摘要
通过走访调查、实地调查等方式,对湘潭地区濒危植物花榈木的野生种群资源状况、种群结构及分布点群落组成进行调查,为花榈木的保育、可持续开发与利用提供参考依据。结果表明:湘潭地区共有花榈木16个分布点,390株花榈木,其中湘潭县9个分布点、湘乡市6个分布点,韶山市1个分布点。花榈木种群的年龄结构呈现典型金字塔形,各龄级生命期望值都不高,呈现随着龄级的增加,先上升后下降的趋势。存活曲线接近于Deevey-Ⅲ型,种群表现出幼苗期生长不稳定,幼龄树和中龄树稳定,老龄树衰退的特点。种群分布点树种组成丰富,成层明显,优势物种不明显,落叶阔叶成分并存,属常绿落叶阔叶混交林,共有乔木层物种16种,灌木层物种45种,草本层物种5种,物种以青冈、樟树、苦槠、油茶、檵木、淡竹叶等为主。
The wild population resource status,population structure and distribution site community composition of Ormosia henryi in Xiangtan City of Hunan Province were investigated in this study.The results provided a reference for the conservation,sustainable development and utilization of O.henryi.A total of 390 plants of O.henryi were found in 16 sites,including 9 sites in Xiangtan County,6 sites in Xiangxiang City and 1 site in Shaoshan City.The age structure of palmetto population showed a typical pyramid shape,with the low e x values of all age classes,which trend of first increased and then decreased with the increase of age class.The survival curve was closed to Deevey-III.The population showed the characteristics of unstable growth at seedling stage,stable growth of young and middle age trees,and decline of old trees.It was a mixed evergreen deciduous broad-leaved forest with abundant species composition,obvious stratification,no obvious dominant species and coexisting deciduous broad-leaved components.There were 16 species in arbor layer,45 species in shrub layer and 5 species in herb layer,and the main species included Cyclobalanopsis glauca,Cinnamomum camphora,Castanopsis sclerophylla,Camellia oleifera,Lespedeza bicolor and Lophatherum gracile.
作者
周洁尘
朱天才
肖亚琴
吴红强
段翔
李学信
彭皎
方亮
文虹
ZHOU Jiechen;ZHU Tiancai;XIAO Yaqin;WU Hongqiang;DUAN Xiang;LI Xuexin;PENG Jiao;FANG Liang;WEN Hong(Forestry Institute of Xiangtan City,Xiangtan 411206,Hunan,China;Hunan Academy of Forestry,Changsha 410004,Hunan,China)
出处
《湖南林业科技》
2023年第6期51-56,共6页
Hunan Forestry Science & Technology
基金
湖南省林业科技计划项目(XLK201930)
国家珍稀树种花榈木等红豆属种质资源收集及保育(BH2023A001)。
关键词
花榈木
种群分布
野生资源
湘潭市
Ormosia henryi
population distribution
wild resources
Xiangtan City
