草原恢复推动了强大的多性生物多样性恢复,但极端气候危害了对干旱敏感的物种
Elisabeth Prangel1, Triin Reitalu1, Liis Kasari-Toussaint1
1Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia.
Global change biology
|September 17, 2025
概括
恢复欧洲生物多样性至关重要的半自然草原,迅速恢复了植物和动物物种的丰富性. 这种生态恢复还维持了土壤碳储存,这对生态系统服务和气候适应性至关重要.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 环境科学 环境科学
背景情况:
- 半自然草原是欧洲生物多样性最丰富的生态系统,但由于农业强化,放弃和植树,它们面临着快速衰退.
- 这种下降导致了显著的生物多样性丧失和生态系统功能减少,威胁到整体的生态健康.
- 草原在保护中经常被忽视,尽管它们具有生态价值,但为缓解气候而优先考虑植树.
研究的目的:
- 评估放弃草原,植树和生态恢复对多性物种丰富度和土壤状况的影响.
- 使用爱沙尼亚半自然的石灰岩草原 (alvars) 作为一个模型系统,以了解恢复动态.
- 评估恢复对碳储存的影响,并将其与植树区进行比较.
主要方法:
- 研究了木质植物移除和低强度放牧恢复对过度生长和森林植被草原的影响.
- 监测多营养物种丰富度,包括植物,授粉者,鸟类,,植物,土壤真菌和生活在地面的节肢动物.
- 在恢复的草原中分析了土壤条件和碳储存,与森林化地区相比.
主要成果:
- 历史上过度生长和森林覆盖的草原在恢复干预后迅速恢复,物种丰富度增加.
- 恢复的草原作为稳定的碳汇,储存土壤碳相当于森林化地区,没有恢复的负面影响.
- 多性物种的丰富性恢复有所不同:快速响应者 (植物,授粉者,鸟类) 迅速恢复,缓慢响应者 (藻,藻,真菌) 显示的短期变化最小,干旱敏感物种下降.
结论:
- 草原恢复对于恢复生物多样性,增强生态系统服务和建立气候弹性至关重要.
- 恢复工作可以快速增加物种丰富性,并保持重要的土壤碳库存.
- 长期监测对于充分了解和管理恢复草原的恢复轨迹至关重要.
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