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时间:2020-06-19
《中亚热带石栎-青冈群落物种组成、结构及区系特征.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第49卷第12期林业科学Vo1.49.No.122013年12月SCIENTIASILVAESINICAEDec.,2013doi:10.11707/j.1001—7488.20131202中亚热带石栎一青冈群落物种组成、结构及区系特征赵丽娟项文化李家湘邓湘雯刘聪(1.中南林业科技大学生命科学-q技术学院长沙410004;2.中南林业科技大学林学院长沙410004)摘要:利用1hm。固定样地数据,分析湖南省长沙县大山冲国有林场石栎一青冈群落的种类组成、群落结构及区系特征。结果表明:群落中胸径≥1cm的植物共38科55属73种,常绿种(
2、50.68%)和落叶种(49.32%)所占的比例相当,没有大型木质藤本;壳斗科重要值最大,达35.94,是群落的优势建群科;植物种数、个体数量、胸径级和高度级呈倒“J,’型分布,表明群落垂直结构的层次分化明显,结构稳定,更新良好;该群落具有典型亚热带区系性质,与日本森林植物群落具有极大的相似性,属于东部典型常绿阔叶林的石栎一青冈群系组,起源应不迟于第三纪。关键词:常绿阔叶林;地理成分;群落结构;中国一日本森林植物区;群落起源中图分类号:s718.54文献标识码:A文章编号: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
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