Results 41 to 50 of about 556,737 (306)

Uncertainties and Perspectives on Forest Height Estimates by Sentinel-1 Interferometry

Earth, 2022
Forest height is a key parameter in forestry. SAR interferometry (InSAR) techniques have been extensively adopted to retrieve digital elevation models (DEM) to give a representation of the continuous variation of the Earth’s topography, including forests.
Samuele De Petris, Filippo Sarvia, Enrico Borgogno-Mondino   +2 more
doaj   +1 more source

Height-diameter allometry of tropical forest trees [PDF]

Biogeosciences, 2010
Abstract. Tropical tree height-diameter (H:D) relationships may vary by forest type and region making large-scale estimates of above-ground biomass subject to bias if they ignore these differences in stem allometry. We have therefore developed a new global tropical forest database consisting of 39 955 concurrent H and D measurements encompassing 283 ...
Ted R. Feldpausch, Lindsay Banin, Oliver L. Phillips, Timothy R. Baker, Simon L. Lewis, Carlos Alberto Quesada, Kofi Affum‐Baffoe, E.J.M.M. Arets, Nicholas Berry, Michael I. Bird, Eduardo S. Brondízio, Pedro H. C. Camargo, Jérôme Chave, Gloria Djagbletey, Tomas F. Domingues, Michael Drescher, Philip M. Fearnside, Mabiane Batista França, Nikolaos M. Fyllas, Gabriela Lopez‐Gonzalez, Annette Hladik, Níro Higuchi, M. O. Hunter, Yoshihiro Iida, Kamariah Abu Salim, Abd Rahman Kassim, Michael Keller, J. Kemp, David A. King, Jon C. Lovett, Beatriz Schwantes Marimon, Ben Hur Marimon‐Junior, Eddie Lenza, Andrew R. Marshall, D. Metcalfe, Edward T. A. Mitchard, Emilio F. Morán, Bruce Nelson, Reuben Nilus, Euler Melo Nogueira, Michael Palace, S. Patiño, Kelvin S.‐H. Peh, Mireia Torello Raventos, Jan Reitsma, Gustavo Saiz, Franziska Schrodt, Bonaventure Sonké, Herman Taedoumg, Sylvester Tan, Lee White, Hannsjörg Wöll, J. Lloyd   +52 more
openaire   +7 more sources

Pol-Insar Forest Height Inversion Using Tomosar Reflectivity Profiles

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021
The realistic parameterization of the underlying (vertical) radar reflectivity profile is critical for a model-based inversion of forest height from polarimetric interferometric (Pol-InSAR) data. Indeed, an appropriate parameterization not only affects the final estimation performance, but also enables the inversion from a reduced observation space in ...
Guliaev, Roman, Kim, Junsu, Pardini, Matteo, Papathanassiou, Konstantinos   +3 more
openaire   +2 more sources

Age‐Related Characteristics of SYT1‐Associated Neurodevelopmental Disorder

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives We describe the clinical manifestations and developmental abilities of individuals with SYT1‐associated neurodevelopmental disorder (Baker‐Gordon syndrome) from infancy to adulthood. We further describe the neuroradiological and electrophysiological characteristics of the condition at different ages, and explore the associations ...
Sam G. Norwitz, Josefine Eck, Joel S. Winston, Kate Baker   +3 more
wiley   +1 more source

Underlying topography and forest height estimation from SAR tomography based on a nonparametric spectrum estimation method with low sidelobes

International Journal of Digital Earth, 2022
The underlying topography and forest height play an indispensable role in many fields, including geomorphology, civil engineering construction, forest investigation, and the modeling of natural disasters. As a new microwave remote sensing technology with
Youjun Wang, Xing Peng, Qinghua Xie, Xinwu Li, Xiaomin Luo, Yanan Du, Bing Zhang   +6 more
doaj   +1 more source

Object-based semi-automatic approach for forest structure characterization using lidar data in heterogeneous Pinus sylvestris stands. [PDF]

, 2008
In this paper, we present a two-stage approach for characterizing the structure of Pinus sylvestris L. stands in forests of central Spain. The first stage was to delimit forest stands using eCognition and a digital canopy height model (DCHM) derived from
Cohen, Warren, García Abril, Antonio, García-Montero, Luis Gonzaga, Martín Fernández, Susana, Pascual Castaño, Isabel Cristina   +4 more
core   +2 more sources

New global map of forest canopy height [PDF]

Eos, Transactions American Geophysical Union, 2012
Just how tall are forests around the world? A new global map shows forest canopy height at 1‐kilometer spatial resolution. Simard et al. used satellite data from the Geoscience Laser Altimeter System aboard the Ice, Cloud, and land Elevation Satellite (ICESat) to create a global map of the height of the forest canopy.
openaire   +1 more source

Height-diameter allometry for tropical forest in northern Amazonia

PLOS ONE, 2021
Height measurements are essential to manage and monitor forest biomass and carbon stocks. However, accurate estimation of this variable in tropical ecosystems is still difficult due to species heterogeneity and environmental variability. In this article, we compare and discuss six nonlinear allometric models parameterized at different scales (local ...
Robson Borges de Lima, Eric Bastos Görgens, Fernando Elias, Jadson Coelho de Abreu, Aldine Luiza Baia, Cinthia Pereira de Oliveira, Diego Armando Silva da Silva, Anderson Pedro Bernardina Batista, Robson Carmo Lima, Eleneide Doff Sotta, Rinaldo Luiz Caraciolo Ferreira, José Antônio Aleixo da Silva, Marcelino Carneiro Guedes   +12 more
openaire   +4 more sources

Discovery and Targeted Proteomic Studies Reveal Striatal Markers Validated for Huntington's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Clinical trials for Huntington's disease (HD) enrolling persons before clinical motor diagnosis (CMD) lack validated biomarkers. This study aimed to conduct an unbiased discovery analysis and a targeted examination of proteomic biomarkers scrutinized by clinical validation. Methods Cerebrospinal fluid was obtained from PREDICT‐HD and
Daniel Chelsky, Cara Joyce, H. Jeremy Bockholt, Paul A. Rudnick, William H. Adams, Fiona McAllister, Justin W. Smock, Michael A. Newton, Jane S. Paulsen   +8 more
wiley   +1 more source

The development of a simple basal area increment model [PDF]

, 2011
In most cases forest practice in Austria use yield tables to predict the growth of their forests. Common yield tables show the increment of pure even-aged stands which are treated in a way the table developer recommends.
Georg Erich Kindermann
core   +2 more sources