Results 11 to 20 of about 25,721 (153)
Using hyperspectral remote sensing data for retrieving canopy water content
2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, 2009 Canopy water content (CWC) is important for understanding functioning of terrestrial ecosystems. Spectral derivatives at the slopes of the 970 nm and 1200 nm water absorption features offer good potential as estimators for CWC. An extensively grazed fen meadow is used as test site in this study.
Clevers, J.G.P.W., Kooistra, L.
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Evaluating canopy water content in grasslands by using in situ hyperespectral data
Mediterranean Botany, 2023 The water content of vegetation is considered a key parameter for ecological analysis as well as for agricultural and forestry applications. Remote sensing methods offer significant advantages over traditional field methods for determining the water content of vegetation at the leaf, canopy, and landscape levels.
Ahmet Karakoç, Murat Karabulut
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Canopy water content retrieval from hyperspectral remote sensing [PDF]
, 2007 Biogeochemical processes in plants, such as photosynthesis, evaporation and net primary production, are directly related to foliar water. Therefore, canopy water content is important for the understanding of the terrestrial ecosystem functioning. Spectral information related to the water absorption features at 970 nm and 1200 nm offers possibilities ...
Clevers, J.G.P.W. +2 more
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Evaluation of regression algorithms for estimating leaf area index and canopy water content from water stressed rice canopy reflectance [PDF]
Information Processing in Agriculture, 2021 Optical remote sensing (RS) with robust algorithms is needed for accurate assessment of crop canopy features. Despite intensive studies on algorithms, their performance using RS needs to be improved. We evaluated five different algorithms (partial-least-squares regression (PLSR), support vector regression (SVR), random forest regression (RFR), locally ...
Panigrahi, Niranjan, Das, Bhabani Sankar
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Using the right slope of the 970nm absorption feature for estimating canopy water content
, 2009 Canopy water content (CWC) is important for understanding the functioning of terrestrial ecosystems. Biogeochemical processes like photosynthesis, transpiration and net primary production are related to foliar water. The first derivative of the reflectance spectrum at wavelengths corresponding to the left slope of the minor water absorption band at 970
Clevers, J.G.P.W. +2 more
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Use spectral derivatives for estimating canopy water content
, 2010 Hyperspectral remote sensing has demonstrated great potential for accurate retrieval of canopy water content (CWC). This CWC is defined by the product of the leaf equivalent water thickness (EWT) and the leaf area index (LAI). In this paper the spectral information provided by the canopy water absorption feature at 970 nm for estimating and predicting ...
Clevers, J.G.P.W.
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Canopy leaf water content estimated using terrestrial LiDAR [PDF]
Agricultural and Forest Meteorology, 2017 Leaf water content (LWC) within a plant canopy plays an important role in light penetration and scattering, thus affecting reflectance simulation with radiative transfer models. It is also of key importance for the distribution of other plant biochemical parameters, fire propagation simulation and habitat suitability evaluation. Although passive remote
Xi Zhu +5 more
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Retrieval of Leaf Area Index (LAI) and Soil Water Content (WC) Using Hyperspectral Remote Sensing under Controlled Glass House Conditions for Spring Barley and Sugar Beet [PDF]
, 2010 Leaf area index (LAI) and water content (WC) in the root zone are two major hydro-meteorological parameters that exhibit a dominant control on water, energy and carbon fluxes, and are therefore important for any regional eco-hydrological or ...
Borzuchowski, Jaromir +3 more
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Canopy influence on trace metal atmospheric inputs on forest ecosystems: Speciation in throughfall [PDF]
, 2010 Trace Metal (TM: Cd, Cu, Ni, Pb, Sb and Zn) atmospheric inputs have been studied on six forested sites. In order to evaluate canopy interaction with atmospheric inputs, TM have been measured in both Open Field Precipitation (OFP) and Throughfall (TF ...
Probst, A. +6 more
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RF Loss Model for Tree Canopies with Varying Water Content
Journal of Electromagnetic Analysis and Applications, 2021 Detection of plant water status is important for monitoring plant physiology. Previous studies showed that radio waves are attenuated when passing through vegetation such as trees, and models (both empirical and analytical) were developed. However, for models to be more broadly applicable across a broad range of vegetation types and constructs, basic ...
Sonam Peden +3 more
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