生命:用于绘制土地覆盖变化对全球灭绝影响的指标
Alison Eyres1,2, Thomas S Ball1,2, Michael Dales2,3
1Department of Zoology, University of Cambridge, Cambridge, UK.
概括
人类息地丧失导致灭绝,但新的全球地图量化了这些影响. 该指标整合了物种数据和土地变化,以预测息地转换和恢复造成的灭绝风险.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 生物多样性科学 生物多样性科学
背景情况:
- 息地丧失是当前生物多样性危机的主要驱动因素.
- 目前用于量化灭绝风险的指标缺乏空间的明确性或无法考虑物种身份和累积息地丧失.
- 持久性得分方法虽然有价值,但在计算上是密集的,限制了其全球应用.
研究的目的:
- 开发一个计算效率高,空间显式的指标来量化土地覆盖面变化对全球物种灭绝的影响.
- 创建陆地脊椎动物土地覆盖变化对未来灭绝的影响 (LIFE) 度量的全球地图.
- 为评估各种规模的土地利用变化的灭绝影响提供一个工具.
主要方法:
- 将持久性得分方法与高性能计算相结合.
- 在1弧分分辨率下为30875个陆地脊椎动物物种生成LIFE指标的全球地图.
- 统计整合物种丰富性,特有性和历史息地丧失数据.
主要成果:
- 创建了LIFE指标的全球地图,量化了由于土地覆盖面的转换和恢复而导致预期灭绝的边际变化.
- 这种方法成功地整合了物种丰富性,特有性和过去的息地丧失.
- 生命指标地图适用于从0.5到1000平方公里的尺度.
结论:
- LIFE指标提供了与土地覆盖变化相关的灭绝影响的前所未有的定量估计.
- 这些地图为保护规划,保护区开发和了解人类活动对生物多样性的影响提供了宝贵的工具.
- 该方法允许更好地预测和减轻由息地改变驱动的生物多样性丧失.
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