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广东石门台国家级自然保护区藤本植物多样性

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在资源调查的基础上,分析广东石门台国家级自然保护区藤本植物资源的物种组成、区系成分和生活型谱等特征.结果表明:该保护区共有野生藤本植物 262 种,隶属于 50 科 135 属;物种组成以双子叶植物(228 种,87.0%)为主,蕨类(4 种,1.5%)和裸子植物(2 种,0.8%)种类较少;保护区的藤本植物的种属比为 1.94,单位面积种密度为 7.81 种/km2;科主要由寡种科(22 科,44.0%)、单种科(14 科,28.0%)和中等种科(12 科,24.0%)构成,大种科的比例不高(2 科,4.0%);在属的水平上,主要由单种属(84 属,62.2%)、寡种属(48 属,35.6%)和少量的中等种属(3 属,2.2%)组成,缺乏大种属.该保护区藤本植物以热带性质科、属占主导地位,但同时也有一定温带性质区系成分;生活型以木质、常绿、高位芽类型为主;叶以纸质、全缘、单叶为主要特征;大多数藤本植物的攀援方式是缠绕攀援.保护区藤本植物资源丰富,生态习性多样,区系成分复杂,凸显出本区域的气候特征.
Diversity of Lianas Resources in the Shimentai National Nature Reserve,Guangdong
Based on a comprehensive survey of plant resources in the Shimentai Nature Reserve,Guangdong Province,the species composition,floristic composition,and life pattern characteristics of liana plants were analyzed.The results revealed that there were 262 species of wild lianas in the Shimentai Nature Reserve,belonging to 135 genera in 53 families.Specifically,the liana species on the reserve were predominantly Dicotyledonous species(228 species,87.0% ),with fewer pteridophytes(4 species,1.5% )and gymnosperms(2 species,0.8% ).The species-to-genus ratio of lianas in this area was 1.94,and the species density per unit area was 7.81 species·km‒2.Additionally,the families were mainly composed of oligotypic families(22 fami-lies,44.0% ),monotypic families(14 families,28.0% )and middle families(12 families,24.0% ),with a low proportion of large species families(2 families,4.0% ).At the genus level,it was predominantly composed of monotypic genera(84 genera,62.2% ),oligotypic genera(48 genera,35.6% ),with a scarcity of large genera.The liana plants in this nature reserve were dominated by tropical families and genera,with a notable presence of temperate floristic components.Furthermore,the prime life forms of lianas are woody,evergreen,and high bud types,characterized by papery,whole margins,and single leaves and winding climbing methods.In summary,the liana resources in the Shimentai National Nature Reserve are abundant and exhibit diverse ecological habits and complex floral composition,highlighting the climatic characteristics of this region.

lianaspecies compositionbiodiversityShimentai,GuangdongNational Nature Reserve

戴克元、肖金海、曾阳金、李远球、饶兴权、蔡锡安

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广东石门台国家级自然保护区管理局 广东英德 513000

中国科学院华南植物园/中国科学院退化生态系统植被恢复与管理重点实验室 广东 广州 510650

藤本植物 物种组成 生物多样性 广东石门台 国家级自然保护区

国家自然科学基金项目

42177289

2024

热带农业科学
中国热带农业科学院

热带农业科学

CSTPCD
影响因子:0.534
ISSN:1009-2196
年,卷(期):2024.44(8)