在复杂的热带草原内估计高密度的地面生物质,使用Worldview-3图像
Rowan Naicker1, Onisimo Mutanga2, Kabir Peerbhay2
1Discipline of Geography, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg, 3209, South Africa. NaickerR1@ukzn.ac.za.
Environmental monitoring and assessment
|March 15, 2024
概括
使用Worldview-3图像可以监测退化的草原. 修改的植被指数和图像处理技术克服了生物质信号和,以改善牧场管理.
科学领域:
- 生态生态学 生态生态学
- 遥感 遥感 遥感 遥感
- 农业科学 农业科学
背景情况:
- 草原生态系统因城市化和农业而面临退化.
- 化肥用于草原恢复,需要有效的监测.
- 传统指数中的生物质信号和阻碍了密集植被的监测.
研究的目的:
- 为了评估Worldview-3图像,用于监测高密度的热带草原.
- 通过修改的植被指数和图像处理来减少生物质信号和.
- 开发一个具有成本效益的牧场管理框架.
主要方法:
- 使用了高分辨率的世界视图-3图像.
- 使用随机森林算法开发了经过修改的NDVI类型索引.
- 应用了线性对比拉伸,直方图平衡和单数值分解 (SVD).
主要成果:
- 与SVD相结合的对比增强技术改善了生物质估计.
- 从红色,绿色和NIR1频段修改的NDVI指数显示出最好的结果 (R2=0.71).
- 开发的框架有效地解决了生物质和问题.
结论:
- 世界观-3图像和修改后的指数为生物质和提供了一个解决方案.
- 该框架有助于牧场管理者评估高密度草原的植被状况.
- 这种方法为可持续的牧场管理提供了有价值的工具.
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