一种开源的方法,用于在半干旱的萨凡纳地区进行空间和时间显式的草食监测
Manuel Weber1, Jonathan Strijbis2, Nicholas Osner3
1Department of Environmental Systems Science, Institute of Integrative Biology, ETH Zurich, Zurich, Switzerland; Onguma Nature Reserve, Etosha Eastern Border, Namibia.
Journal of environmental management
|February 27, 2025
概括
一个名为空间和时间显式草食监测 (STEHM) 的新工具跟踪了草食者对草原植被的影响. 这使得通过近乎实时的草食压力监测,实现适应性管理,有助于生物多样性保护.
科学领域:
- 生态生态学 生态生态学
- 保护科学 保护科学
- 遥感 遥感 遥感 遥感
背景情况:
- 有效的保护区管理对于生物多样性保护至关重要.
- 在草原中改变的草食会导致生态系统退化.
- 需要工具来监测草食动物对植被的影响.
研究的目的:
- 引入空间和时间显式草象监测 (STEHM) 工具.
- 为了提供近乎实时的草象压力监测.
- 支持保护区的适应性草食动物管理.
主要方法:
- 结合了草动物丰度估计 (YOLO v10在摄像头陷图像上) 与Sentinel-2卫星数据的植被覆盖.
- 开发了一种每周对草食动物的评估方法.
- 将草食动物的动态与地表水的可用性联系起来.
主要成果:
- 收集了超过220万张摄像机陷图像,检测了10种物种的100,826次水点访问.
- 在不同的水位上确定了不同的草禽压力.
- 在草食动物分布中观察到的季节性变化与水的可用性有关.
结论:
- 通过空间显式,近乎实时的数据,STEHM促进了适应性保护策略.
- 操纵水的可用性可以减轻缩的草禽压力.
- 该工具支持对萨凡纳恢复进行有针对性的管理.
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