Results 61 to 70 of about 125,509 (280)

Forest Canopy Height Estimation from Calipso Lidar Measurement [PDF]

EPJ Web of Conferences, 2016
The canopy height is an important parameter in aboveground biomass estimation. Lidar remote sensing from airborne or satellite platforms, has a unique capability for forestry applications. This study introduces an innovative concept to estimate canopy height using CALIOP two wavelengths lidar measurements.
Lu Xiaomei, Hu Yongxiang, Lucker Patricia L., Trepte Charles   +3 more
openaire   +2 more sources

Prospecting of Architectural Features Using LiDAR‐UAV Technology, Deep Neural Networks and Visualization Techniques: A Case Study in Kuélap and Cambolín (NW Peru)

Archaeological Prospection, EarlyView.
ABSTRACT High‐resolution and accurate synoptic images of terrestrial topography, even in densely forested areas, have proven valuable for archaeology by enabling the identification and characterization of relief patterns associated with ancient human activities. This study presents a novel approach that integrates digital terrain models (DTMs) obtained
Jhon A. Zabaleta‐Santisteban, Rolando Salas López, Angel J. Medina‐Medina, Katerin M. Tuesta‐Trauco, Abner S. Rivera‐Fernandez, Nerci M. Noriega‐Salazar, José A. Sánchez‐Vega, Teodoro B. Silva‐Melendez, Marlen A. Grandez‐Alberca, Jhonsy O. Silva‐López, Nilton B. Rojas‐Briceño, Manuel Oliva‐Cruz, Alexander Cotrina‐Sanchez, Elgar Barboza   +13 more
wiley   +1 more source

Estimates of forest canopy height and aboveground biomass using ICESat [PDF]

Geophysical Research Letters, 2005
Exchange of carbon between forests and the atmosphere is a vital component of the global carbon cycle. Satellite laser altimetry has a unique capability for estimating forest canopy height, which has a direct and increasingly well understood relationship to aboveground carbon storage.
Lefsky, Michael A., Harding, David J., Keller, Michael, Cohen, Warren B., Carabajal, Claudia C., Espirito-Santo, Fernando Del Bom, Hunter, Maria O., de Oliveira, Raimundo   +7 more
openaire   +2 more sources

A Century of Learning: The Story of ESA's Education Committee, 1918–2025

The Bulletin of the Ecological Society of America, EarlyView.
Abstract The Education Committee and its precursors have been highly influential within the Ecological Society of America. Here we document the Education Committee's history, from its origins in reviewing curricular materials through major contributions to ecological literacy, teaching innovation, diversity initiatives, and professional development ...
Kenneth M. Klemow, Alan R. Berkowitz, Carmen R. Cid, Tom A. Langen, Margaret D. Lowman, George Middendorf, Julie A. Reynolds   +6 more
wiley   +1 more source

Repeat airborne laser scanning to assess canopy height changes in tropical montane forests [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Tropical montane forests are vital ecosystems globally, preserving biodiversity, carbon stocks, and capturing moisture. We employed two airborne laser scanning (ALS) data sets to study changes in montane forest canopy heights in the Taita Hills, Kenya ...
J. Heiskanen, J. Heiskanen, H. Haurinen, C. Wekesa, P. Pellikka   +4 more
doaj   +1 more source

Examining the Impact of Topography and Vegetation on Existing Forest Canopy Height Products from ICESat-2 ATLAS/GEDI Data

Remote Sensing
Forest canopy height (FCH) is an important variable for estimating forest biomass and ecosystem carbon sequestration. Spaceborne LiDAR data have been used to create wall-to-wall FCH maps, such as the forest tree height map of China (FCHChina), Global ...
Yisa Li, Dengsheng Lu, Yagang Lu, Guiying Li   +3 more
semanticscholar   +1 more source

Differential Elevational Diversity Between Overstory and Understory in Tropical Forests

Biological Diversity, EarlyView.
Tropical forest overstory and understory exhibit contrasting elevational α‐diversity patterns (unimodal vs. bimodal). Community differentiation is driven by species turnover of dominant rather than rare species, highlighting the need for vertically stratified conservation across the full elevational gradient.
Xu Li, Zhipeng Li, Kunhong You, Yang Liu, Xialan Cheng, Han Sheng, Shaohang Huang, Chushu Meng, Shu‐Yi‐Dan Zhou, Zhiyang Lie, Juxiu Liu   +10 more
wiley   +1 more source

How wildlife respond to tropical cyclones: short‐term tactics and long‐term impacts

Biological Reviews, EarlyView.
ABSTRACT From butterflies to lizards and from sharks to seabirds, wildlife exhibit tactics to survive the impacts of tropical cyclones, also known as hurricanes, cyclones, or typhoons depending on where they occur. Some species seek refuge during the storm by moving, some remain in place and ride it out, and others move longer distances, avoiding the ...
Erin L. Koen, Mohamed Khalil Meliane, Zachery B. Holmes, Karl E. Miller, William J. Barichivich, Emilie Dedeban, Alex Furst, Miranda Imeri, Peyton E. Niebanck, Samantha Nunn, Kailee Pearson, Nicole Rita, Brier Ryver, Dakotah Shaffer, Susan C. Walls, E. Hance Ellington   +15 more
wiley   +1 more source

Scale dependency of lidar‐derived forest structural diversity

Methods in Ecology and Evolution, 2023
Lidar‐derived forest structural diversity (FSD) metrics—including measures of forest canopy height, vegetation arrangement, canopy cover (CC), structural complexity and leaf area and density—are increasingly used to describe forest structural ...
Jeff W. Atkins, Jennifer Costanza, Kyla M. Dahlin, Matthew P. Dannenberg, Andrew J. Elmore, Matthew C. Fitzpatrick, Christopher R. Hakkenberg, Brady S. Hardiman, Aaron Kamoske, Elizabeth A. LaRue, Carlos Alberto Silva, Atticus E. L. Stovall, Elske K. Tielens   +12 more
doaj   +1 more source

Image to Image Deep Learning for Enhanced Vegetation Height Modeling in Texas

Remote Sensing, 2023
Vegetation canopy height mapping is vital for forest monitoring. However, the high cost and inefficiency of manual tree measurements, coupled with the irregular and limited local-scale acquisition of airborne LiDAR data, continue to impede its widespread
Lonesome Malambo, Sorin Popescu
doaj   +1 more source