揭示多边界效应:植物多样性的变化跨维度和空间,以及多样性和稳定性之间的关系
Yong Qin1, Wei Sun2, Shaowei Li2
1Lhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
Journal of environmental management
|January 3, 2025
概括
西藏高山草原的围增强了植物的功能和物种多样性,但可以减少物种多样性. 它的有效性因草原类型和气候而异,需要选择性应用以恢复生物多样性.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 牧场管理 牧场管理
背景情况:
- 植物多样性对于草原生态系统的功能至关重要.
- 围是一种共同的牧场管理策略,用于恢复退化的草原.
- 围对跨环境梯度及其空间模式的植物多样性的影响需要进一步调查.
研究的目的:
- 评估围对西藏高山草原植物物种,功能和植物遗传的α和β多样性的影响.
- 了解环境梯度如何影响植物多样性对围的反应.
- 在围管理下评估植物多样性的空间模式.
主要方法:
- 研究了37对围和放牧场沿着1800公里的西藏高原横断.
- 分析了植物物种,功能和植物遗传的α和β多样性.
- 研究了草原类型 (草原,草原) 和气候因素 (度,经度,海拔) 的影响.
主要成果:
- 围增加了植物功能和物种α多样性 (0.20%-26.18%) 和植物遗传/功能β多样性,但减少了物种β多样性 (0.70%).
- 功能多样性对围的反应在阿尔卑斯山草地比草原更为敏感.
- 围诱导了植物多样性的空间异质性,反应因经度,度和海拔而异.
结论:
- 围对西藏高山草原多样性的影响取决于环境,受草原类型和气候的影响.
- 围并不能保证植物多样性的所有方面都有积极的结果,需要选择性应用.
- 草原的恢复应优先考虑具有多样性功能和植物遗传特征的物种的均衡组成,以确保生态系统的稳定性.
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