LEAF ENERGY BALANCE AND TRANSPIRATIONAL RELATIONSHIPS OF TULIP POPLAR (LIRIODENDRON TULIPIFERA)

摘要

Objectives were to (1) measure and compare stomatal relationships with environmental and plant morphological variables, (2) determine and assess the relative importance of factors affecting transpiration and leaf energy balance of a mature tulip poplar, (3) examine and describe the diurnal kinetics of transpiration and leaf energy balance under forest conditions, and (4) examine and develop equations describing these processes and relationships.nTulip poplar leaves were examined at three crown heights. Stomatal distribution, density, and dimensions were measured, then these data were used to predict leaf diffusion layer resistance. Stomatal dimensions decreased with crown height while stomatal density increased, but neither varied over individual leaf surfaces. Numbers of stomata per leaf were con¬stant throughout the crown.