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Towards Tree-level Evapotranspiration Estimation with Small UAVs in Precision Agriculture
Af: Haoyu Niu, YangQuan Chen Engelsk Hardback
SPAR
kr 320
Towards Tree-level Evapotranspiration Estimation with Small UAVs in Precision Agriculture
Af: Haoyu Niu, YangQuan Chen Engelsk Hardback
Estimating evapotranspiration (ET) has been one of the most critical research areas in agriculture because of water scarcity, the growing population, and climate change. The accurate estimation and mapping of ET are necessary for crop water management. Traditionally, researchers use water balance, soil moisture, weighing lysimeters, or an energy balance approach, such as Bowen ratio or eddy covariance towers to estimate ET. However, these ET methods are point-specific or area-weighted measurements and cannot be extended to a large scale. On the other hand, while remote sensing is able to provide spatially distributed measurements, the spatial resolution of multispectral satellite images is often not enough for crops with clumped canopy structures, such as trees and vines. Unmanned aerial vehicles (UAVs) can mitigate these spatial and temporal limitations. Lightweight cameras and sensors can be mounted on the UAVs and take high-resolution images. Unlike satellite imagery, the spatial resolution of the UAV images can be at the centimeter-level. UAVs can also fly on-demand, which provides high temporal imagery. 

This book examines the different UAV-based approaches of ET estimation. Models and algorithms, such as mapping evapotranspiration at high resolution with internalized calibration (METRIC), the two-source energy balance (TSEB) model, and machine learning (ML) are discussed. It also covers the challenges and opportunities for UAVs in ET estimation, with the final chapters devoted to new ET estimation methods and their potential applications for future research.
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Estimating evapotranspiration (ET) has been one of the most critical research areas in agriculture because of water scarcity, the growing population, and climate change. The accurate estimation and mapping of ET are necessary for crop water management. Traditionally, researchers use water balance, soil moisture, weighing lysimeters, or an energy balance approach, such as Bowen ratio or eddy covariance towers to estimate ET. However, these ET methods are point-specific or area-weighted measurements and cannot be extended to a large scale. On the other hand, while remote sensing is able to provide spatially distributed measurements, the spatial resolution of multispectral satellite images is often not enough for crops with clumped canopy structures, such as trees and vines. Unmanned aerial vehicles (UAVs) can mitigate these spatial and temporal limitations. Lightweight cameras and sensors can be mounted on the UAVs and take high-resolution images. Unlike satellite imagery, the spatial resolution of the UAV images can be at the centimeter-level. UAVs can also fly on-demand, which provides high temporal imagery. 

This book examines the different UAV-based approaches of ET estimation. Models and algorithms, such as mapping evapotranspiration at high resolution with internalized calibration (METRIC), the two-source energy balance (TSEB) model, and machine learning (ML) are discussed. It also covers the challenges and opportunities for UAVs in ET estimation, with the final chapters devoted to new ET estimation methods and their potential applications for future research.
Produktdetaljer
Sprog: Engelsk
Sider: 156
ISBN-13: 9783031149368
Indbinding: Hardback
Udgave:
ISBN-10: 303114936X
Udg. Dato: 28 okt 2022
Længde: 0mm
Bredde: 235mm
Højde: 155mm
Oplagsdato: 28 okt 2022
Forfatter(e): Haoyu Niu, YangQuan Chen
Forfatter(e) Haoyu Niu, YangQuan Chen


Kategori Tørke og vandforsyning


Sprog Engelsk


Indbinding Hardback


Sider 156


Udgave


Længde 0mm


Bredde 235mm


Højde 155mm


Udg. Dato 28 okt 2022


Oplagsdato 28 okt 2022

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