面临世界各地多重威胁的危树木的保护优先事项
Yingying Zhu1, Xiaoting Xu1, Zhenxiang Xi1
1Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences & State Key Lab of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, P. R. China.
概括
全球临灭绝的树种分布不均,而且在很大程度上不受保护. 确定优先保护区对于保护树木多样性和森林生态系统至关重要.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 生物多样性研究 生物多样性研究
背景情况:
- 树木对于生态系统的运作和物种的生存至关重要.
- 临灭绝的树木的全球分布,灭绝的脆弱性和保护需求仍然不太清楚.
- 迫切需要采取保护战略,以应对对全球树木多样性的威胁.
研究的目的:
- 为绘制临灭绝的树种的全球分布图.
- 根据包括气候变化和人类影响在内的多个标准确定保护优先事项.
- 评估当前保护区对危树木的有效性.
主要方法:
- 绘制了来自国际自然保护联盟 (IUCN) 红色名单的1686种危树木的全球分布图.
- 评估了利用物种丰富性,生命历史特征,进化特征,气候变化预测和人类活动强度的保护优先事项.
- 通过分析物种范围与保护区的重叠来评估保护的有效性.
主要成果:
- 危树种的分布在全球范围内不均,热点集中在热带地区.
- 大多数临灭绝的树木受到保护不足,只有153个物种完全被保护区所覆盖.
- 确定了253个高优先级的保护区,其中许多受到高度威胁和保护不足,很大一部分缺乏保护计划.
结论:
- 对临灭绝的树木的保护工作不足,需要有针对性的干预.
- 确定的优先区域和未受保护物种为未来的保护战略提供了路线图.
- 有效的保护规划对于2020年后的全球生物多样性框架和森林生态系统弹性至关重要.
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