树皮厚度和相关参数树木物种沿着一个海拔横断线导致树林在中部喜马拉雅的树林线
Ripu Daman Singh1, Surabhi Gumber2, Surendra Pratap Singh3
1Appropriate Technology India (AT India), Dehradun, 248007, Uttarakhand, India.
Environmental monitoring and assessment
|April 10, 2024
概括
喜马拉雅树林树木表现出不同的树皮厚度,随着高度的增加而减少. 尽管无火的环境,但它们的树皮表现出混合的特征,受雪和紫外线辐射等因素的影响.
科学领域:
- 生态生态学 生态生态学
- 植物学 植物学
- 森林科学 森林科学 森林科学
背景情况:
- 树林通常是无火的环境,这导致人们期望树上薄薄的树皮.
- 树木的树皮厚度可能受到火灾以外的因素的影响,例如机械阻力和环境适应.
研究的目的:
- 为了研究20种树木的树干树皮厚度 (绝对和相对) 和树皮成分组成,沿着中央喜马拉雅山脉的海拔梯度.
- 了解环境因素如何影响树林和相邻森林物种的树皮特征.
主要方法:
- 在中部喜马拉雅山脉的海拔跨度 (2100-3300米) 沿线研究了20种树种.
- 测量了总树皮厚度,相对树皮厚度和内皮的比例.
- 将森林和树林物种之间的树皮特征进行比较,考虑所有直径的树木和相似的茎直径范围 (18-20厘米) 的树木.
主要成果:
- 树皮的总厚度随着从森林到树林的高度而降低.
- 与大小相似的森林物种相比,树林物种的树皮厚度相对较低.
- 树林物种中内皮的比例高于萨凡纳物种,但与凉爽的硬质细胞和温带雨林相似.
结论:
- 喜马拉雅树林和相邻的森林物种表现出混合的树皮特征,这不仅仅是由没有火的原因决定的.
- 环境因素如降雪,风,高紫外线辐射和储水可能会影响树皮厚度和成分.
- 需要对类似生态系统进行进一步的研究,才能充分理解树皮的多功能属性.
相关概念视频
Introduction to Wood
218
Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
The structural integrity of the...
The structural integrity of the...
218
Survival Tree
84
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
Building a Survival Tree
Constructing a...
Building a Survival Tree
Constructing a...
84
Threats to Biodiversity
22.3K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
22.3K


