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在牧场,作物和本土巴西塞拉多的蒸发转化测量基于无人机载的多谱传感器

Gabriella Santos Arruda de Lima¹, Manuel Eduardo Ferreira², Jepherson Correia Sales³

¹Image Processing and GIS Laboratory (LAPIG), Federal University of Goiás (UFG), Goiânia, GO, Brazil. gabriella.arruda.lima@gmail.com.

Environmental monitoring and assessment

|October 25, 2024

概括

这项研究估计了巴西的蒸发转化率 (ET).

科学领域:

农业科学农业科学
环境科学环境科学
遥感遥感遥感遥感

背景情况:

巴西的农业,特别是塞拉多生物群,由于长期的干旱,面临着水资源短缺的问题.
有效的水资源管理对于可持续农业和保护塞拉多生态系统至关重要.

研究的目的:

用遥感和地面方法估计各种作物和土壤覆盖中的蒸发透气 (ET).
评估适用于多光谱空中成像的简单蒸发检索算法 (SAFER) 的准确性.

主要方法:

利用多谱无人机图像和哨兵卫星数据.
综合气象站数据和旋共变量 (EC) 流量塔用于验证.
应用了SAFER算法来计算常见豆类,牧场和半树叶季节性森林的ET.

主要成果:

在ET估计方面,无人机和卫星数据之间有很强的一致性 (R2 = 0.84).
通过EC流量塔测量验证的ET估计.
在豆的植被阶段观察到基于UAV的ET和EC之间的良好对应,在早期种植和衰老期间低估.

结论:

适用于无人机多光谱成像的SAFER算法提供了一种灵活和按需的ET估计方法.
这些发现提高了对水动态的理解,并支持塞拉多地区的可持续农业实践.
综合方法对于平衡水资源管理和农业生产至关重要.

关键词:

塞拉多 (Cerrado) 是一个山脉.蒸发转化是指蒸发转化.可持续的实践可持续的实践无人机无人机无人机是什么?水资源水资源是水资源.

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