在Picea abies和Fagus sylvatica的花结构的时间和空间变化及其与气候的联系
Jožica Gričar1, Jernej Jevšenak1,2, Kyriaki Giagli3
1Slovenian Forestry Institute, Ljubljana, Slovenia.
Plant, cell & environment
|January 12, 2024
概括
树木的生长,包括花和树木环的宽度,对温度和降水具有很高的敏感性. 响应因物种和位置而异,水的可用性是影响树木辐射生长的关键因素.
科学领域:
- 森林生态 森林生态
- 树木生理学 树木生理学
- 气候变化影响 气候变化影响
背景情况:
- 了解树木对气候的反应对于森林管理至关重要.
- 叶膜和叶膜解剖学为树木生长和环境压力提供了洞察力.
- 需要长期数据集来捕捉跨年气候变化效应.
研究的目的:
- 为了研究温度和降水对叶膜解剖学和叶膜环宽度的影响.
- 为了比较温带森林生态系统中的特定物种和特定地点的反应.
- 确定Picea abies和Fagus sylvatica中辐射生长的关键气候驱动因素.
主要方法:
- 利用了来自欧洲温带森林的8年时间 (2010-2017年) 的植物群数据.
- 对Picea abies和Fagus sylvatica茎的微核进行了体质测量分析.
- 检查了花体解剖学 (管道区域,环宽) 和体环宽度.
主要成果:
- 体解剖学和体环宽度表现出高的年间变化和对气候的敏感性.
- 响应是特定于物种和地点的,在水良好的和干燥的地点有截然不同的模式.
- 最干燥的地点显示了同步反应和两种物种最窄的辐射生长.
结论:
- 水的可用性是组织和物种对天气反应的主要决定因素.
- 气候显著影响着体和花发育的季节性模式.
- 由于水的限制,捷克的网站似乎对辐射生长最为限制.
更多相关视频
10:14Author Spotlight: Leaf Trait Analysis for Climate and Ecology Reconstruction in Modern and Ancient Plant Communities
Published on: October 25, 2024
3.7K
09:36The Use of High-resolution Infrared Thermography HRIT for the Study of Ice Nucleation and Ice Propagation in Plants
Published on: May 8, 2015
9.6K
相关概念视频
Global Climate Change
24.4K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.4K
Phloem and Sugar Transport
37.3K
Like many living organisms, plants have tissues that specialize in specific plant functions. For example, shoots are well adapted to rapid growth, while roots are structured to acquire resources efficiently. However, sugar production is primarily restricted to the photosynthetic cells that reside in the leaves of angiosperm plants. Sugar and other resources are transported from photosynthetic tissues to other specialized tissues by a process called translocation.
37.3K
Responses to Heat and Cold Stress
13.5K
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.
13.5K
Adaptations that Reduce Water Loss
25.6K
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.
25.6K
What is Climate?
18.6K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
18.6K
Biological Clocks and Seasonal Responses
34.6K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
34.6K
