如何定义森林树木之间的间距,以减轻竞争:技术说明
Khodabakhsh Zabihi1, Vivek Vikram Singh1, Aleksei Trubin1
1Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Praha-Suchdol, 165 00 Prague, Czech Republic.
Biology
|March 26, 2025
概括
优化挪威松树森林密度是抗旱能力的关键. 采用液流残留物的一种新型变量图法确定了理想的树木间距 (5.12-5.60 m),以减少竞争并增强水资源管理.
科学领域:
- 林业科学 林业科学
- 生态生态学 生态生态学
- 水文学的水文学
背景情况:
- 森林面积密度极大地影响着树木对资源,特别是水资源的竞争,影响着森林的整体健康和弹性.
- 优化树木间距离对于减轻干旱影响和有效管理森林生态系统至关重要.
- 以前用于确定最佳距离的方法在考虑复杂的环境变量时缺乏精度.
研究的目的:
- 开发和验证一种新的技术,用于确定挪威杉林中最佳树木距离,以减少物种间的竞争.
- 在温带条件下量化树木密度,树液流和树木间距之间的关系.
- 为森林管理者提供一个实用的工具,以指导削减和种植战略,以提高干旱抵御能力.
主要方法:
- 从普通最小平方 (OLS) 回归模型中利用了树木液流残留物来隔离树密度的影响.
- 在生长季节开始时使用12次连续的每日测量对101棵挪威杉树 (DBH 40 ± 5厘米) 进行过的汁液流量数据.
- 采用实验变量图来量化与树木间距差异相关的汁液流动变化.
主要成果:
- 在每 314 m2 的 10-12 棵树密度 (350 ± 32 棵树/ha) 确定了稳定的树液流动模式,对应于 5.12 m,5.34 m 和 5.60 m 的树木间距离.
- 证明了树木密度和树木间距显著影响了树液流动的变化.
- 开发的模型残留物有效地考虑了树木密度作为液液流变化的主要驱动因素.
结论:
- 使用液流残留物的新型变异图技术提供了一种可靠的方法来确定最佳树间距,以最大限度地减少竞争.
- 最佳间距 (5.12-5.60米) 通过平衡资源可用性和树木密度,提高森林对干旱的抵御力.
- 这种技术为森林管理提供了一种实用,可适应的工具,有助于可持续的稀疏和种植决策.
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