Results 11 to 20 of about 39,302 (251)

Characterizing vertical forest structure using small-footprint airborne LiDAR [PDF]

open access: yesRemote Sensing of Environment, 2003
Abstract Characterization of forest attributes at fine scales is necessary to manage terrestrial resources in a manner that replicates, as closely as possible, natural ecological conditions. In forested ecosystems, management decisions are driven by variables such as forest composition, forest structure (both vertical and horizontal), and other ...
David L Evans   +2 more
exaly   +3 more sources

A Lidar-Radar Framework to Assess the Impact of Vertical Forest Structure on Interferometric Coherence [PDF]

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016
In this paper, we present novel modeling approaches to investigate the sensitivity of radar interferometric coherence to variations in the vertical forest canopy profile. We introduce a common framework applicable to model radar microwave extinction and structure from lidar data.
Hao Tang, Matthew Brolly, Marc Simard
exaly   +2 more sources

An Improved Sparse Bayesian Learning SAR Tomography Method and its Application for Forest Vertical Structure Inversion

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar tomography (TomoSAR) is widely used in reconstructing forest vertical structure, but accurately locating both ground and canopy scatterers in dense forest areas remains challenging.
Jie Wan   +3 more
doaj   +3 more sources

Vertical Stratification Drives Divergent Spatial Trade‐Offs Among Xylem Cell Types in Angiosperm Trees of a Mountain Forest in Eastern China [PDF]

open access: yesEcology and Evolution
Vertical stratification in forests acts as an ecological filter, driving woody plants to evolve specialized survival strategies. Angiosperms, in particular, develop secondary xylem with three interdependent functions—water transport, mechanical support ...
Qihang Yang   +6 more
doaj   +2 more sources

Pol-InSAR sensitivity to hemi-boreal forest structure at L- and P-bands

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2021
A dual-frequency approach is proposed to discriminate hemi-boreal forest species using L- and P-band data. First, it is shown that L-band is less sensitive to the forest structure than P-band.
Samira Hosseini, Franck Garestier
doaj   +1 more source

Monitoring dynamics in time of forest vertical structure with multibaseline PolInSAR data [PDF]

open access: yes2014 IEEE Geoscience and Remote Sensing Symposium, 2014
Synthetic aperture radar (SAR) waves have the capability of penetrating into forest volumes. Multibaseline (MB) polarimetric-interferometric SAR (PolInSAR) systems can retrieve information about the vertical distribution of the radar backscattered power and to relate it to the physical 3-D forest structure of the vegetation.
Pardini, M.   +4 more
openaire   +2 more sources

Dynamic stratification for vertical forest structure using aerial laser scanning over multiple spatial scales

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
The distinct vertical structure (i.e., “overstory-understory-grass”) in natural forest stand causes significant differences in species composition, carbon–water cycles, and phenology variations in different vertical layers.
Zengxin Yun   +5 more
doaj   +1 more source

Assessing the Vertical Structure of Forests Using Airborne and Spaceborne LiDAR Data in the Austrian Alps

open access: yesRemote Sensing, 2023
Vertical structure is an important parameter not only for assessment of the naturalness of a forest and several functional parameters, such as biodiversity or protection from avalanches or rockfall, but also for estimating biomass/carbon content.
Manuela Hirschmugl   +2 more
doaj   +1 more source

Mapping the vertical forest structure in a large subtropical region using airborne LiDAR data

open access: yesEcological Indicators, 2023
Vertical forest structure (VFS) refers to the vertical stratification or layering of forest communities in space, which is a fundamental characteristic of a plant community.
Xiangbei Zhou, Chungan Li
doaj   +1 more source

Characterization of Canopy Layering in Forested Ecosystems Using Full Waveform Lidar

open access: yesRemote Sensing, 2013
Canopy structure, the vertical distribution of canopy material, is an important element of forest ecosystem dynamics and habitat preference. Although vertical stratification, or “canopy layering,” is a basic characterization of canopy structure for ...
Ralph Dubayah   +4 more
doaj   +1 more source

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