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在中国未来气候变化下对比陆地兰花的范围变化
Li Qiu1, Hans Jacquemyn2, Kevin S Burgess3
1Jiangxi Province Key Laboratory of Plant Resources, School of Life Sciences, Nanchang University, Nanchang 330031, Jiangxi, China.
The Science of the total environment
|June 26, 2023
概括
气候变化影响了兰花的分布. 哈贝纳里亚物种可能会向北扩展范围,而卡兰特物种则面临范围大幅缩小,这凸显了在保护中需要考虑适应性特征的必要性.
科学领域:
- 生态生态学 生态生态学
- 植物学 植物学
- 气候变化生物学 气候变化生物学
背景情况:
- 气候变化显著改变了全球物种的分布和丰富性.
- 兰花科 (Orchidaceae) 是一个庞大而临灭绝的植物家族,它面临着对气候变化的未知反应.
- 哈贝纳里亚和卡兰蒂是中国和全球主要的陆地兰花系.
研究的目的:
- 为了模拟中国八种 Habenaria 和十种 Calanthe 种类的潜在分布变化.
- 为了测试狭窄范围的物种是否更容易受到气候变化的影响.
- 评估利基重叠和家族遗传关系之间的相关性.
主要方法:
- 对近期 (1970-2000) 和未来 (2081-2100) 时期的物种分布建模.
- 分析范围的变化,气候空间的变化和利基的重叠.
- 评估范围大小,利基重叠和遗传学距离之间的关系.
主要成果:
- 大多数 Habenaria 种类预计将扩大范围向北和更高的海拔地区,南部范围丧失.
- 大多数Calanthe物种预计将大幅缩小范围,向西转移到更高的海拔地区.
- 在Calanthe物种中比 Habenaria观察到更高的利基重叠;在利基重叠和基因学距离或当前范围大小之间没有发现相关性.
结论:
- Habenaria 和 Calanthe 之间的对比范围动态表明不同的气候适应性特征是关键.
- 这些兰花属的当前保护状况可能需要修订.
- 适应气候的特征对于理解兰花对气候变化的反应和为保护战略提供信息至关重要.
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