土地使用历史和环境过推动了大西洋雨林片段的分类学和功能多样性
Otávio Miranda Verly1, Pedro Manuel Villa2, Marcelo Vitor Gualberto Santos Chaves3
1Federal University of Viçosa, Department of Forestry Engineering, Peter Henry Rolfs Avenue, No Number, University Campus, 36.570-900, Viçosa, Minas Gerais, Brazil.
Journal of environmental management
|August 9, 2025
概括
人类和气候因素对巴西大西洋雨林碎片中的树木多样性产生重大影响. 土地使用历史和气候变量,如降水和温度,是分类学和功能多样性的关键驱动因素.
科学领域:
- 生态生态学 生态生态学
- 生物多样性研究 生物多样性研究
- 森林科学 森林科学 森林科学
背景情况:
- 巴西大西洋雨林是一个高度分散的生物多样性热点.
- 人类和环境因素对森林生态系统产生重大影响.
- 了解树木多样性的驱动因素对于在碎片化景观中的保护至关重要.
研究的目的:
- 研究人类干扰和环境因素如何影响大西洋雨林片段的分类学和功能多样性.
- 为了确定这些分散的生态系统中塑造物种组成和多样性的关键驱动因素.
主要方法:
- 利用了来自136个地块的森林库存数据,分布在9个碎片中,有不同的土地使用历史.
- 收集的环境变量 (地气候,地形) 和计算的分类学和功能多样性指数.
- 采用线性混合效应模型 (LMM) 来分析关系,将土地使用历史纳入随机效应.
主要成果:
- 在碎片特征和多样性指数中观察到显著的异质性.
- 气候 (降水,温度) 和人为 (土地使用历史,废弃以来的时间) 变量成为主要驱动因素.
- 分类学多样性主要由降水和温度解释;功能多样性受到气候和人为因素的影响.
结论:
- 土地使用历史和气候变量是巴西大西洋雨林碎片中分类学和功能树木多样性的主要驱动因素.
- 保护战略必须考虑历史的土地利用和当前的气候条件,以有效地管理这些分散的森林中的生物多样性.
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