使用无人机衍生高度地图测量灌木植被覆盖面的时间变化:英国两个自然保护区的案例研究
Matthew Jordan1, Jim Vafidis2, Mark Steer1
1University of the West of England Bristol UK.
Ecology and evolution
|October 23, 2024
概括
一种新的,负担得起的方法有效地测量了灌木植被覆盖的变化. 这种方法通过跟踪自然保护区的灌木水平来帮助保护管理,为昂贵的无人机技术提供了更简单的替代方案.
科学领域:
- 生态监测 生态监测
- 保护科学是一种保护科学.
- 植被管理 植被管理
背景情况:
- 灌木植被是陆地生态系统中的重要息地,为生物多样性和牲畜提供资源.
- 在英国,有效的土地管理需要监测和管理灌木覆盖.
- 目前以无人机为基础的扫地评估方法往往是昂贵和复杂的.
研究的目的:
- 评估一种简单,具有成本效益的方法来测量灌木覆盖的时间和方向变化.
- 评估这种方法在两个英国自然保护区的可行性:丹内威银行和Flat Holm岛.
主要方法:
- 应用了2021年一项研究的方法来评估丹尼威银行和Flat Holm岛上的灌木层次.
- 在两个地点绘制了灌木生长和损失的精确位置.
- 分析了特定年间灌木覆盖百分比的时间变化.
主要成果:
- 丹威银行的扫除水平波动,从14.63% (2015年) 增加到16.52% (2017年),然后由于管理干预而下降到14.89% (2021年).
- 弗拉特霍尔姆岛的灌木覆盖率从10.18% (2019年) 下降到8.71% (2021年).
- 该方法成功地在两个地点绘制了灌木覆盖的方向变化.
结论:
- 评估的方法是一种可行的,可访问的,更便宜的替代方法,用于测量灌木层次的时间和方向变化.
- 这种方法可以帮助可视化植被的继承或减少,为保护管理目标提供信息.
- 这些发现支持对重要灌木息地的改进和成本有效的监测.
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