Abstract:Vertical stratification is the basic structure of the forest community, but plant hydraulic strategies related to community vertical layers are poorly understood. We tested the association between plant height and hydraulic architecture by measuring twig diameter, sapwood area, wood density, vessel diameter, vessel lumen area, and twig specific conductivity on 25 individuals of 9 species, in a Schima superba community in Tiantong, Zhejiang Province. The results showed that twig diameter, vessel diameter, vessel lumen area, twig lumen area, sapwood area, and twig specific conductivity increased significantly with plant height. As a key hydraulic trait, twig specific conductivity positively associated with vessel diameter and lumen area, twig diameter and lumen area, and sapwood area. The results highlight the remarkable differences of plant hydraulic architectures and the process of the hydraulic niche partition for plants between vertical layers in the local forest communities.