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在气候变化下的亚热带中国,临灭绝的针叶树和大叶树种之间的分布转移的差异性表现
Jie Miao1, Yan Xu1, David Kay Ferguson2
1Co-Innovation Center for Sustainable Forestry in Southern China, College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China.
Plants (Basel, Switzerland)
|February 13, 2026
概括
气候变化影响临灭绝的中国树木. 宽叶物种更喜欢温暖的条件,而针叶树需要特定的降雨量,影响其未来的息地和保护需求.
科学领域:
- 生态生态学 生态生态学
- 气候变化生物学 气候变化生物学
- 保护生物学 保护生物学
背景情况:
- 全球变暖对生物多样性构成重大威胁,特别是在亚热带地区.
- 了解气候变化对临灭绝的树种分布的影响,对于有效的保护至关重要.
- 中国亚热带森林中罕见的针叶树和宽叶树种对气候变化的反应尚不清楚.
研究的目的:
- 在未来的气候情景下,评估中国9种危树种的合适分布模式和潜在转移.
- 确定影响宽叶和针叶树种的分布的关键环境因素.
- 为气候变化下的差异化保护战略提供科学基础.
主要方法:
- 使用了优化的MaxEnt模型,整合了气候,土壤和地形数据.
- 根据当前和未来的气候场景 (SSP126,SSP370,SSP585) 评估了潜在分布.
- 分析了限制宽叶和针叶树种的分布的环境因素.
主要成果:
- 马克森特模型表现出高预测准确度 (平均AUC>0.98).
- 宽叶物种受到温度的限制 (Bio11,Bio2);针叶物种受到降水的限制 (Bio17).
- 适合的息地目前位于长江流域;未来的转移显示,针叶植物物种的宽叶和场景依赖的变化将扩大,核心区域稳定.
结论:
- 对于临灭绝的宽叶和针叶树种而言,存在明显的分布限制因素.
- 未来的气候变化将导致多样化的分布转移,需要量身定制的保护方法.
- 确定保护优先事项和制定差异化战略对于保护这些物种至关重要.
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