Investigation on Plant Community Diversity in Nanjian Fenghuangshan Nature Reserve
The plant communities in Nanjian Fenghuangshan Nature Reserve were investigated by using the method of sample line and sample square.The results showed that there were 6 vegetation types,7 vegetation subtypes,10 formations and 18 associations in the reserve,and the vegetation types were di-verse;except for the lowest species richness(S)in arbor layer and shrub layer of Alnus nepalensis and Eupatorium adenophorum community,the S value of shrub layer in the same community was significantly higher than that of arbor layer.Sorenson similarity analysis showed that the similarity between the two communities was higher in the shrub layer than in the tree layer.Shannon-Wiener index(H),Pielou in-dex(J)and Simpson index(D)showed that semi-humid evergreen broad-leaved forest and warm tem-perate coniferous forest forest had the highest diversity,while warm deciduous broad-leaved forest had the lowest diversity,and the D index of shrub layer in the same community was obviously higher than that of arbor forest.The correlation between D、H、J indexes and species richness was not high in arbor lay-er and shrub layer;D index and H index,D index and J index of arbor layer showed significant positive correlation;D index and H index,D index and J index,H index and J index of shrub layer showed sig-nificant positive correlation.According to the characteristics of vegetation types and plant community di-versity in the reserve,the protection suggestions such as strengthening the protection of native vegetation,prevention and control of alien invasive species,and ecological restoration were put forward.
community diversityvegetation typevegetation distributionNanjian Fenghuangshan Nature Reserve
NETL
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万方数据
