由于土地使用变化造成的热带生物多样性丧失被当地规模的评估严重低估
Jacob B Socolar1,2, Simon C Mills3,4, James J Gilroy4,5
1Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway.
Nature ecology & evolution
|July 22, 2025
概括
当地研究低估了土地使用变化的生物多样性损失60%. 更广泛的规模,包括多个生物地理区域,对于准确的生物多样性评估至关重要.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 生物多样性科学 生物多样性科学
背景情况:
- 人类对自然的影响发生在广的空间尺度上,但生物多样性损失估计通常依赖于本地规模的研究.
- 这种差异导致严重低估了由于土地利用变化的真正生物多样性下降.
研究的目的:
- 量化哥伦比亚的生物多样性损失,从地方到近国家范围.
- 评估空间规模对土地利用变化造成的生物多样性损失估计的影响.
主要方法:
- 利用了森林和牛牧场息地971种鸟类的现场数据集.
- 在哥伦比亚13个不同的生物地理区域采样,以捕捉空间变化.
- 分析了当地,区域和全哥伦比亚的生物多样性丧失.
主要成果:
- 在全哥伦比亚范围内,生物多样性损失平均比单个地区高出60%.
- 准确估计生物多样性丧失需要在六到七个生物地理区域采样.
- 区域生物多样性损失超过了当地损失,特别是在具有高β多样性的地区.
结论:
- 从本地规模的研究中推断出来,大大低估了整体生物多样性丧失.
- 纳入空间结构,包括跨多个生物地理区域的β-多样性,对于强大的生物多样性变化评估至关重要.
- 保护战略必须考虑更广泛的空间尺度,以有效应对土地利用变化的影响.
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