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1、第49卷第12期林業(yè)科學(xué)Vo1.49.No.122013年12月SCIENTIASILVAESINICAEDec.,2013doi:10.11707/j.1001—7488.20131202中亞熱帶石櫟一青岡群落物種組成、結(jié)構(gòu)及區(qū)系特征趙麗娟項(xiàng)文化李家湘鄧湘雯劉聰(1.中南林業(yè)科技大學(xué)生命科學(xué)-q技術(shù)學(xué)院長(zhǎng)沙410004;2.中南林業(yè)科技大學(xué)林學(xué)院長(zhǎng)沙410004)摘要:利用1hm。固定樣地?cái)?shù)據(jù),分析湖南省長(zhǎng)沙縣大山?jīng)_國(guó)有林場(chǎng)石櫟一青岡群落的種類組成、群落結(jié)構(gòu)及區(qū)系特征。結(jié)果表明:群落中胸徑≥1cm的植物共38科55屬73種,常綠種(
2、50.68%)和落葉種(49.32%)所占的比例相當(dāng),沒(méi)有大型木質(zhì)藤本;殼斗科重要值最大,達(dá)35.94,是群落的優(yōu)勢(shì)建群科;植物種數(shù)、個(gè)體數(shù)量、胸徑級(jí)和高度級(jí)呈倒“J,’型分布,表明群落垂直結(jié)構(gòu)的層次分化明顯,結(jié)構(gòu)穩(wěn)定,更新良好;該群落具有典型亞熱帶區(qū)系性質(zhì),與日本森林植物群落具有極大的相似性,屬于東部典型常綠闊葉林的石櫟一青岡群系組,起源應(yīng)不遲于第三紀(jì)。關(guān)鍵詞:常綠闊葉林;地理成分;群落結(jié)構(gòu);中國(guó)一日本森林植物區(qū);群落起源中圖分類號(hào):s718.54文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1001—7488(2013)12—0010—08Floris
3、ticComposition,StructureandPhytOgeographicCharacteristicsinaLithocarpusglaber—CyclobalanopsisglaucaForestCommunityintheSubtropicalRegionZhaoLijuanXiangWenhuaLiJiaxiangDengXiangwenLiuCong(1.CollegeofLifeScienceandTechnology,CentralSouthUniversityofForestryandTechnologyCh
4、angsha410004;2.CollegeofForestry,CentralSouthUniversityofForestryandTechnologyChangsha410004)Abstract:Inthisstudy,floristiecomposition,communitystructure,andphytoge0graphiccharacteristicsinaLithocarpusglaber—Cyclobalanopsisglaucaforestcommunitywereinvestigatedina1hmperm
5、anentplot(100m×100m)locatedinDashanchongstate—ownedforestfarm(113。1746”一113。198”E,28。2358”一28。2458”N),ChangshaCounty,HunanProvince.Theresultsshowedthatplantswithdiameteratbreastheight(DBH)largerthan1cmintheplotbelongedto73woodyspecies,55genera,and38families.Evergreenbro
6、adleavedanddeciduoustreespeciessharedasimilarproportionofcomposition(i.e.evergreenbroadleaved50.68%anddeciduous49.32%),butnolargewoodyvinesweref0undintheforestcommunity.Fagaceaehadthehighestimportantvalue(35.94)andwasthemostdominantfamilyinthecommunity.Thedistributionof
7、plantindividuals,species,DBHclasses,andheightclassesalldisplayedareverse“J”pattern,indicatingtheapparentverticalcanopystratificationandgoodunderstoryregenerationintheforestcommunity.Theflorahadthetypicalcharacteristicsofsubtropicalflorawithextremesimilaritywiththeforest
8、communityinJapanandbelongedtoL.glaber—C.glaucaformationgroupoftypicalevergreenbroadleavedforestintheeasternreg