORESTRESOURCEMANAGEMENTINFORMATIONSYSTEM．THESYSTEMINCLUDESPROCESSING，SEARCHING，ANALYZING，EXPRESSINGOFSPATIALINFORMATIONANDATTRIBUTEINFORMATION．ITCANMAKEALLKINDSOFTHEMATICMAPSQUICKLYANDCURRENTLY,PROCESSSPATIALANALYSES，OFFERAIDDECISIONINFORMATIONFORMANAGINGAPOLIEYMAKERINTIME．APERFECTFORESTRESOURCEINFORMATIONMANAGEMENTSYSTEMWILLIMPROVETHEMODERNIZEDLEVELOFFORESTRESOURCEMANAGEMENT．THEOBJECTTHATWESTUDYISFORESTDRAWINGANDFORESTRESOURCEDATAOFLANGXIANGFORESTRYBUREAUANDXIAOBAIFORESTRYFARM．WEREALIZETHEVECTOROFTHESCANPICTUREWITHTHESOFTWARER2V．BASEDONSYSTEMSOFTWAREOFGEOGRAPHICALINFORMATION，ITISFORMEDTHATTHESPATIALDATABASEOFFORESTRESOURCETHROUGHSCANVECTOR,FIGUREEDITOR,ERRORCORRECTION．PROJECTING；WEUSETHEKEYWORDFIELDTOCONNECTCLASSIIFORESTRESOURCEATTRIBUTEDATAWITHTHESPATIALFORESTDATABASE；WEUSEDATAOFXIAOBAIFORESTRYTOANALYZEDISTRIBUTESTRUCTURECHARACTERISTICOFTHEFORESTRESOURCE，CREATEDEMMODELWITHCONTOURLINEJONTHISBASISOFDEM，WECANCREATETHESLOPE，ASPECT，HILLSHADEMODELETC．，WITHTHEDATAWEANALYZEFORESTGROWSPACEENVIRONMENT．ACCORDINGTOTHEMETHODSOFINFORMATIONSCIENCEANDSYSTEMENGINEERING,WITHPROGRAMMINGLANGUAGEVISUALBASIC6。0，USINGBASEDOFFACTIVEXGISPACKAGEMAPOBJECTS，WESETUPFORESTRESOLLRCEINFORMATIONMANAGEMENTSYSTEMOFLANGXIANGFORESTRYBUREAU．THESYSTEMREALIZESTHEVISUALMANAGEMENTOFFORESTRESOURCE；ITCANCARRYONTHEINQUIRY,EDITINGCOUNT，MAKINGMAPS，SPATIALANALYSISOFFORESTRESOURCEINFORMATION，DISPLAYINGMANYKINDSDATAFORMATS，UPDATINGATTRIBUTEANDGRAPHICDATAATONETIME．THISSYSTEMISFOUNDEDBASEDONTHEORYANDCHARACTERISTICOFGEOGRAPHICALINFORMATIONSYSTEM，ITCHANGESTHETRADITIONALFORESTRESOO．RCEINFORMATIONMANAGEMENTMODE，THESYSTEMFULLYUTILIZESTHEHISTORICALMATERIALSOFTHEFORESTRESOURCEDATA，IMPROVESTHEEFFICIENCYOFTHEINFORMATIONMANAGEMENTOFFORESTRESERVESANDENGINEERINGLEVELANDREALIZESTHEAUTOMATIONMANAGEMENTONFORESTRESOURCEINFORMATION，THEDATAMANAGEMENTWASINDEPENDENCEANDSTATICFORMERLY,NOWTHESYSTEMCANMANAGERESOURCEINFORMATIONWITHGISCHARACTERISTICSYNTHETICALLY,REALIZEANALYSISOFDIVERSIFIEDFORESTRESERVESINFORMATIONANDCOMPREHENSIVEUTILIZATION，THESYSTEMHASSOLVEDTHEACTUALNEEDOFFORESTRY’SBUREAU．ITOFFERSAPLATFO腫TOTHEFORESTRY‘SINFORMATIONBUILDANDFORESTRESOURCEINFORMATIONMANAGEMENT．KEYWORDSFORESTRESOURCEINFORMATIONMANAGEMENT；GIS；COMGIS．II．

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簡(jiǎn)介：東北林業(yè)大學(xué)博士學(xué)位論文迎春林業(yè)局森林資源及生物多樣性經(jīng)濟(jì)價(jià)值的動(dòng)態(tài)分析姓名王維芳申請(qǐng)學(xué)位級(jí)別博士專業(yè)林業(yè)經(jīng)濟(jì)管理指導(dǎo)教師郎奎建20060601ABSTRACT11LCEVERLASTINGUSEOFFOMSTRESOURCESHASALWAYSBEENTHEBASEOFFORESTRYSUSTAINABLEDEVELOPMENTNESTRUCTUREOFFORESTSTANDANDLANDSCAPEHASCHANGEDBADLYBECAUSEOFMANKIND’SBADLYEXPLOITATIONFORESTBIODIVERSITY’SQUICKLOSINGMAKESTHEECONOMICVALUEOFFORESTBIODIVERSITYMOREANDMOREIMPORTANTNOWTHEEVALUATIONOFECONOMICVALUEOFFORESTBIODIVERSITYHASBEENTHEDOMESTICANDINTEMATIONALFOCUSANDDIFFICULTTOPICUSINGTHEFORESTNLARFFTGEMENTDATAANDOTHERDATAOFPAST44YEARS，THESPATIALDATABASEOFFORESTRESOURCESWASSETUP；FORESTRESOURCESSTRUCTUREANDLANDSCAPEDYNAMICCHANGEWERESYSTEMICANALYZEDTHEECONOMICVALUEOFFORESTBIODIVERSITYANDITSDYNAMICCHANGEWEREANALYZEDTOOMAINCONTENTSASFOLLOWSFIRSLDYNAMICDEVELOPMENTANDCHANGEPROCESSOFFORESTRESOURCESDURINGTHEPAST44YEARSWEREAILAL刪WHICHINCLUDETHECHANGEOFVARIOUSLANDAREAFORESTORIGINAREADOMINANTFORESTSTANDTYPE，F(xiàn)ORESTAGEFORESTVOLUME，F(xiàn)ORESTPMDUCTIVITYANDFORESTDENSITYTHEREASONOFMAKINGFORESTRESOLLRCESWORSEWASSTUDIEDITISPOINTEDOUTTHATTHESCIENTIFICMETHODSHOULDBETAKENTEGULATETHESTRUCTUREOFFORESTRESOURCEINTHEFUTURE，THERESULTSHOWSTHATONONEHANDTHEAREAOFOPENFORESTLANDWASTELANDANDCUTOVERLANDDECREASEDBECAUSEOFSTRONGLYPLANTINGFORESTATIONANDMAKETHESTRUCTUREOFLANDUSEANDFORESTCOVERAGEREASONABLEATTHESAMETIME，COUIFEROUSFORESTANDBROADLEAFANDNEEDLELEAFMZXEDFORESTEMERGED；THERATEOFFORESTPLANTATIONBECOMESMORETHANTHEPERCENTAGEOF20，WHICHLEADTOMOREECONOMICVALUEONTHEOTHERHANDOTHERSERIESOFINTEMAISTRUCTURESOFFORESTRESOURCESAREMAL嫡USTEDINDIFFERENTDEGREE，WHICHCAN’TDEVELOPALLKINDSOFBENEFITOFFORESTWEL1NESTRUCTUREOFDOMINANTFORESTSTANDAREAANDFORESTAGEDEVELOPTOUNREASONABLETRENDWHICHTHEDOMINANTPOSITIONOFMATUREDANDOVERMATUREDFORESTYEASREPLACEDBYYOUNGGROWTHANDHALFMATUREFORESTIT’SDIFFICULTTOREALIZESUSTAINABLEDEVELOPMENTFROM1960TO1994，F(xiàn)ORESTVOLUMEDECREASED3313％BUTIN2004，F(xiàn)ORESTVOLUMEGOESUPTOTHELEVELOF1960，BUTFORESTPRODUCTIVITYDECREASEDTO296M3OLILL‘A，ANDTHEAVERAGEFORESTCOVERAGEDROPPED缸吼067TOO57，WHICHLEADTOBADECOLOGICALBENEFITSSECOND，THELANDSCAPEDYNAMICCHANGEFROM1960AND2004WASARLAIYZEDTHERESULTSHOWSTHATTHELANDSCAPEFURTHERFALLSINTOPIECES，BECOMESMOREFRAGMENTALFORESTISTHEMAINLANDSCAPETYPE，BUTITSQUALITYDESCANTIN1994，THENUMBEROFPATCHINCREASED5313％，BUTTHEAVERAGEAREAOFPATCHDECREASED3473％THEPATCHNUMBEROF2004IS24TIMESMORETHANTHATOF1994ANDTHEAVERAGEAREADECREASED5997％THENUMBEROFSMALLPATCHINCREASED，THENUMBEROFBIGPATCHDECREASED，VARIETYINDEXANDEVENNESSINDEXINCREASED，DOMINANCEINDEXDECREASED，MATUREDANDOVERMATUREDFORESTPATCHINCREASEDANDYOUNGGROWTHHALFMATUREFORESTDECREASEDANDTHELANDSCAPETYPEOF1994INCREASEDFORTHETYPEOFCLEARCUTCINGWASALWAYSADOPTEDANDTHEFORESTMANAGEMENTII

簡(jiǎn)介：IILL；意級(jí)公開(kāi)⑩西北農(nóng)林講杖大學(xué)業(yè)屆攻讀碩士學(xué)位研究生學(xué)位畢業(yè)論文陜西省農(nóng)村林業(yè)生物質(zhì)能源利用模式研究學(xué)科專業(yè)森林經(jīng)理學(xué)研究方向林業(yè)生物質(zhì)能源研究生徐曉倩指導(dǎo)教師劉光哲副教授合作教師渠美副研究員完成日_』間2017年4月24H國(guó)陜兩楊凌R／、7夕黝帆慚乳卸代號(hào)棱學(xué)學(xué)生究翮F㈣緲研究生學(xué)位畢業(yè)論文的獨(dú)創(chuàng)性聲明本人聲明所呈交的碩士學(xué)位畢業(yè)論文是我個(gè)人在導(dǎo)師指導(dǎo)下獨(dú)立進(jìn)行的研究工作及取得的研究結(jié)果；論文中的研究數(shù)據(jù)及結(jié)果的獲得完全符合學(xué)校關(guān)于規(guī)范西北農(nóng)林科技大學(xué)研究生學(xué)術(shù)道德的暫行規(guī)定，如果違反此規(guī)定，一切后果與法律責(zé)任均由本人承擔(dān)。盡我所知，除了文中特別加以標(biāo)注和致謝的地方外，論文中不包含其他人已經(jīng)發(fā)表或撰寫(xiě)過(guò)的研究結(jié)果，也不包含其他人和自己本人已獲得西北農(nóng)林科技大學(xué)或其它教育機(jī)構(gòu)的學(xué)位或證書(shū)而使用過(guò)的材料。與我一同工作的同事對(duì)本研究所做的任何貢獻(xiàn)均已在論文的致謝中作了明確的說(shuō)明并表示了謝意。研究生簽名稔蜘俄時(shí)盹如，7年C月名目導(dǎo)師指導(dǎo)研究生學(xué)位畢業(yè)論文的承諾F卜KLT本人承諾我的碩士研究生J努墾塵1約所呈交的碩士學(xué)位畢業(yè)論文是在我指導(dǎo)下獨(dú)立開(kāi)展研究工作及取得的研究結(jié)果，屬于我現(xiàn)崗職務(wù)工作的結(jié)果，并嚴(yán)格按照學(xué)校關(guān)于規(guī)范西北農(nóng)林科技大學(xué)研究生學(xué)術(shù)道德的暫行規(guī)定而獲得的研究結(jié)果。如果違反學(xué)校關(guān)于規(guī)范西北農(nóng)林科技大學(xué)研究生學(xué)術(shù)道德的暫行規(guī)定，我愿接受按學(xué)校有關(guān)規(guī)定的處罰處理并承擔(dān)相應(yīng)導(dǎo)師連帶責(zé)任。導(dǎo)師簽名帆如，7年廠月“日

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簡(jiǎn)介：東北林業(yè)大學(xué)碩士學(xué)位論文基于GIS的湯旺河林業(yè)局森林資源動(dòng)態(tài)分析姓名張怡春申請(qǐng)學(xué)位級(jí)別碩士專業(yè)森林經(jīng)理指導(dǎo)教師郎奎健20060601ABSTRACTINTHISSNJDYMEFORESTDIS劬UTIONM印SOFL968AILD2004ITLMEL抽GWAN曲EBWEAUOF，F(xiàn)ORES缸Y，HEILON萄IAILGPRO、，IILCEWERESTILDIEDASMAINDATABASE，COMBIILEDWITHTHENATURAL帆Y鋤DM趾AGEMEMHISTORYOF幽E盯EASTILDIED，、ⅣITHTTLEGISASTECHILICALSUPPON，TTIEGEOGRAPHJCDA協(xié)BASEOF山EFORESTRESOURCESIN1968AND2004WASES詛BLISHEDAFLDMEMG砌REC哪NCEOFMETⅥ，OSTAGESOFFORESTRESOURCESWASREALIZED．THESTMCTTLMLCHANGESOFFORCSTRESOURCESWASOBTAINCD吐啪U曲MEAILALYSISOFMEV撕ATIONSOFQUAIL血IES，卯ESANDSPACEDIS拓IB塒ONSOFFO搬|TSANDFORESTLAILDSRESOURCES，缸也EHNORE，吐LEVARIATIONS0FLANDSCAPEPA札EMSCAUSEDBY也EVAIIATIOILSOFFBRCSTRESOURCES蚰MCTILRESWEREREVEALEDBASEDON廿LEANALYSISOFLANDSC印ES訂UCTUIES．1‰U(xiǎn)曲THEINTE鏟ATION“DEMANDPRCSENTST秈OFLAILDSC印E，THERELADONSMPBE“VEENFORESTRESOURCES柚DECOLOGICALENVIRONMENTWASRENECTEDMOREOBJECTIVELY．THESTILDYWASCONDUCTED矗DMTHEFOLLO麗NGASPECTS1．NEQLLALI哪QUANTITYALLDSPACEDIS仃IBUTIONSIM砒IONOFTLLEF0瞅TRESOURCESI11THEBUREAUIN1968鋤D2004WETEMADECLEARLY，也EDATABASEI11TE擎ATEDWI血也EAT晡BUTEANDSPACEDATAOF細(xì)ESTRESOURCESWASESTABLISHED，GISOFTWOSTAGESWASFONNED，MCDIG蹦RECO咖CTIONOFFORESTDISTRIBUTIONWASREALIZED．INT11IS40YEARS，THESTUDYSHOWEDTLLAT舭AREASOFFORESTL柚DAILDSLLNLBBERYLAILDINCREASED，TILEFORESTCOVERRATE鋤DLANDUSECAPABIL時(shí)INCREASED，AREASOFART訪CIALFORESTINCREASEDMUCH，THCSⅡUCTUREOFFORESTCATEGORYWASIMPROVED．THEAMO吼TOF昏OWINGSTOCKDECRE嬲EDMUC也MEAGE伊OUPANDDENSITYSTMCTILREOFFORESTSTAⅡDWASOFSEVEREMALADJ咖ENT，幽E枷。吼TOFGROWMINCREASEDLMLE．MEAILWHILE，MEAREASOFL鋤DWITHOUTFORESTINCREASED姐DITSDIS缸B嘶ONEXTENDED．2Q刪TA_TIVEDEPICTSANDQUAI址岫VEANALYSISFORTBESPACEDISTRIBUTIONANDTRA工1SFONNATIONOFFORESTRESOURCESINTLLEAREADLLRINGNEADY40YCARS、VEREPERFONILED．DUETOLONGPERIODNENSIVEAILDEXCESSIVEFCLLIⅡG，MEINILERSHUCTUREOFFORESTWASDESTROYEDSCVERELYTHOUGHNOWADA【YS廿1EFORCEOFRESOURCEMALLAGEMENTARLDREFORESTATIONWASTI曲TEN，讓LEFORESTAREASI11CREASED，ITWASSTILLU瑪EDTOIIILPROVETHE鋤OUNTOFGROWILLGSTOCK，F(xiàn)ORCSTST】．UCTURE柚DAGEGROLLPSS扛1LCTURE、VITLLSCIE而FICMETLLODSANDE虢CTIVEMEASURES．3THEVARIATIONSOFFORESTLANDSCAPESTRILCTUREWERECOMPAREDANDANALYZEDBASEDONTHCMETHODSOFL鋤DSC印EEC0109Y．QU柚廿TATIVEAILALYSISWASPERFO珊EDFORTHESPACECHARACTERSINMESTAGESOF1968AND2004ATⅡLE唧ECTOFLANDSCAPEECOLO肼ME衄1SFO咖ATIONPROBABILITYWASCO藍(lán)RNLEDFORALLL【INDSOFLANDSCAPE帥ES．111ERCSUHSINDICATEDTHATLANDSCAPETYPESINCREASED，TLLEQU姐T畸OFPATCHDECRE{撼ED，NLEAVEMGEAREAOFPATCHIⅡCREASED，T11EPROPONIONOFNC甜MATUFEFOREST，MATUREFBRESTANDOVE砌ATUREDFORESTI11THELAILDSCADEDECREASED，THEPROPONIONOFCOLLIFEROUSFORESTANDVALUABLEBROADLEAFBMAD．1EAVEDFORESTIFLCREASED，THEDATCH．II．

簡(jiǎn)介：東北林業(yè)大學(xué)碩士學(xué)位論文林業(yè)有害植物飛機(jī)草入侵的生態(tài)機(jī)理研究姓名陳華峰申請(qǐng)學(xué)位級(jí)別碩士專業(yè)植物學(xué)指導(dǎo)教師祖元?jiǎng)偼跷慕?0060601摘要長(zhǎng)為主的V生活史型。如飛機(jī)草處于F生境，合成的拮抗物質(zhì)ANTAGONISTICSTRESSSUBSTANCEA物質(zhì)，如生物堿、單寧等次級(jí)代謝產(chǎn)物，主要用于保護(hù)自身抵抗干旱、高溫等不良環(huán)境，故形成以無(wú)性生殖為主的C生活史型。如飛機(jī)草處于D生境，合成的促繁物質(zhì)PROPAGATIONPROMOTINGSUBSTANCE一一P物質(zhì)，如黃酮、GA等，主要用于植物細(xì)胞減數(shù)分裂以產(chǎn)生大量種子，故形成以有性生殖為主的S生活史型。6飛機(jī)草花粉和柱頭的特殊結(jié)構(gòu)，如花粉具刺狀紋飾和花柱密集皺褶，使得飛機(jī)草傳粉授精成功的機(jī)率大增，因而產(chǎn)生大量果實(shí)。而且飛機(jī)草種子成熟季節(jié)恰值干燥多風(fēng)的旱季，短暫的成熟期、較輕的果實(shí)千粒重為0164曲、帶有冠毛這些適合風(fēng)傳播的特征，都促進(jìn)了飛機(jī)草的快速傳播蔓延。由于飛機(jī)草種子輕且具冠毛，其近距離傳播主要靠風(fēng)力和水流，飛機(jī)草種子的傳播距離隨著風(fēng)速的增大而增大，2～3級(jí)風(fēng)下可傳播1622M，當(dāng)達(dá)到4級(jí)風(fēng)時(shí)，傳播距離可達(dá)到25M。飛機(jī)草種子可沿輸水灌溉渠、排水溝及湖面等傳播，調(diào)查結(jié)果表明，種子密度可達(dá)2～8個(gè)／100CM2。中距離傳播主要靠人畜及農(nóng)用車(chē)系統(tǒng)的攜帶，而遠(yuǎn)距離的傳播主要依賴于公路網(wǎng)系統(tǒng)的大型機(jī)動(dòng)車(chē)系統(tǒng)，發(fā)達(dá)的道路網(wǎng)及大型交通工具是遠(yuǎn)距離傳播的主要途徑。大規(guī)模的土壤一次性破壞，又為飛機(jī)草種子快速與土壤表面結(jié)合奠定了基礎(chǔ)。7在不同道路條件下，飛機(jī)草選擇不同的生活史型。高速公路旁土壤裸露度較低，僅為3％，飛機(jī)草種子很難與土壤接觸，從而導(dǎo)致種子密度及幼苗密度也較低，僅為6個(gè)／100CM2和15株／M2，但飛機(jī)草個(gè)體高大，達(dá)到3～5M，飛機(jī)草生活史型屬于V型。省、縣級(jí)公路旁飛機(jī)草數(shù)量較少且個(gè)體生長(zhǎng)不良，僅為367株／M2，但土壤裸露度逐漸增加，從50％增加到90％，種子密度及幼苗密度也逐漸增大，范圍分別為2756125個(gè)／100CM2和553767株／M2，生活史型屬于S型與C型之間的過(guò)渡類型，即SC型。鄉(xiāng)級(jí)公路旁土壤經(jīng)常被牲畜踐踏，土壤孔隙結(jié)構(gòu)產(chǎn)生一定的破壞，造成土壤緊實(shí)度較高，由于土壤裸露度較大，在1466％～8666％之間，鄉(xiāng)級(jí)公路飛機(jī)草個(gè)體數(shù)量較大116735株／M2，種子密度也較高2833～30個(gè)，100CM2，因此，飛機(jī)草在鄉(xiāng)級(jí)公路旁呈線狀單優(yōu)分布，生活史型屬于S型，又由于土壤緊實(shí)度較高，有向C型過(guò)渡趨勢(shì)。村路旁土壤裸露度均較大，在50％R60％之間，最大可達(dá)90％，且土壤較疏松，表層土壤緊實(shí)度較低。因此，村路旁飛機(jī)草個(gè)體數(shù)量較大1167～3767株／M2，種子密度也較高2833“125個(gè)／100CM2，飛機(jī)草在村路呈集中帶狀或團(tuán)狀分布，形成單優(yōu)群落，生活史型屬于S型。8生境類型不同，飛機(jī)草完成生活史的對(duì)策也不同，這是飛機(jī)草形成不同生活史型的前提條件。采用生境劃分法和形態(tài)性狀主成分分析法對(duì)飛機(jī)草生活史型劃分的結(jié)果表明土丘生境有利于飛機(jī)草的生長(zhǎng)發(fā)育，飛機(jī)草選擇了以營(yíng)養(yǎng)生長(zhǎng)為主的V生活史型，最大程度地?cái)U(kuò)展地上空間占據(jù)環(huán)境。路邊生境、林下生境有類似土丘生境的發(fā)育特點(diǎn)，為VS型，有向S型過(guò)渡的趨勢(shì)。而撂荒地生境最不利于飛機(jī)革生長(zhǎng)的環(huán)境，在這樣的環(huán)境下，飛機(jī)草以犧牲營(yíng)養(yǎng)體為代價(jià)，盡可能地產(chǎn)生最多的種子以