Estimation of vertical profiles of leaf drying times after daytime rainfall within a Bornean tropical rainforest
Estimation of vertical profiles of leaf drying times after daytime rainfall within a Bornean tropical rainforest
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DOI：
10.1002/hyp.6972
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发表时间：
2008-08
影响因子：
3.2
通讯作者：
T. Kume;O. Manfroi;Masakazu Suzuki;Katsunori Tanaka;K. Kuraji;M. Nakagawa;H. Komatsu;T. Kumagai
中科院分区：
文献类型：
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作者：
T. Kume;O. Manfroi;Masakazu Suzuki;Katsunori Tanaka;K. Kuraji;M. Nakagawa;H. Komatsu;T. Kumagai
东南亚婆罗洲热带雨林有着巨大而复杂的树冠结构。为了阐明森林结构如何影响湿冠层蒸发，有必要考虑森林冠层内的湿冠层蒸发过程，例如冠层干燥时间的垂直剖面。在以前的研究中，提出了一种方法，利用树干液流测量，以估计冠层干燥时间降雨后（CDTobs）在白天。在本研究中，该方法被应用于估计的垂直变化的CDTobs在11个不同高度的树木，从2.7米到53米。研究得出的垂直剖面，并表明，在较低的冠层树木的CDTobs的长度比那些在较高的冠层树木长2-4小时。本研究提出的新方法可用于多层生物圈大气模式的验证，是澄清热带雨林湿冠层蒸发过程的一个有用的说明。版权所有© 2008约翰威利父子有限公司.
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. Copyright © 2008 John Wiley & Sons, Ltd.