The Main Plant Population and Community Characteristics of the Confucian Cemetery in Qufu,Shandong Province,China
Based on the data obtained from the survey of 40 samples,we clarified the tree diameter class distribution and types of species,analyzed the species diversity of the plant community in the Confucian Cemetery and evaluated the restoration and succession of plant community.The results are as follows:Firstly,in the tree and shrub layers,the Shannon-Wiener diversity index,Simpson diversity index and Pielou evenness index of the Pistacia chinensis forest are obviously higher than those of the Platycladus orientailis forest(P <0.05),but nearly the same as those of the Quercus acutissima forest.In the herb layer,there is no obvious difference among the four indexes(Richness index,Shannon-Wiener diversity in-dex,Simpson diversity index Pielou evenness index).Secondly,there are 7 expansive species,16 seclusive species,2 enhancing invasive species and 3 randomly invasive species.The platycladus orientalis popula-tion is obviously lacking in Grade Ⅰseedlings and Grade Ⅱ saplings.The Quercus acutissima population is extremely short of Grade Ⅱ saplings.Thirdly,the main cause of the vegetation status in the Confucian Cemetery is the grass cutting test,while the landscape fragmentation,area effect and non-environmental heterogeneity are also important reasons.