广东南雄丹霞梧桐自然保护区植物多样性评价

A study on plant diversity evaluation in Danxia Wutong Nature Reserve in Nanxiong City

采用样方、样线相结合的方法,对广东省南雄丹霞梧桐自然保护区进行了实地调查,调查统计了南雄丹霞梧桐自然保护区的植物组成、优势科属,选取多样性、稀有性、代表性和威胁性4项指标,构建植物多样性评价体系进行了评价。结果表明:(1)维管束植物175科584属1025种。其中蕨类植物31科56属97种,种子植物144科528属928种,其中裸子植物为6科7属7种,被子植物138科521属921种;(2)广东省南雄丹霞梧桐自然保护区生态系统类型多样化且稳定性高,植物资源丰富;植物区系以亚热带成分占优(3)被子植物是南雄丹霞梧桐自然保护区植物的重要组成部分,优势类群主要为菊科、禾本科、蝶形花科、蔷薇科、莎草科、茜草科;(4)植物多样性指数得分为6.71,植物多样性处于较好水平。

A field survey was carried out at the Danxia Wutong Nature Reserve in Nanxiong,Guangdong Province,investigated by the method of sample square and sample line.The plant composition,dominant Branch and genus of the Nanxiong Danxia Wutong Nature Reserve were Investigated and counted.Plant diversity assessment system was established by selecting four indicators of diversity,rarity,representativeness and threat.The results showed that the ecosystem of Danxia Wutong Nature Reserve in Nanxiong,Guangdong Province was diversified and stable,and the plant resources were abundant.There were 1025 species of vascular plants belonging to 584 genera and 175 families.Among them,there were 97 species of pteridophyte,56 genera,31 families,928 species of seed plant,528 genera,114 families,7 species of gymnosperms,7 families,6 genera,921 species of angiosperms,138 families,521 genera.Angiosperms were an important part of the plants of the Nanxiong Danxia Wutong Nature Reserve.Flora was dominated by subtropical components.The dominant group was mainly Compositae,Poaceae,Butterfly,Rosaceae,Cyperaceae and Rubiaceae;the plant diversity index score was 6.71,and the plant diversity was at a good level.