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中欧森林中早期干扰后重组的模式

Rupert Seidl^1,2, Mária Potterf¹, Jörg Müller^3,4

¹School of Life Sciences, Technical University of Munich, Hans-Carl-von-Carlowitz-Platz 2 , Freising 85354, Germany.

Proceedings. Biological sciences

|September 24, 2024

概括

中欧的森林正在迅速变化,原因是干旱和树皮甲虫导致树木死亡率增加. 管理和更大面积放大了这些变化,加速了森林重组.

科学领域:

森林生态森林生态
气候变化影响气候变化影响
干扰生态学干扰生态学

背景情况:

气候变化正在增加森林破坏的频率和强度.
由于干旱和树皮甲虫爆发,中欧 (2018-2020年) 发生了显著的树木死亡脉动.
了解干扰后森林动态对于预测生态系统轨迹至关重要.

研究的目的:

在普遍死亡后,树木早期再生的特征.
与未受到干扰的地区相比,量化森林重组模式.
评估管理和土地面积对森林重组的影响.

主要方法:

在德国调查了120个森林地块的1244个地块.
对比管理 (回收记录,种植) 和未管理 (保留枯木) 的条件.
分析了再生密度,物种组成和与斑块大小相对的重组模式.

主要成果:

观察到高再生密度 (中位数为11,897根茎ha-1),主要来自先进的再生.
森林重组是显而易见的,仅在36.3%的补丁上发现了弹性.
种类组成的变化 (重组) 主导着重组 (61.5%),特别是在Picea abies森林中.
干扰后的管理和更大的补丁大小显著促进了森林变化.

结论:

最近严重的树木死亡事件正在加速中欧地区的森林重组.
森林管理实践影响了干扰后恢复的轨迹,经常促进物种转移.
较大的受干扰区域表现出更强烈的重组,这表明景观规模的影响.

关键词:

干旱和树皮甲虫的死亡率林业发展森林发展森林的恢复力森林的恢复力干扰后森林恢复干扰后森林恢复废弃物采伐废弃物采伐废弃物采伐树木的再生树木的再生

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