Leaf Functional Traits of Ferns from Different Habitats in Monsoon Evergreen Broad-leaved Forest in Dinghushan Mountain Comparison on the competitiveness of the invaded pokeweed with its accompanying species in the coastal protection forest of Shandong Peninsula Leaf functional traits of Davidia involucrate at Houhe Nature Reserve in Hubei Leaf Calorific Value of 8 Tree Species in the Coastal Areas of Jiaodong and Cost of Construction of Leaf Biomass and Its Adaptability Comparison of leaf construction cost in dominant tree species of the evergreen broad-leaved forest in Jiulian Mountain, Jiangxi Province Variability and association of leaf traits between current-year and former-year leaves in evergreen trees in Tiantong, Zhejiang, China The effects of leaf phenology, construction cost and payback time on carbon accumulation in invasive plants