Search Results - "Hovi, Aarne"

Spectral composition of shortwave radiation transmitted by forest canopies by Hovi, Aarne, Rautiainen, Miina

“…Key message Leaf area index and species composition influence red-to-near-infrared and red-to-shortwave-infrared transmittance ratios of boreal and temperate…”
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Understory trees in airborne LiDAR data — Selective mapping due to transmission losses and echo-triggering mechanisms by Korpela, Ilkka, Hovi, Aarne, Morsdorf, Felix

“…Understory trees in multilayered stands are often ignored in forest inventories. Information about them would benefit silviculture, wood procurement, and…”
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Estimation of boreal forest floor lichen cover using hyperspectral airborne and field data by Kuusinen, Nea, Hovi, Aarne, Rautiainen, Miina

“…Lichens are sensitive to competition from vascular plants, intensive silviculture, pollution and reindeer and caribou grazing, and can therefore serve as…”
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Classification of tree species based on hyperspectral reflectance images of stem bark by Juola, Jussi, Hovi, Aarne, Rautiainen, Miina

“…Automatization of tree species identification in the field is crucial in improving forest-based bioeconomy, supporting forest management, and facilitating in…”
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Contribution of woody elements to tree level reflectance in boreal forests by Kuusinen, Nea, Hovi, Aarne, Rautiainen, Miina

“…Spectral mixture analysis was used to estimate the contribution of woody elements to tree level reflectance from airborne hyperspectral data in boreal forest…”
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Spectral Properties of Coniferous Forests: A Review of In Situ and Laboratory Measurements by Rautiainen, Miina, Lukeš, Petr, Homolová, Lucie, Hovi, Aarne, Pisek, Jan, Mõttus, Matti

“…Coniferous species are present in almost all major vegetation biomes on Earth, though they are the most abundant in the northern hemisphere, where they form…”
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Estimating cover fraction from TLS return intensity in coniferous and broadleaved tree shoots by Schraik, Daniel, Hovi, Aarne, Rautiainen, Miina

“…Terrestrial laser scanning (TLS) provides a unique opportunity to study forest canopy structure and its spatial patterns such as foliage quantity and…”
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Hyperspectral characterization of vegetation in hemiboreal, boreal and Arctic peatlands using a geographically extensive field dataset by Salko, Sini-Selina, Hovi, Aarne, Burdun, Iuliia, Juola, Jussi, Rautiainen, Miina

“…Northern peatlands store up to 25% of global soil organic carbon and function as important hotspots for biodiversity. However, they are facing degradation from…”
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Evaluation of Accuracy and Practical Applicability of Methods for Measuring Leaf Reflectance and Transmittance Spectra by Hovi, Aarne, Forsström, Petri, Mõttus, Matti, Rautiainen, Miina

“…Leaf reflectance and transmittance spectra are urgently needed in interpretation of remote sensing data and modeling energy budgets of vegetation. The…”
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Small geographical variability observed in Norway spruce needle spectra across Europe by Hovi, Aarne, Lukeš, Petr, Homolová, Lucie, Juola, Jussi, Rautiainen, Miina

“…Foliage spectra form an important input to physically-based forest reflectance models. However, little is known about geographical variability of coniferous…”
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Physically based modelling of spectral transmittance through forest canopies by Hovi, Aarne, Janoutová, Růžena, Malenovský, Zbyněk, Schraik, Daniel, Gastellu‐Etchegorry, Jean‐Philippe, Lauret, Nicolas, Novotný, Jan, Rautiainen, Miina

“…Physically based models simulating the spectral transmittance of solar radiation through forest canopies are useful tools for examining the connections between…”
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Evaluating the performance of a double integrating sphere in measurement of reflectance, transmittance, and albedo of coniferous needles by Hovi, Aarne, Mõttus, Matti, Juola, Jussi, Manoocheri, Farshid, Ikonen, Erkki, Rautiainen, Miina

“…Leaf reflectance and transmittance spectra are essential information in many applications such as developing remote sensing methods, computing shortwave energy…”
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Evaluation of simulated bands in airborne optical sensors for tree species identification by Pant, Paras, Heikkinen, Ville, Hovi, Aarne, Korpela, Ilkka, Hauta-Kasari, Markku, Tokola, Timo

“…Airborne multispectral remote sensing devices have been used in automatic identification of tree species, and the spatial and spectral properties of the…”
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Evaluation of a forest radiative transfer model using an extensive boreal forest inventory database by Gopalakrishnan, Ranjith, Korhonen, Lauri, Mõttus, Matti, Rautiainen, Miina, Hovi, Aarne, Mehtätalo, Lauri, Maltamo, Matti, Peltola, Heli, Packalen, Petteri

“…The forest reflectance and transmittance model (FRT) is applicable over a wide swath of boreal forest landscapes mainly because its stand-specific inputs can…”
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A dataset composed of multiangular spectral libraries and auxiliary data at tree, leaf, needle, and bark level for three common European tree species by Hovi, Aarne, Forsström, Petri R., Ghielmetti, Giulia, Schaepman, Michael E., Rautiainen, Miina

“…This article describes a dataset of multiangular scattering properties of small trees (height = 0.38–0.7 m) at visible, near-infrared, and shortwave-infrared…”
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Corrigendum to ‘A dataset composed of multiangular spectral libraries and auxiliary data at tree, leaf, needle, and bark level for three common European tree species’ [Data in Brief 35 (2021) 106820] by Hovi, Aarne, Forsström, Petri R., Ghielmetti, Giulia, Schaepman, Michael E., Rautiainen, Miina

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Maastolaserkeilaimen intensiteettiarvot tarkentavat metsän latvuston rakennepiirteiden arviointia by Aarne Hovi, Daniel Schraik, Miina Rautiainen

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Questioning voxel grids: Semi-continuous sampling of leaf area density using airborne waveform lidar in boreal and hemiboreal conifer and broadleaved forests by Schraik, Daniel, Hovi, Aarne, Rautiainen, Miina

“…Plant area density measurements provide spatially explicit information about the density and distribution of canopy elements. This information is needed for…”
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Practical recommendations and limitations for pushbroom hyperspectral imaging of tree stems by Juola, Jussi, Hovi, Aarne, Rautiainen, Miina

“…In this short communication, we present a pilot study testing a new close-range sensing technology – a portable, pushbroom hyperspectral camera – in varying…”
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Crown level clumping in Norway spruce from terrestrial laser scanning measurements by Schraik, Daniel, Hovi, Aarne, Rautiainen, Miina

“…•A method for quantifying clumping at crown level using silhouette to total area ratio•Application to empirical data from young Norway spruces shows notable…”
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