Kiyosada Kawai, Naoki Okada. Leaf vascular architecture in temperate dicotyledons: correlations and link to functional traits. Planta. 2020. 251. 1. 1-17
Nakada Ryogo, Okada Naoki, Nakai Takahisa, Kuroda Katsushi, Nagai Satoshi. Water potential gradient between sapwood and heartwood as a driving force in water accumulation in wetwood in conifers. WOOD SCIENCE AND TECHNOLOGY. 2019. 53. 2. 407-424
Sato K, Nakamura R, Kajino H, Kawai K, Nakai W, Saito H, Okada N. Leaf decomposition in a cool-temperate broad-leaved forest established on serpentine soil on Mount Oe, Japan. Ecological Research. 2019. 34. 678-686
Nakamura R, Kajino H, Kawai K, Nakai W, Ohnuki M, Okada N. Diverse recalcitrant substrates slow down decomposition of leaf litter from trees in a serpentine ecosystem. Plant and Soil. 2019. 442. 247-255
Kawai K, Okada N. Coordination of leaf and stem traits in 25 species of Fagaceae from three biomes of East Asia. Botany. 2019. 97. 391-403
Shinta Ohashi, Naoki Okada. Isotopic and wood anatomical approaches to detect annual rings of tropical trees". Symposium on the usage of new techniques to understand the carbon dynamics in the forest ecosystem (Kyoto). 2010
Physiological and phenological features of tropical seasonal forest trees in Thailand in relation to wood formation.
In: The Formation of Wood in Tropical Forest Trees. -A Challenge from the Functional Wood Anatomy- (Nobuchi T. and Mohd. Hamami Sahri eds.) 31-44, UPM Press. 2008