相关实验视频

Updated: Jul 5, 2025

Simulating Impacts of Ice Storms on Forest Ecosystems

Simulating Impacts of Ice Storms on Forest Ecosystems

Published on: June 30, 2020

在红和糖中冷解诱导的压力生成的实验和计算比较

Maryam Zarrinderakht¹, Isabell Konrad², Timothy R Wilmot³

¹Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2207 Main Mall, Vancouver, BC V6T 1Z4, Canada.

Tree physiology

|January 11, 2024

概括

树通过结解周期产生高茎压,使得树液能够被采集. 这项研究模拟了驱动这种对糖行业至关重要的过程的物理机制.

科学领域:

植物生理学植物生理学
生物物理学的生物物理.
林业科学林业科学

背景情况:

树 (Acer saccharum和Acer rubrum) 的汁液排泄对于糖行业至关重要.
在冷解周期中产生高正干压力是关键,但机制仍在争论中.
这种复杂过程的数学建模是有限的.

研究的目的:

开发和验证一个多尺度的数学模型,用于树的树液排泄.
为了确定影响积极干压力产生的关键参数.
为了深入了解驱动叶汁流动的物理机制.

主要方法:

利用现有的热量和质量传输模型在xylem.
集成的微尺度 (相变,透传输) 和宏尺度 (茎热传输) 过程.
对红树和糖树的实验数据进行了参数研究和验证的模拟.

主要成果:

多尺度冷解模型成功地复制了现实的水液排泄行为.
确定了影响茎压力增加的关键模型参数.
模拟的压力与在水汁收获季节的实验测量非常相匹配.

结论:

开发的模型为了解汁排泄提供了一个强大的框架.
这项研究为产生正压的支配性物理机制提供了新的见解.
这项研究通过阐明水汁流动背后的科学来支持糖行业.

关键词:

排泄物排泄物排泄物结融机制的结融机制周期性同质化周期性同质化积极的压力压力正的压力.红色和糖树红色和糖树克西勒姆的运输方式

更多相关视频

The Use of High-resolution Infrared Thermography HRIT for the Study of Ice Nucleation and Ice Propagation in Plants

The Use of High-resolution Infrared Thermography HRIT for the Study of Ice Nucleation and Ice Propagation in Plants

Published on: May 8, 2015

Xylem Water Distribution in Woody Plants Visualized with a Cryo-scanning Electron Microscope

Xylem Water Distribution in Woody Plants Visualized with a Cryo-scanning Electron Microscope

Published on: June 20, 2019

相关概念视频

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.