| 要旨トップ | 目次 | 日本生態学会第59回全国大会 (2012年3月,大津) 講演要旨
ESJ59/EAFES5 Abstract


一般講演(ポスター発表) P2-375A (Poster presentation)

Does stem respiration vary with stem height? -measurements up to 40m stem height in a Bornean tropical rainforest-

*Katayama, A. (Kyushu Univ.), Kume, T. (Taiwan Univ.), Ohashi, M. (Univ. Hyogo), Matsumoto, K. (Univ. Ryukyu), Kumagai, T. (NagoyaUniv.), Otsuki, K. (Kyushu Univ.)

Though vertical variation in woody tissue respiration (Rwood) was reported in several studies, Rwood at only breast height was often used in estimates for whole-tree woody tissue respiration (Rwhole). Measurements at only breast height may cause serious errors in the estimates, especially for emergent trees in tropical rainforests, which are often taller than 50m. In order to clarify appropriate measurements design for Rwhole estimates for emergent trees, we examined vertical variations in Rwood for emergent trees in a Bornean tropical rainforest. We measured Rwood for seven trees which consisted of two major species using ladders and 90m crane facility. Rwood were measured at four to seven heights of each trees, up to 40m stem height. We did not find any specific trends in vertical variation in Rwood for the seven trees. Furthermore, Rwhole estimated from measurements at several stem heights and Rwhole estimated from measurements at only breast height (Rwhole’) had clear linear relationship (Rwhole = 0.98 ×Rwhole’, R2=0.92). These results suggest that Rwood at only breast height can be used for reasonable Rwhole estimates for emergent trees.


日本生態学会