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Updated: Sep 20, 2025

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在春季早些时候,在没有叶子的树中解开水道和水源,在春季早些时候的水汁上升过程中

Élise Bouchard^1,2, Daniel Houle^1,3, Annie Deslauriers^2,4

¹Département des Sciences Biologiques, Université du Québec à Montréal (UQÀM), Montréal, Québec, H2X1Y4, Canada.

The New phytologist

|May 30, 2025

概括

树在春季初逐渐补水,即使在雪下也能吸收土壤水. 这一对于汁液流和糖生产至关重要的过程受到冷解周期和温度的影响.

科学领域:

植物生理学植物生理学
森林生态森林生态
水文学的水文学

背景情况:

树在冬季表现出积极的茎压力,有助于栓塞的修复,并驱动糖生产的汁液排泄.
了解无叶树的水源动态对于优化汁液产量至关重要.

研究的目的:

在早春期间调查无叶树的水源动态.
为了确定这些动态对果汁产量和糖含量的影响.

主要方法:

使用重水 (D2O) 作为标记物,应用于土壤和树茎.
在55棵被挖掘的树中监测了树液同位素组成.
与天气模式,汁液量和糖含量相关联的汁液数据.

主要成果:

树在早春逐渐吸收土壤的水,即使在雪地.
根源水出现在第六个结冰解周期左右,与汁产量峰值相吻合.
最佳的汁液产量取决于寒冷的夜晚的糖度和适度的解的汁液量.

结论:

树的早春茎再水化是一个渐进的过程,受体生理学和环境因素的影响.
果汁产量受到根水吸收时间和结解周期的重大影响.
气候条件对汁产量和糖度都起着至关重要的作用.

关键词:

结解周期的周期子糖是使用的.阳性体压力是正的液液出血流出血流出血季节性压力的季节性压力.它是稳定的同位素.树干补水补水树干补水糖是糖的一种.

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