重庆大木山木本植物区系及植物资源特点  

Woody Flora and Plant Resources of the Damushan Nature Reserve in Chongqing,China

作　　者：周先容[1,2] 何兴金[2] 周颂东[2] 张薇[1] 尚进[1] 

机构地区：[1]长江师范学院,重庆408100 [2]四川大学生命科学学院,成都610064

出　　处：《应用与环境生物学报》2011年第5期624-631,共8页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金项目(No.31070166);教育部博士点基金项目(No.20090181110064);重庆市教委基金项目(No.KJ091314)资助~~

摘　　要：基于野外调查资料,对位于三峡库区腹心地带的大木山的木本植物区系及资源特点进行研究,以期为该地区生物多样性保护和可持续利用提供依据.野外调查共发现木本植物738种,隶属于86科、288属.其中裸子植物6科、10属、15种,双子叶植物77科、271属、699种,单子叶植物3科、7属、24种.乔木268种,灌木398种,木质藤本72种.科的组成优势现象十分明显,含10种以上的科有26个,包含164属、526种植物,分别占该区木本植物总属数和总种数的56.94%和71.27%,是该区木本植物区系构成的主导成分.木本植物区系成分复杂,属的分布类型有14个,种的分布类型有12个,区系具有明显的过渡性特征.有483个中国特有种分布于该地区,占总种数的65.71%,其中27.12%的物种为华中植物区特有种.13个地区的聚类分析表明大木山与华中植物区和华东植物区关系最为密切.木本植物资源以药用、材用、观赏、食用类为主,古老孑遗植物和珍稀濒危植物丰富.Damushan Nature Reserve is located in the southeast of Fuling District,Chongqing,China,where is also a part of Three Gorges Reservoir Region.The area is gifted with diverse and unique flora.The field survey results were summarized to provide information for biodiversity conservation and sustainable utilization of the plant resources.A total of 738 woody plant species,belonging to 288 genera and 86 families were collected and identified.The species included 268 species of trees,398 species of shrubs and 72 species of lianas.Statistics showed that 6 families,10 genera and 15 species were Gymnosperm;77 families,271 genera and 699 species belonged to Dicotyledon;and 3 families,7 genera and 24 species were Monocotyledon.The dominant families were very obvious,26 families consisting of more than 10 species contained totally 164 genera and 526 species,which made up 56.94% and 71.27% of the total number of woody genera and species,and formed the majority of the flora in this area.The flora compositions were complicated and contained various geographical types： 14 areal-types of genera,and 12 areal-types of species of woody plants.The flora had obviously transitional characteristics from tropical to temperate zones.There were 483 species endemic to China,accounting for 65.71% of the total woody plants in the Damushan Nature Reserve.27.12% of those species in this region were endemic to the floristic region of Central China.Comparative analysis between Damushan Nature Reserve and the other twelve regions indicated that the flora was similar to those of Mt.Baiyun,Mt.Jinggang,Mt.Jinyun,Ruoliaoxian etc.,and most closely allied to floristic region of Central China and East China.In this region,woody plant resources can be divided into four main categories,i.e,medicinal,timber,ornamental and edible plants,as well as abundant ancient,relict,rare and endangered plants.Fig l,Tab 5,Ref 35

关 键 词：木本植物 植物区系 植物资源 聚类分析 大木山 三峡库区 

分 类 号：Q948.1[生物学—植物学]