Spatial patterns and interspecific associations of dominant tree species in two old-growth karst forests

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1、EcolRes(2010)25:1151–1160DOI10.1007/s11284-010-0740-0ORIGINALARTICLEZhong-HuaZhang•GangHu•Jie-DongZhuDong-HuiLuo•JianNiSpatialpatternsandinterspecificassociationsofdominanttreespeciesintwoold-growthkarstforests,SWChinaReceived:19October2009/Accepted:9June2010/Publishedonline:7July2010ÓTheEcological

2、SocietyofJapan2010AbstractSpatialpatternsandinterspecificassociations(Platycarya–ClausenaandCastanopsis–Rhododendron).ofplantspeciesinforestsareimportantforrevealingResultsalsoindicatedthatthetwomainfactorsofhowspeciesinteractwitheachotherandwiththeenvi-habitatcomplexityandheterogeneity—theelevatio

3、nandronment,andhencehaveimportantimplicationsforrock-barenessrate—playimportantrolesindeterminingoptimalforestmanagementandrestorationindegradedspatialdistributionpatternsandinterspecificassocia-forestecosystems.Inthispaper,theO-ringstatisticstionsoftreespeciesinkarstforestsofMaolan.Thus,thewereuse

4、dtocharacterizethespatialpatternsandobservedspatialpatternsamongtheeighttreespeciesinterspecificassociationsofeightdominanttreespeciesareinfluencedbyhabitatheterogeneityinthecontextofintwo1-haold-growthkarstforestplotsinMaolankarsttopographicalvariations.ThepartitioningofNationalNaturalReserve,south

5、westernChina.Wehabitatnichescontributestothepromotingspeciesfoundthatmostoftheeightdominanttreespeciesincoexistenceinspecies-richkarstforests.Thedifferencestwoforestswerecontinuouslyregeneratingpopulations.ofspeciesfeaturesinspatialpatternsandassociationsSixspecies(Platycaryalongipes,Acerwangchii,C

6、lausenashouldbepaidmoreattentionwhenplanningforestdunniana,Castanopsiscarlesiivar.spinulosa,Distyliummanagementanddevelopingrestorationstrategies.myricoides,andRhododendronlatoucheae)exhibitedsignificantaggregationsatthemajorityofscaleswhileKeywordsHabitatheterogeneityÆInterspecificothers(Celtisbion

7、diiandCyclobalanopsismyrsinaefolia)associationÆKarstforestÆPointpatternanalysisÆshowedarandomdistributionpatternatmostscales.SpatialpatternÆSpeciescoexistenceNegativeassociationwasadominantpatternformostspeciespa