Community dynamics of artificial vegetation on rocky slope in the first year after planting

In order to understand the dynamic changes of artificial vegetation community of rocky slope in the initial planting stage, based on the actual project and taking conventional community survey method, the artificial vegetation of highway rocky slope have been tracked and investigated for one year. The results showed that during the observation period, 47 species of plants in 46 genus and 13 families had been found in the plots; most of them were herbs belonged to three families: Gramineae, Leguminosae and Compositae. Community species quantitative composition showed seasonal changes and 21 species was recorded (maximum) in September 2009, while 5 species was recorded (minimum) in February 2010. The results of plant distribution in different functional groups showed that legumes had performed better adaptability. The results of distribution of plant life forms showed that perennial plants grew relatively stable. The Lolium perenne always occupied an obvious advantage in the first year after planting and the community type was the L. perenne community. The distributions of community species were uniform and there was no stratification phenomenon. Community richness index, ShannonWiener index and Simpson index showed seasonal fluctuations, while the change of Pielou evenness index was not notable. The important value of L.perenne and community species richness index, ShannonWiener index, Simpson index, Pielou evenness index had a significant negative correlation.