使用光谱法在稀有和危植物群落中创建虚拟永久地块
Andrea J Tirrell1,2, Aaron E Putnam2,3, Michael I J Cianchette1
1School of Biology and Ecology University of Maine Orono Maine 04469 USA.
Applications in plant sciences
|November 2, 2023
概括
摄影计,使用结构-从-运动,创建虚拟永久地图监测植物群落. 这种方法准确地估计了物种覆盖面,为敏感的高山环境中传统地块提供了可行的替代方案.
科学领域:
- 生态生态学 生态生态学
- 环境监测 环境监测
- 地理空间分析的研究.
背景情况:
- 植物群落面临着气候变化和人类活动带来的威胁,需要有效的监测.
- 传统的永久植被地块并不总是可用于跟踪社区层面的变化.
- 开发替代的,非侵入性的监测技术对于长期的生态研究至关重要.
研究的目的:
- 评估摄影计,特别是从运动结构 (SfM) 衍生的数字表面模型 (DSM),作为建立虚拟永久图的方法.
- 为了比较来自DSM的植物物种存在率和百分比覆盖率估计与传统的现场估计.
- 评估用于长期监测实体地块不切实际的植物群落使用光度计的可行性.
主要方法:
- 利用iPhone摄影捕捉了2021年和2022年美国东北部高山社区的1米2的地块.
- 从照片中生成数字表面模型 (DSM),使用结构从运动 (SfM) 软件.
- 将物种百分比覆盖率的现场估计与从DSM中得出的估计进行了比较.
主要成果:
- 数字表面模型 (DSM) 提供了植物物种存在的有效,最小入侵和永久记录.
- 来自DSM的百分比覆盖率估计与大多数物种和基板的现场估计相比没有显著差异.
- 通过摄像度学建立的虚拟图片允许精确地对调查地点进行虚拟标记,以便在未来进行监测.
结论:
- 摄影计和SfM提供了一种低成本,准确的方法,可以随着时间的推移对敏感植物群体进行测量和记录.
- 这种方法在传统的永久地块建立是不可行的地区特别有价值.
- 使用DSM的虚拟永久地块可以实现持续和准确的生态测量工作.
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