在过去的二十年中,全球生物多样性的完整性下降
Naiyi Liu1, Yunhe Wu2, Zihan Liu3
1Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210023, China; Department of Ecology, School of Life Sciences, Nanjing University, Nanjing, China.
The Science of the total environment
|January 24, 2025
概括
全球生物多样性的完整性正在下降,区域差异很大. 了解这些动态是有效的保护战略和保护全球生态系统的关键.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 环境科学 环境科学
背景情况:
- 有效的生物多样性保护需要了解完整性动态和空间变化.
- 目前缺乏跨尺度的综合多指标评估.
研究的目的:
- 调查2000-2020年全球,区域和国家生物多样性完整性指数 (BII) 的趋势.
- 分析BII的平均大小,时间轨迹和相对变化.
- 为改善生物多样性保护战略提供见解.
主要方法:
- 使用生物多样性完整度指数 (BII) 的年度时间序列 (2000-2020).
- 在国家,区域和全球空间尺度上分析了BII数据.
- 计算了BII的平均值,时间趋势和二十年的相对变化.
主要成果:
- 全球平均BII为76±16% (2000-2020年),区域差异很大.
- 观察到全球BII下降幅度为-0.3±1.9%/十年.
- 非洲显示BII下降幅度最大 (-1.4 ± 2.2%/十年),而欧洲显示增加 (1.0 ± 1.7%/十年).
- 相对BII变化表明,2011-2020年和2000-2010年之间4.1%的下降.
结论:
- 生物多样性的完整性在全球范围内正在下降,需要有针对性的保护工作.
- BII动态中的空间异质性凸显了对特定区域的保护规划的需要.
- 这些发现有助于阐明生物多样性的完整性动态,用于未来的保护行动.
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