塑造百种树木的利基分布和气候变化反应的共同驱动因素
Wenhuan Xu1, Jeanine M Rhemtulla1, Dawei Luo1
1Department of Forest and Conservation Sciences, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
Journal of environmental management
|November 3, 2024
概括
气候变化导致树木物种的息地不匹配. 大陆性和季节性降水是关键驱动因素,许多物种预计将转移分布,影响生物多样性热点.
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
- 森林科学 森林科学 森林科学
背景情况:
- 气候变化正在导致气候不匹配,物种的息地适应性比它们的分散能力更快地发生变化.
- 关于树木物种对气候变化的反应的先前研究往往集中在有限的物种或一组固定的气候变量上,使关键驱动因素不清楚.
- 了解对不同树种的集体影响对于有效的保护和管理至关重要.
研究的目的:
- 为中国100种树种开发气候利基模型 (CNM),以预测它们的未来分布.
- 确定影响多种树种的主要气候驱动因素.
- 评估气候变化对树种分布和生物多样性热点的集体影响.
主要方法:
- 开发了中国100种经济和生态重要树种的CNM.
- 根据气候变化情景,预计这些物种单独和集体的未来分布.
- 利用主要成分分析来根据地理和气候变量区分物种.
主要成果:
- 大陆性 (影响71个物种) 和季节性降水 (影响50多个物种) 是主要的气候驱动因素.
- 预计的利基范围变化:29种为"赢家" (扩张),36种为"失败者" (收缩),27种稳定,8种波动.
- 预计生物多样性热点,如恒山脉,物种组成的显著变化,物种丰富度较低的地区增加.
结论:
- 大陆性和季节性降水对于树木物种在各种物种的气候处至关重要.
- 气候变化将导致大量物种重组,特别是在生物多样性热点地区,需要积极保护.
- 该研究为确定共同的环境驱动因素和评估集体物种模式提供了一个框架,以改善林业管理和减缓气候变化.
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