缙云山风灾迹地生态恢复过程中的群落动态研究
Studying on the Community Dynamics of Ecological Restoration of the Wind-Damage Slash in Jinyun Mountain
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摘要: 对缙云山风灾迹地森林群落在11年恢复 过程中的幼苗动态、群落结构、植物物种组成以及物种多样性的变化等方面进行了研究.结 果表明：(1)在恢复的前2年，马尾松、大头茶的幼苗占绝对优势，其次是川灰 木、小叶栲的幼苗，其他树种的幼苗较少；恢复后的第8年，川灰木、小叶栲和其他树种的 幼苗增加，马尾松和大头茶的幼苗减少；恢复后的第11年，川灰木、小叶栲和其他常绿阔叶 树种的幼苗占优势，林下无马尾松幼苗，大头茶的幼苗也较少.(2)群落的垂直结 构日益明显，群落的水平结构指标盖度、密度和胸面积都有大幅度增加.(3)群 落乔木层的物种多样性、均匀度增加，生态优势度降低，群落向着复杂化、多样化的常绿阔 叶林方向发展.Abstract: The seeding dynamic, community structure, species diver s ities of the wind-damaged slash after restoration 11 years were studied. The res ults were as the following: (1) Pinus massoniana and Gordonia acuminata seeding were dominated at the first and second years. After restoration 8 years Casta nopsiscarlessiivar.spinulosia,Symplocos satchuenesis and others evergreen broadleaf trees seeding increased. Pinus massoniana and Gordonia acuminata seeding decreased. After 11 years, Castanopsis carlessiivar.spinulosia, Symplocos satchuenesis and others evergreen broadleaf trees seeding were dominated.There was no Pinus massoniana seeding, and Gordonia acuminata seeding was very little .(2)Thevertical structure of community tended to be complex, while the horizontal one increased by a wide range.(3)The species diversity and evenness of trees la yer increased, but the ecological dominance decreased. The community become more complicated of evergreen broadleaf forest.
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Key words:
- ecological restoration /
- species diversity /
- evenness /
- eco logical dominance /
- Jinyun mountain .
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