Investigation and Analysis on Plant Diversity of Waterfront Greenbelt in Nanning

Based upon the Margalef index,the Shannon-Wiener index and the Pielou index of 9 waterfront greenbelt in Nanning,the plant community species abundance,the multiplicity and the uniformity were analyzed.The results showed that there are 176 kinds of plants in 130 type places including 46 kinds of arbor,60 kinds of shrub,70 kinds of herbaceous,Margalef index and Shannon-Wiener index appeared as shrub layerherb layerarbor layer.However the Pielou index,different from the previous two,appeared as shrub layerarbor layerherb layer.By comparing different type waterfront greenbelt,each index's performance is different.The maximum Margalef index of arbor layer(6.488),shrub layer(13.510) and herb layer(8.630)were appeared in Nanhu Park,the maximum Shannon-Wiener index of arbor layer(2.886) and herb layer(3.873) were appeared in Nanhu Park,the maximum Shannon-Wiener index of shrub layer(2.236) was appeared in Shishan Park;the maximum Pielou index of arbor layer(0.906) and herb layer(0.970) were appeared in Minsheng Square,the maximum Pielou index of shrub layer(0.847) was appeared in Shishan Park.With higher Margalef index and Shannon-Wiener index,the plant communities is high species richness,more complex community structure,well ecological functions.With lower Pielou index,landscaping practices of communities of plants is varied and landscape heterogeneity is high.