Comparison about Plant Community Characters in Different Park Green Space of Tongzhou Distinct in Beijing

Survey of the various styles of 42 botanical communities of the park and garden in Tongzhou district was conducted by representative method of sampling.Its species composition was statistics,on the basis of calculation of various tree species importance values,ecological dominance,species richness index and the diversity index of each park green space were analyzed.The result showed that Daguang Yuan and Wanchun Yuan had a high degree of ecological dominance;ecological parks and canals of urban green space had a high species diversity index and species richness index,evenness index was also higher.It also indicated that the greater the intensity of manual configuration,the less obvious of the dominant species in the communities,the more species-rich and more evenly distributed,and so that more suitable for creating activity space.