高度并未损害最高的热带龙脑香树的水力系统，这一成果由英国埃克塞特大学
该团队评估了世界上最高的热带树种——东南亚龙脑香树的水力系统是否受到其高度的负面影响。由树高引起的负木质部压力可以通过调节血管解剖结构和叶片水力性状得到充分补偿，并且树木在严重干旱期间没有受到与高度相关的生长损失。因此，高度不会使世界上最高的热带树种的水力系统更容易受到干旱的影响，这些树木的生长速度也不会比它们较小的同类受到更大的负面影响。
据了解，森林中一半的地上生物量储存在不成比例的少数非常高的树木中。据预测，这些巨树更容易受到干旱造成的损害，因为它们的高度会损害它们的水力系统。
附：英文原文
Title: Height does not impair the hydraulic system of the tallest tropical Dipterocarp trees
Author: Paulo Bittencourt, Arne Scheire, Palasiah Jotan, Jehova LourenoJr., Lindsay F. Banin, Mohd Aminur Faiz bin Suis, David F. R. P. Burslem, Bradley Christoffersen, David Coomes, Peter Groenendijk, Steven Jansen, Tommaso Jucker, Radim Matula, Maurizio Mencuccini, Rafael Oliveira, Roman Plichta, Reuben Nilus, Rolando Robert, Martin Svátek, Lucy Rowland
Issue&Volume: 2026-07-02
Abstract: Half of the aboveground biomass in forests is stored in a disproportionately small number of very tall trees. These giants are predicted to be more vulnerable to drought-induced damage because height impairs their hydraulic system. We evaluated whether the hydraulic system of world’s tallest tropical tree species—Southeast Asian dipterocarps—are negatively affected by their height. The more negative xylem pressures caused by tree height were fully compensated for through adjustment of vessel anatomy and leaf hydraulic traits, and the trees suffered no height-related loss in growth during a severe drought. Therefore, height does not make the hydraulic systems of the world’s tallest tropical tree species more vulnerable to drought, and the growth rates of these trees are not more negatively affected by drought than are their smaller counterparts.
DOI: aea9013
Source: https://www.science.org/doi/10.1126/science.aea9013