森林底层的侵袭后移除本地植物的成功恢复是由本地社区特征推动的
1School for Environment and Sustainability, University of Michigan, Ann Arbor, Michigan, USA.
概括
在侵袭性植物被移除后恢复温带森林底层取决于本地物种特征和环境条件,而不是播种或移除频率. 专注于具有高特异叶面积 (SLA) 的物种,并在低干旱压力期间管理,以更快地恢复本土社区.
科学领域:
- 生态生态学 生态生态学
- 恢复生态学 恢复生态学
- 植物社区动态 植物社区动态
背景情况:
- 温带森林底层拥有大量的植物多样性,对当地树木的招募至关重要.
- 侵入性植物威胁着这些多样化的地下植物的持续存在,导致了常见的移除做法.
- 了解影响本土社区入侵后恢复的因素对于有效的恢复至关重要.
研究的目的:
- 调查本土的propagule可用性是否影响本土社区的恢复.
- 确定成功恢复本土植物群落的特征.
- 确定加速本土社区恢复率的环境条件.
主要方法:
- 一个多年的实地实验操纵了本地播种和侵入性去除频率在一个全因子设计.
- 收集的数据包括植物物种的组成,数量,光线的可用性和土壤水的可用性.
- 通过种植本地物种来模仿恢复实践来操纵大会历史.
主要成果:
- 原住民社区的恢复率不受种植增加或侵入性植物移除频率的影响.
- 更快的恢复率与高本地物种丰富度和拥有高特异叶面积 (SLA) 的本地社区相关.
- 低干旱压力年与最快的土著社区恢复有关.
结论:
- 后入侵性去除恢复应优先加强天然分散或人工添加具有特征有利于高资源可用性的本地物种,如高SLA.
- 管理策略应考虑环境条件,特别是有利于干旱压力较低的年份,以最大限度地提高本土社区的恢复.
- 评估本地社区特征和环境因素对于成功恢复森林底层树木至关重要.
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