在中国的西藏探索Polytrichaceae (Bryophyta) 的分布和息地偏好
Xiaotong Song1,2, Jiqi Gu1,2,3, Ling Liu1,2
1College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
Heliyon
|August 12, 2024
概括
这项研究使用最大 (MaxEnt) 模型在西藏绘制了Polytrichaceae的潜在息地. 结果显示,适合的息地集中在西藏东南部,受温度,海拔和植被的影响.
科学领域:
- 生态生态学 生态生态学
- 生物多样性 生物多样性
- 生物地理学 生物地理学 生物地理学
背景情况:
- 青海-西藏高原是全球生物多样性和生态脆弱性的重要地区.
- 在西藏,Polytrichaceae是一个关键的植物家族,对分布模式和环境相关性了解甚少.
- 了解这些因素对于保护和管理这种敏感生态系统至关重要.
研究的目的:
- 为了建模西藏Polytrichaceae的潜在适合息地.
- 确定影响它们分布的关键环境因素.
- 为该地区的植物保护提供生态洞察力.
主要方法:
- 用一个优化的最大 (MaxEnt) 模型来评估息地的适宜性.
- 使用曲线下的面积 (AUC) 和真实技能统计 (TSS) 验证了模型准确性.
- 分析了生物气候和环境变量对Polytrichaceae分布的影响.
主要成果:
- 马克森特模型表现出高精度 (AUC=0.933,TSS=0.789) 的结果.
- 潜在的适宜息地主要位于西藏东南部 (3.31%非常适宜,6.84%适宜中等,12.53%适宜低).
- 不适合的息地主导西北西藏 (77.32%).
- 主要影响因素包括最冷季度的平均温度 (Bio11),年平均温度 (Bio1),海拔,降雨量和植被覆盖面.
- 波利特里科植物喜欢温暖,潮湿和植被密集的环境.
结论:
- 西藏东南部为Polytrichaceae提供了最有利的条件.
- 温度,海拔,降水和植被是它们分布的关键决定因素.
- 这项研究增强了对西藏植物的生态理解,并支持数据驱动的保护策略.
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