全球气候变化和马卡达米亚息地适宜性:在未来情景下基于MaxEnt的预测
Frontiers in plant science
|September 29, 2025
概括
气候变化影响麦卡达米亚种植. 这项研究为两种马卡达米亚种类设计了适合息地的项目,揭示了潜在的转变,并确定了可持续林业实践的关键环境驱动因素.
科学领域:
- 农业生态与气候科学 农业生态与气候科学
- 林业和保护生物学 林业和保护生物学
- 计算生态学和生物地理学
背景情况:
- 全球气候变化给当代林业带来了重大挑战.
- 马卡达米亚是一种经济上重要的树系,在变暖情景下面对其适应分布存在不确定性.
- 关于马卡达米亚息地与预计气候变化的时空动态的研究有限.
研究的目的:
- 根据当前和未来的气候场景,对两个商业麦卡达米亚物种进行适当的息地设计.
- 为了确定影响麦卡达米亚分布的关键生物气候变量.
- 在气候变化中为可持续的麦卡达米亚种植提供经验基础.
主要方法:
- 收集了Macadamia integrifolia和Macadamia tetraphylla的全球发生记录.
- 采用一个参数优化的MaxEnt模型来预测息地适宜性.
- 使用的生物气候变量包括温度和降水指标.
主要成果:
- 优化的MaxEnt模型显示出出色的预测性能 (AUC = 0.979).
- 确定了主要的气候驱动因素:年平均温度,同热度,最冷月份的最低温度,年度降水量和最干燥月份的降水量.
- 未来的情景预测,在某些排放途径下,总息地面积增加1.13-7.51%,具有显著的区域差异 (例如,巴西的息地减少,中国的扩张).
- 麦卡达米亚全叶植物显示出比麦卡达米亚四叶植物更大的种植潜力和扩张可行性.
结论:
- 已经阐明了主要的环境驱动因素和目前息地适合麦卡达米亚物种.
- 预计马卡达米亚分布的气候驱动转变,在不同地区和物种产生不同的影响.
- 研究结果为开发适应性策略提供了关键的见解,以在全球变暖下实现可持续的麦当利亚种植.
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