Estimation of vertical profiles of leaf drying times after daytime rainfall within a Bornean tropical rainforest

Tomonori Kume, Odair J. Manfroi, Masakazu Suzuki, Katsunori Tanaka, Koichiro Kuraji, Michiko Nakagawa, Hikaru Komatsu, Tomo'omi Kumagai

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

South-east Asian Bornean tropical rainforests have large and complex canopy structures. To clarify how forest structure affects wet-canopy evaporation, it is necessary to consider wet-canopy evaporation processes within the forest canopy, such as vertical profiles of canopy drying time. In a previous study a method was proposed that utilizes sap flow measurements to estimate canopy drying time after rainfall (CDTobs) during daytime. In this present study, the method was applied to estimations of the vertical variations in CDTobs in 11 individual trees of various heights, ranging from 2.7 m to 53 m. The study derived vertical profiles and showed that the lengths of CDTobs in lower canopy trees were 2-4 h longer than those in the upper canopy trees. The new method for CDTobs profiles presented in this study, which is available for validation of multi-layer biosphere-atmospheric models, is a useful illustration for clarifying wet-canopy' evaporation processes in tropical rainforests.

Original languageEnglish
Pages (from-to)3689-3696
Number of pages8
JournalHydrological Processes
Volume22
Issue number18
DOIs
Publication statusPublished - Aug 30 2008

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

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    Kume, T., Manfroi, O. J., Suzuki, M., Tanaka, K., Kuraji, K., Nakagawa, M., Komatsu, H., & Kumagai, T. (2008). Estimation of vertical profiles of leaf drying times after daytime rainfall within a Bornean tropical rainforest. Hydrological Processes, 22(18), 3689-3696. https://doi.org/10.1002/hyp.6972