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最优分配理论在地下性状方面是否失效？来自苏格兰松树林干旱解除实验地球物理成像的见解。

Does optimality partitioning theory fail for belowground traits? Insights from geophysical imaging of a drought-release experiment in a Scots Pine forest.

作者信息

Shakas Alexis, Hediger Roman, Gessler Arthur, Singha Kamini, de Pasquale Giulia, D'Odorico Petra, Wagner Florian M, Schaub Marcus, Maurer Hansruedi, Griess Holger, Gisler Jonas, Meusburger Katrin

机构信息

Department of Earth and Planetary Sciences, ETH Zurich, 8092, Zurich, Switzerland.

Swiss Federal Institute for Forest, Snow and Landscape Research WSL, 8903, Birmensdorf, Switzerland.

出版信息

New Phytol. 2025 Jan;245(2):546-558. doi: 10.1111/nph.20245. Epub 2024 Nov 18.

DOI:10.1111/nph.20245
PMID:39558713
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11655441/
Abstract

We investigate the impact of a 20-yr irrigation on root water uptake (RWU) and drought stress release in a naturally dry Scots pine forest. We use a combination of electrical resistivity tomography to image RWU, drone flights to image the crown stress and sensors to monitor soil water content. Our findings suggest that increased water availability enhances root growth and resource use efficiency, potentially increasing trees' resistance to future drought conditions by enabling water uptake from deeper soil layers. This research highlights the significant role of ecological memory and legacy effects in determining tree responses to environmental changes.

摘要

我们研究了20年灌溉对天然干旱的苏格兰松树林根系水分吸收（RWU）和干旱胁迫缓解的影响。我们结合使用电阻层析成像技术来成像根系水分吸收、无人机飞行来成像树冠胁迫以及传感器来监测土壤含水量。我们的研究结果表明，增加水分供应可促进根系生长和资源利用效率，通过使树木能够从更深土层吸收水分，可能增强其对未来干旱条件的抵抗力。这项研究强调了生态记忆和遗留效应在决定树木对环境变化的响应方面的重要作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11655441/46eab458e970/NPH-245-546-g002.jpg
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本文引用的文献

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Finding balance: Tree-ring isotopes differentiate between acclimation and stress-induced imbalance in a long-term irrigation experiment.寻找平衡：树木年轮同位素在长期灌溉实验中区分适应和压力引起的失衡。
Glob Chang Biol. 2024 Mar;30(3):e17237. doi: 10.1111/gcb.17237.
2
Beyond source and sink control - toward an integrated approach to understand the carbon balance in plants.超越源汇控制——走向综合方法理解植物的碳平衡。
New Phytol. 2024 May;242(3):858-869. doi: 10.1111/nph.19611. Epub 2024 Feb 20.
3
The geophysical toolbox applied to forest ecosystems - A review.
应用于森林生态系统的地球物理工具 - 综述。
Sci Total Environ. 2023 Nov 15;899:165503. doi: 10.1016/j.scitotenv.2023.165503. Epub 2023 Jul 16.
4
Why can't we predict traits from the environment?为什么我们不能从环境中预测性状？
New Phytol. 2023 Mar;237(6):1998-2004. doi: 10.1111/nph.18586. Epub 2022 Dec 15.
5
European beech dieback after premature leaf senescence during the 2018 drought in northern Switzerland.2018 年瑞士北部干旱期间提前叶片衰老导致欧洲山毛榉枯萎病。
Plant Biol (Stuttg). 2022 Dec;24(7):1132-1145. doi: 10.1111/plb.13467. Epub 2022 Oct 18.
6
Soil-plant interactions modulated water availability of Swiss forests during the 2015 and 2018 droughts.土壤-植物相互作用调节了瑞士森林在 2015 年和 2018 年干旱期间的水分可用性。
Glob Chang Biol. 2022 Oct;28(20):5928-5944. doi: 10.1111/gcb.16332. Epub 2022 Jul 24.
7
Photosynthetic acclimation and sensitivity to short- and long-term environmental changes in a drought-prone forest.干旱频发森林中光合作用的适应性以及对短期和长期环境变化的敏感性
J Exp Bot. 2022 Apr 18;73(8):2576-2588. doi: 10.1093/jxb/erac033.
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Compound climate events increase tree drought mortality across European forests.复合气候事件增加了欧洲森林中树木因干旱而死亡的数量。
Sci Total Environ. 2022 Apr 10;816:151604. doi: 10.1016/j.scitotenv.2021.151604. Epub 2021 Nov 12.
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Glob Chang Biol. 2021 Jun;27(11):2491-2506. doi: 10.1111/gcb.15557. Epub 2021 Mar 19.