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1、文章編號:湖南省南岳原生性森林群落的研究-Ⅲ長葉石櫟林(1湖南環(huán)境生物學(xué)院,湖南衡陽421005)(2南岳樹木園,湖南衡陽421100)摘要湖南省南岳原生性森林群落長葉石櫟林是一種尚未報道過的群落新類型,即長葉石櫟+多脈青岡-尾葉山茶-求米草群叢(AssociationofLithocarpushenryi+Cyclobalanopsismultinervis-Camelliacaudata-Oplismenusundulatifolius),屬于典型的常綠落葉闊葉林。該群落屬的區(qū)系成分主要是北溫帶和泛熱帶2種分布區(qū)類型,其中溫帶性質(zhì)成分占
2、主體;而種的區(qū)系成分主要是華夏、東亞、華東-華中3種分布式樣,具有華東－華中區(qū)系的過渡交替色彩。群落可以明顯分為喬木層、灌木層和草本層,其中喬木層又可分為2個亞層,該群落能穩(wěn)定相當(dāng)一段時間，更新演替過程中雖然會保持常綠落葉闊葉林性質(zhì),但其優(yōu)勢種可能被尾葉山茶、多脈青岡等樹種取代。該群落物種多樣性水平接近季雨林與稀樹草原之間的水平;Shannon-Weaver、Brillouin和McIntosh等3個多樣性指數(shù)及其對應(yīng)的均勻度指數(shù)可能適合研究群落物種多樣性;在研究群落物種多樣性時必須要多用一些公式進(jìn)行測定才可能避免出現(xiàn)錯誤的結(jié)果。不同的物種
3、相對多度分布格局模型在擬合群落不同層次時其結(jié)果并不一致。關(guān)鍵詞長葉石櫟林;原生性森林群落;新類型;區(qū)系特點;層次結(jié)構(gòu);更新演替;物種多樣性;物種相對多度分布格局;南岳中圖分類號:Q948.15文獻(xiàn)標(biāo)識碼:ASTUDYONORIGINALFORESTCOMMUNITYINNANYUEOFHUNANPROVINCE-Ⅲ.LITHOCARPUSHENRYIFORESTZuoJiafu1,ZhuXun1,TianWeizheng1,PengDaiwen1,LiMinghong2(1HunanEnvironment-BiologicalPolytec
4、hnic,Hengyang421005Hunan)(2NanyueArboretum,Hengyang421100Hunan)Abstract：AccordingtotheinvestigationandresearchoftheLithocarpushenryiforestinNanyue,Hunanprovince,thiscommunityisanewtypethatithasn’tbeenreported,itcanbecalledAssociationofLithocarpushenryi+Cyclobalanopsismulti
5、nervis-Camellia10caudata-Oplismenusundulatifoliusanditisbelongedtotheevergreeanddeciduousbroad-leavedmixedforest.Thereare73species,64generaand44familiestobelongtothevascularplantinthecommunity.Thetemperateelementsofthefloristicgenerainthecommunityoccupies53.45%ofthetotal,b
6、utthetropicalone46.55%.ThefloristicelementsofspeciesinthecommunityaremainlyCathaysian,EastAsiaandEastChina-CentralChinawhichoccupy25.35%,22.53%and12.68%ofthetotalrespectively.IthasveryobviousthatitcrossbetweenthefloisticelementsofEastChinaandCentralChinaofthespeciesoftheco
7、mmunity.Thewoodplantsinthecommunityoccupy80.39%ofthetotal,buttheherb19.61%.Thecommunitycanbedividedthearborlayerthatitcanbedivided2sublayer,shrublayerandherblayer.Itstillkeeptheevergreenanddeciduousbroad-leavedmixedforest,butitsdominantspeciesi.e.Lithocarpushenryiwillproba
8、blyreplacedbyCamelliacaudataorCyclobalanopsismultivervisandsoon.Theresultsshowthattheplan
