森林年龄推动了中国种植和自然森林中的树木资源利用指标
Xing Zhang1, Xiaohong Chen1, Yuhui Ji1
1Key Laboratory for the Conservation and Regulation Biology of Species in Special Environments, College of Life Science, Xinjiang Normal University, Urumqi 830054, China.
Plants (Basel, Switzerland)
|April 9, 2024
概括
种植森林比自然森林更快地使用资源,森林年龄是这些策略的主要驱动因素. 树木的特征适应气候变化,转向快速投资回报模式.
科学领域:
- 生态生态学 生态生态学
- 森林科学 森林科学 森林科学
- 植物生理学 植物生理学
背景情况:
- 特定叶面积 (SLA) 和叶干物质含量 (LDMC) 是了解树木资源利用策略和预测森林对环境变化的反应的关键叶状特征.
- 之前对这些特征的研究在空间规模和物种重点上是有限的,需要研究空间变异性和影响因素.
- 在种植和自然森林之间的资源利用策略的差异,以及它们的潜在机制,仍然不太了解.
研究的目的:
- 分析中国种植森林和自然森林之间树木资源利用策略的空间差异.
- 确定影响这些策略的主导因素,比较森林年龄,气候和土壤营养.
- 研究环境变化对树木资源利用的影响.
主要方法:
- 利用了来自中国263个种植森林和434个自然森林的实地调查数据和文献 (2008-2020年).
- 采用了通用添加模型 (GAM) 和结构方程模型 (SEM) 来分析空间模式和驱动因素.
- 森林类型和环境梯度之间的叶子功能特征 (SLA和LDMC) 的比较.
主要成果:
- 种植森林的SLA和LDMC明显高于自然森林,低于自然森林,这表明"更快的投资回报"战略.
- 气温和降水的上升与向"快速投资回报"战略的转变有关.
- 森林年龄被确定为影响资源利用战略的主要因素,超过了气候和土壤因素.
结论:
- 与自然森林相比,种植森林表现出更快的资源利用策略.
- 森林年龄显著影响两种森林类型的资源利用策略,年龄的增加导致SLA更高,LDMC更低.
- 树木将资源战略适应环境变化,种植森林随着年龄的增长显示出更大的可塑性和变化.
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
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
Global Climate Change
24.3K
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.
24.3K
Habitat Fragmentation
17.5K
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
17.5K
Softwoods and Hardwoods
159
Softwoods and hardwoods, derived from different types of trees, are distinguished by their leaf structures and cellular compositions, each serving unique purposes in construction and manufacturing. Softwoods come from cone-bearing trees with needle-like leaves and are predominantly composed of longitudinal cells called tracheids and a smaller proportion of radial cells known as rays. Due to their cellular structure, softwoods are commonly used in construction for structural frames, sheathing,...
159
Ecological Disturbance
17.1K
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
17.1K


