Plant floristic diversity in the Baishilazi National Nature Reserve of Liaoning, China

The article objective to study diversity of plant floristic, based on floristic spectra, diversity indexes, correlation analysis, and cluster analysis, plant floristic diversity in the Baishilazi National Nature Reserve(NNR) of Liaoning Province was analyzed and compared to adjacent mountains. Results showed an abundance of species in Baishilazi including angiosperms and dicotyledonous plants. It is obvious in the dominant family and genus, angiosperms having a single-species and species with only a few genera were plentiful were showing some relict phenomenon. Distribution types were diverse and complex in the Baishilazi NNR, endemic genera and species were lacking, and tropical elements were few with a greater proportions of taxa belonging to species with temperate characteristics. Compared with adjacent mountains, the Shannon-Wiener index of the floristics was significantly different, whereas the Simpson index was not. The Shannon-Wiener Indexes of Taishan and Kunyushan were high. Correlation of species diversity for different mountains was highly significant(P=0.01) with r between 0.839 and 0.995. The cluster analysis of similarities and latitude patterns for flora of Northeast China, indicated that flora of Liaodong Peninsula in Liaoning Province belonged to the flora of North China.