在不同的森林管理和气候条件下,奥地利森林中站立枯木的动态变化
Janine Oettel1, Anita Zolles1, Thomas Gschwantner1
1Austrian Federal Research Centre for Forests Natural Hazards and Landscape (BFW) Vienna Austria.
The Journal of applied ecology
|March 20, 2024
概括
站立的枯木对森林生态系统至关重要,但在经营森林中减少了. 它的数量和持续性受到管理强度的影响,气候变化可能会加速枯木损失.
科学领域:
- 森林生态 森林生态
- 林业科学 林业科学
- 气候变化影响研究 影响研究
背景情况:
- 站立的枯木是森林生态系统的重要结构组成部分,影响碳循环和物种息地.
- 在经营的欧洲温带森林中,枯木的数量显著减少,需要对其动态进行研究.
- 很少有研究全面调查了环境因素,森林管理和气候变化对立死的木材的影响.
研究的目的:
- 分析与各种森林特征和环境因素相关的立木木量.
- 调查森林所有权和管理强度对蛇持久性的影响.
- 为了确定站立枯木量损失的驱动因素,并预测气候变化场景下的未来变化.
主要方法:
- 利用了奥地利国家森林库存数据的五个时期 (1981-2009).
- 对现存木材,海拔,生态区域,森林类型,所有权和管理强度进行分析.
- 使用树木,地点和气候变量,包括气候变化预测 (RCP2.6和RCP8.5) 建模了的持久性和站立木材的体积损失.
主要成果:
- 立木量主要取决于活体量库存和海拔高度,区域差异较大.
- 管理强度显著影响鱼的持久性,在密集管理和私人森林中持久性较短.
- 枯木量损失是由树的直径,高度,温度,降水和湿度驱动的; 预计气候变化会增加损失,特别是在严重的场景下 (RCP8.5),树种之间的易感性各不相同.
结论:
- 建议保护死树免受砍伐,以促进自然分解过程.
- 管理和气候变化对立木枯木动态和依赖物种的影响需要仔细考虑.
- 森林管理策略应考虑到枯木动态,以保持生态系统功能和生物多样性.
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