Results 251 to 260 of about 125,509 (280)

Environmental landscape determinants of maximum forest canopy height of boreal forests

Journal of Plant Ecology, 2019
L. Mao, C. Bater, J. Stadt, B. White, P. Tompalski, N. Coops, S. Nielsen   +6 more
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SAR radargrammetry and scanning LiDAR in predicting forest canopy height

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
Our objective was to evaluate the accuracy of estimating forest canopy height when using scanning LiDAR and TerraSAR-X stereo radargrammetry. The study area was located in southern Finland. We used SAR radargrammetry and LiDAR to extract 3D point clouds to derive predictors used in the non-parametric prediction of forest canopy height.
Vastaranta, Mikko, Holopainen, Markus, Karjalainen, Mika, Kankare, Ville, Hyyppä, Juha, Kaasalainen, Sanna, Hyyppä, Hannu   +7 more
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Retrieving Forest Canopy Height From ICESat-2 Data by an Improved DRAGANN Filtering Method and Canopy Top Photons Classification

IEEE Geoscience and Remote Sensing Letters, 2022
Lots of noise photons limit the application of Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) in forest canopy height retrieval. Abundant noise photons lead to unstable filtering results, thus affecting the canopy top photons classification ...
Shijuan Gao, Yi Li, Jianjun Zhu, Haiqiang Fu, Cui Zhou   +4 more
semanticscholar   +1 more source

Impacts of Water Stress on Forest Recovery and Its Interaction with Canopy Height [PDF]

International Journal of Environmental Research and Public Health, 2018
Global climate change is leading to an increase in the frequency, intensity, and duration of drought events, which can affect the functioning of forest ecosystems. Because human activities such as afforestation and forest attributes such as canopy height may exhibit considerable spatial differences, such differences may alter the recovery paths of ...
C Yi, Xiang Zhao, Shan Gao
exaly   +3 more sources

Experiment on extracting forest canopy height from Worldview-2

2011 Eighth International Conference on Fuzzy Systems and Knowledge Discovery (FSKD), 2011
Taking advantage of rational polynomial coefficient (RPC) data delivered along with the very high resolution satellite (VHRS) Worldview-2 images, we proposed an easy RPC adjustment method for the commercial software ENVI to generate digital surface model (DSM) with only one ground control point (GCP). The DSM was then used to derive canopy crown height
Huaguo Huang, Biao Cao
openaire   +1 more source

Model-Based Estimation of Forest Canopy Height and Biomass in the Canadian Boreal Forest Using Radar, LiDAR, and Optical Remote Sensing

IEEE Transactions on Geoscience and Remote Sensing, 2021
One of the fundamental technical challenges of any new spaceborne vegetation remote sensing mission is the determination of what sensor(s) to place onboard and what, if any, overlapping modes of operation they will employ as each onboard sensor adds ...
M. Benson, L. Pierce, K. Bergen, K. Sarabandi   +3 more
semanticscholar   +1 more source

Experimental warming across a tropical forest canopy height gradient reveals minimal photosynthetic and respiratory acclimation.

Plant, Cell and Environment, 2021
Tropical forest canopies cycle vast amounts of carbon, yet we still have a limited understanding of how these critical ecosystems will respond to climate warming.
Kelsey R. Carter, T. Wood, S. Reed, Kaylie M Butts, M. Cavaleri   +4 more
semanticscholar   +1 more source

Water availability predicts forest canopy height at the global scale

Ecology Letters, 2015
AbstractThe tendency of trees to grow taller with increasing water availability is common knowledge. Yet a robust, universal relationship between the spatial distribution of water availability and forest canopy height (H) is lacking. Here, we created a global water availability map by calculating an annual budget as the difference between precipitation
Klein, Tamir, Randin, Christophe F., Körner, Christian   +2 more
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A backscattering data simulation model for forest canopy based on canopy height information

2018 IEEE Radar Conference (RadarConf18), 2018
The traditional backscattering data simulation models of forest canopy use uniform distribution or random distribution to simulate the vegetation distribution that are different from the real scene. To simulate the backscattering data of forest canopy realistically, a simulation method based on canopy height information is proposed.
Qiang Gao, Meng Ke, Zegang Ding, Tao Zeng   +3 more
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Modeling forest canopy heights: The effects of canopy shape

Remote Sensing of Environment, 1997
Abstract Three-dimensional models that represent the top-of-canopy forest height structure were developed to simulate airborne laser profiling responses along forested transects. The simulator which produced these 3-D models constructed individual tree crowns according to a tree's total height, height to first branch, crown diameter, and crown shape (
openaire   +1 more source