Leaf Traits and Environmental Adaptability of 4 Lianas in Tropical Garden

To assess the leaf traits of different lianas response to environment, 4 common tropical landscape lianas, Clerodendrum speciosum, Hetcropterys angustifolia, Mansoa Alliacea and Pyrostegia venusta were chosen to investigate the 10 leaf traits and analyze their relationships between leaf trait and environment. The methods of ANOVA, principal component analysis and fuzzy membership function were used to evaluate the environmental adaptability of 4 lianas. The results show that the values of specific leaf volume chlorophyll a content, chlorophyll b content, and chlorophyll content in Clerodendrum speciosum are significantly higher than other species. According to the leaf economic spectrum, the species at the quick investment-return end is Clerodendrum speciosum while other three species are at the slow investment-return end. The rank of environmental adaptability of 4 lianas from high to low as Clerodendrum speciosum, Pyrostegia venusta, Mansoa alliacea and Hetcropterys angustifolia.