| 红枫湖水库消落带植物物种组成及群落物种多样性研究 |
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| 作者单位： | ;1.贵州师范大学生命科学学院;2.贵州师范大学贵州省山地环境信息系统与生态环境保护重点实验室 |
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| 摘 要： | 通过对红枫湖土质缓坡消落带、岩质岸坡消落带和河口型消落带植物群落进行调查,分析其草本植物群落物种组成、结构特征以及群落多样性.结果表明:共统计105种草本植物,隶属42科92属,菊科和禾本科居多,物种数随着海拔的增大呈现先增大后减少的趋势;土质缓坡消落带、岩质岸坡消落带群落物种多样性指数随高程变化呈一定的时空异质性,河口型消落带群落物种多样性指数沿入湖口至河流上段差异性不显著.消落带植物物种组成和群落多样性的变化来自于高程梯度造成的水淹强度及不同消落带微生境的差异,可见,消落带植物群落分布受海拔、地形的共同影响.
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| 关 键 词： | 红枫湖消落带 高程 群落结构 物种多样性 生态修复 |
Species Composition and Species Diversity of Plant Community in the Water-lever Fluctuation Zone of Hongfeng Reservior |
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| Institution: | ,College of Life Sciences,Guizhou Normal University,Guizhou Key Laboratory for Mountainous Environmental Information and Ecological Protection,Guizhou Normal University |
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| Abstract: | In order to understand the floristic composition,community struction and diversity,based on investigating the plant community distribution of soil gentle slope,rock slope,estuary-type hydro-fluctuation belt.The results showed that there were 105 species of herbaceous plants belonging to 42 families and 92 genera in all plots.The dominant families were Gramineae and Compositae.The number of species increased first and deceased finally with the increasing of altitude.The species diversity index of soil gentle slope hydro-fluctuation belt and rock slope hydro-fluctuation belt showed a certain spatial and temporal heterogeneity with the elevation change,and the species diversity index of the estuary-type hydro-fluctuation belt from lake inlet to upper reaches had no significant difference.Obviously,the distribution of plant communities in the riparian zone is affected by the elevation and topography. |
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| Keywords: | hydro-fluctuation belt of Hongfeng Reservior elevation community structure species diversity ecological restoration |
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