生物多样性对土地利用的强化在空间和时间上的反应方向一致,但规模不同
L Neuenkamp1,2,3,4, H Saiz5,6, N Schenk5
1Faculty of Biology, Bielefeld University, Bielefeld, Germany. lena.neuenkamp@uni-bielefeld.de.
Nature ecology & evolution
|November 25, 2025
概括
土地利用的强化减少了植物和节肢动物的多样性在空间和时间. 虽然空间数据可以预测生物多样性的时间变化,但时间反应不那么明显,凸显了长期监测的必要性.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 保护生物学 保护生物学
背景情况:
- 土地利用的强化是生物多样性丧失的主要驱动因素.
- 当前的研究往往依赖于时空替代,比较不同土地使用强度在一个时间点.
- 这些空间比较对于理解时间生物多样性变化的可靠性是不确定的.
研究的目的:
- 为了比较植物和节肢动物群落对土地利用密集化的空间和时间反应.
- 在生态学研究中评估空间替代时间的有效性.
- 研究生物多样性随着时间的推移而变化的规模和方向.
主要方法:
- 使用了150个时间序列数据集,涵盖了德国草原的11年.
- 分析了与土地使用强度相关的植物和节肢动物α-多样性 (α-多样性) 和β-多样性 (β-多样性) 的变化.
- 在不同空间土地使用强度中观察到的生物多样性反应与同一地点内随时间观察到的生物多样性反应进行了比较.
主要成果:
- 土地利用的强化,在空间和时间上,导致植物和节肢动物α-多样性和β-多样性下降.
- 生物多样性对土地利用强化反应的方向在空间和时间分析之间是一致的.
- 与空间反应相比,α-多样性和β-多样性的时间反应的规模较小.
结论:
- 空间替代时间是一种有价值的方法,用于估计因土地使用加剧而导致的生物多样性的时间趋势.
- 时间上的生物多样性变化可能不如空间比较所暗示的那么明显,这可能是由于土地利用的时间变化较小,生物多样性响应的时间滞后.
- 标准化,长期的生态监测对于准确捕捉延迟的生物多样性反应和了解环境变化的全时过程至关重要.
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