侵袭性草垃圾控制牧场植物群落的动态
Esben L Kjaer1, Torre J Hovick2, Kevin Sedivec3
1School of Natural Resource Sciences, North Dakota State University, Fargo, ND, USA; Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK, USA.
Journal of environmental management
|October 28, 2025
概括
垃圾堆积,而不是草,驱动着侵入性的肯塔基蓝草 (Poa pratensis) 在大平原蔓延. 清除垃圾和草改善了本地植物社区的健康状况,这表明管理应该专注于阻止垃圾形成.
科学领域:
- 生态生态学 生态生态学
- 侵袭性物种管理 侵袭性物种管理
- 植物社区动态 植物社区动态
背景情况:
- 侵入性物种,如肯塔基州蓝草 (Poa pratensis),对全球生态系统产生重大影响.
- 北美地区的火灾和放牧制度的改变促进了侵入性草本植物的扩张.
- 肯塔基州的蓝草在大平原壮成长,可能是由于草和垃圾堆积.
研究的目的:
- 为了调查驱动肯塔基州蓝草入侵的机制.
- 评估垃圾和草清除对植物社区动态的影响.
- 确定侵袭性草的有效管理策略.
主要方法:
- 一个为期50个月的实地研究在北达科他州.
- 有针对性的清除垃圾和草皮层.
- 监测植物群落指标,包括物种丰富度,均性和发生率.
主要成果:
- 肯塔基州蓝草的入侵对植物物种的丰富性,均性和发生率产生了负面影响.
- 清除垃圾和草导致植物社区动态指标的增加.
- 侵袭性垃圾覆盖和深度是这些影响的主要驱动因素,物种均性也受到活蓝草和草的影响.
结论:
- 垃圾堆积,而不是草,是推动肯塔基蓝草入侵的主要机制.
- 建议采用针对垃圾形成的管理策略,例如联合火灾和放牧.
- 这些策略可以促进本地植物的建立和表达,控制入侵性草.
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