半天然杉闊混交林群落生態(tài)學(xué)特性研究.pdf

1、福建農(nóng)林大學(xué)碩士學(xué)位論文半天然杉闊混交林群落生態(tài)學(xué)特性研究姓名：陳新芳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：森林培育指導(dǎo)教師：陳存及2001.6.1陳新芳半天然杉闊混交林群落生態(tài)學(xué)特性研究ABSTRACTSThispaperdealswithatfirstbrieflythehistoryofthewayofnaturalartificialregeneration，throughwhichseminaturalmixedforestofCunnin

2、ghamialanceolataandbroadleaftreesform：communityecologyofseminaturalmixedforestofCunninghamialanceolataandbroadleaftrees，includingquantitativecharacteristics，andspatialdistributionpanem，niche，interspecificcompetition，grow

3、thdynamicsofdominanceofmaintreespeciesandbiomassandproductivity，andsomeresultsobtainedfromthisexperiment，wlfichselectedfromtwoexperimentalstands25hm2inarea；7standardplots，5600m‘inarea，locatedinJinkengandTaijtang，Chendato

4、wn，Sanmingcity，F(xiàn)ujianprovinceLQuantativecharacteristics：throughfloristiccomposition，communitystructureandspeciesdiversityindices，thequantitativecharacteristicsofeachcommunitytypeinseminaturalmixedforestofCunninghamialanc

5、eolatamadbroadleaftreeshasbeenstudied，andtheresultsshowthatthereatre57treespeciesof41genusbelongingto29families，thetreespeciescompositioniscomplicated，andthereisacloserelationshipbetweenthequantitivecharacteristicsandcom

6、munitystructureanditshabitat，andthespeciesdiversityofarborlayerandshrublayerandforestcommunityishigh，therefore，thismanagementalpattembenefittheconservationofbiodiversitywhichdeserveswidespreading2Spatialdistribution：pres

7、entsthespatialdistributionpatternof5maintreespeciesinseminaturalmixedforestol’Cunninghamialanceolataandbroadleaftreesusingaggregateindices，andthemethodof1wao’s(mx)regression，andtheresultsshowthatthespatialdistributionof4

8、treeisclumptype，exceptforSymplocoscOudacethatisineventype3Niche：thenichecharacteristicsof4mainfleepopulations，analyzedbyquantativemethod；thenichebreath，nicheproportionalsimilariryandnicheoverlapofmaintreepopulations，meas

9、ureedbytakingcommunitycompositiontypes(includingCunninghamialanceolataAlniphyllumfortuneiCastanopsiscarlesiiother8treespecies；CunninghamialanceolataAlniphyllumfortuneiCastanopsiscarlesiiCastnopsisAssaother2treespecies；Cu

10、nninghamialanceolataCastnopsisnssQCastanopsiscarlesiiother2treespecies；CastanopsiscarlesiiCunninghamialanceolataother10treesspecies)anddistributiontypesindifferentelevation(200300re)treatedasonedimensionresourcestatewith

11、investigated4plots；andtheecologicalsignificanceofresultswereanalyzedTheresult，conformingtothelawofnature，willprovidetheoreticalbasisforfurtherstudyingonthestabilitysuccessionandspatialpatternofsemiculturalmixedforestofCl

12、anceolataandbroadleaftrees，andscientific，reasonableguidanceforitsmanagementanddevelopment4Competition：thecompetitionbetweentwomainspecies(CunninghamialanceolataandCastanopsiscarlesii)insemiculturalmixedforestofCunningham

13、ialanceolataandbroadleaftrees，inwhichpercentagesofimportancevalueofCunninghamialanceolataandCastanopsiscarlesiiareregardedasthemeasureofthecompetitivecoefficience，andthedominantdegreeofnormalstandsareregardedastheirenvir