東天目山種子植物區(qū)系及其植被恢復(fù)狀況.pdf

1、華東師范大學(xué)碩士學(xué)位論文東天目山種子植物區(qū)系及其植被恢復(fù)狀況姓名：劉思涵申請學(xué)位級別：碩士專業(yè)：植物學(xué)指導(dǎo)教師：李宏慶20080501Abstract：EastTianmuMoutainslocatedonthewestofLin’anThedistancebetweenLin’anandthisareaisabout25kmItbelongstothesouthofnorthsubtropicalclimateregioninthen

2、orthofsoutheastcoastalhillymountainareaofChinaSothecharactersoftheclimatearcplaintohillymid—subtropictonorthsubtropictransitionalformwitllstrongmosoonwindfourdistinctiveseasons，modcrateclimate，Plentifulrainwaterandfeasib

3、leillumination624seedplantsWel“Ocollectedwhichinclude65cultivatedorexoticplantsThefloraoftheseedplantscomposedof559specieswhichbelongto360generaand112familiesTheyconsistof13speciesofGymnosperm(5familiesandl0genera)，459刪鶴

4、ofDicotyledon(96familiesand292genera)，and87speciesofMonocotyledon(1lfamilies58genera)ThecharactersofEastTianmuflorainclude：comparativelysparseinspecies，晰nlonly1／3speciescomparedtoWestTianmuMt；richnessoffamiliesandgeneraa

5、ppearedinancientgeologicalhistoricalperiods；diversityofareal—types，with14areal—typesand9subtypes；characterizedbyternperatezoneelementsbut、加nlsometropicnaturelackingendemicelementThetemperateelementsinclude208genera578％of

6、thetotalgenerafromthefloraofEastTianmuMt，256％higherthanthetropicdementThenorthtemperateelementsinclude95genera457％ofthetemperateelementand264％ofthetotalgenerafromthefloraofEastTianmuMtManyspcci餾ofthesegeneraareimportants

7、peciesfortheforestofEastTianmuMoutainsTruetropicelmentisnotexistinthisareaexceptsomespeciesextendedtosubtropicandtemperateareaIthascloserelationship謝也thefloraofeastChina“fcformsarcmainlygrassThevegetationsofEastTianmuMou

8、tainswereseverelydestroyedseveraltimessince1950to1970，andhavebegunto職刪eLButcomparedtoWestTianmuMoutains’，thedevelopmentalstateofEastTianmuvegetationisverypoorThemaintypesofthevegetationinEastTianmuMtareshrubthickets，shru

9、bgrasslands，evergreenanddeciduousbroadleavedmixedforests，deciduousbroadleavedforests，mountainmeadowsandplantationsExoticplantsofEastTianmuMtarenotinhiglIproportionbuthavegreatinfluenceonplantcommunitytothefloraKeywords：E