目标树管理对Pinus massoniana种植园中底层树木再生的影响
Bi-Ran Yin1, Yong-Qi Xiang1, Qian Lyu1
1College of Forestry, Sichuan Agricultural University, Chengdu 611130, China.
Ying yong sheng tai xue bao = The journal of applied ecology
|September 8, 2023
概括
在Pinus massoniana种植园中的目标树木管理提高了森林再生. 每公150棵树的密度优化了地下植物的多样性和土壤条件,以便更好地再生.
科学领域:
- 林业科学 林业科学
- 生态生态学 生态生态学
- 土壤科学 土壤科学
背景情况:
- 自然森林再生对生态系统健康至关重要.
- 松木 (Pinus massoniana) 种植园在低山地区很常见.
- 了解目标树木管理影响对于可持续林业至关重要.
研究的目的:
- 调查目标树木管理密度对自然森林再生的影响.
- 分析对树冠结构,植物多样性和土壤特性的影响.
- 为了确定Pinus massoniana种植园的最佳管理密度.
主要方法:
- 在不同目标树密度 (100,150,200棵树·hm−2) 的Pinus massoniana种植园进行实地研究.
- 分析树冠结构,地下植物多样性 (物种丰富,丰富) 和土壤物理化学性质.
- 统计分析以将息地因素与再生指数相关联.
主要成果:
- 随着管理密度的增加,再生指数增加,显示管理场所的显著改善.
- 观察到150棵树·hm-2的最佳再生,增加了物种多样性和丰富性.
- 改善了树冠结构和增强了底层树木再生能力.
- 土壤总孔径和减少的叶面积指数是积极影响再生的关键因素.
结论:
- 目标树木管理,特别是150棵树·hm-2,有效地促进了Pinus massoniana种植园中的自然森林再生.
- 管理通过改善土壤条件和优化树冠结构来增强再生.
- 这种方法为类似生态系统的可持续森林管理提供了一个可行的策略.
相关概念视频
01:50Threats to Biodiversity
22.4K
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...
22.4K
02:36Meristems and Plant Growth
46.1K
Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.
46.1K
01:19Survival Tree
105
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...
105
03:02Primary and Secondary Growth in Roots and Shoots
57.4K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
57.4K