Specific leaf area(SLA),SPAD value and seed mass are important plant function traits,reflecting light use capacity and seed dispersal pattern.In order to understand the differences of SLA,SPAD value and seed mass among main subtropical tree species,leaves of Quercus fabri,Litsea coreana,Liquidambar formosana,Choerospondias xillaries,Cyclobalanopsis glauca,Lithocarpus glabra,Pinus massoniana,Cunninghamia lanceolata,Ilex purpurea,Eurya muricata,Oropetalum chinensis and Symplocos caudata were sampled at top,middle and bottom of canopy position t...