Results 51 to 60 of about 1,205,740 (288)

Improving GEDI Forest Canopy Height Products by Considering the Stand Age Factor Derived from Time-Series Remote Sensing Images: A Case Study in Fujian, China

open access: yesRemote Sensing, 2023
Forest canopy height plays an important role in forest resource management and conservation. The accurate estimation of forest canopy height on a large scale is important for forest carbon stock, biodiversity, and the carbon cycle. With the technological
Xiaocheng Zhou   +7 more
doaj   +1 more source

Estimation of the canopy height model from multispectral satellite imagery with convolutional neural networks

open access: yesIEEE Access, 2022
The canopy height model (CHM) is a representation of the height of the top of vegetation from the surrounding ground level. It is crucial for the extraction of various forest characteristics, for instance, timber stock estimations and forest growth ...
S. Illarionova   +5 more
semanticscholar   +1 more source

Forest drought resistance distinguished by canopy height

open access: yesEnvironmental Research Letters, 2018
How are the survival and growth of trees under severe drought affected by their size? While some studies have shown that large trees are more vulnerable to drought than smaller trees, others found that small trees are the more vulnerable. We explored the potential relationships between canopy height and forest responses to drought indicated by tree ...
Peipei Xu   +5 more
openaire   +2 more sources

Exploring the Relationship between Forest Canopy Height and Canopy Density from Spaceborne LiDAR Observations [PDF]

open access: yesRemote Sensing, 2021
Forest structure is a useful proxy for carbon stocks, ecosystem function and species diversity, but it is not well characterised globally. However, Earth observing sensors, operating in various modes, can provide information on different components of forests enabling improved understanding of their structure and variations thereof.
Heather Kay   +4 more
openaire   +2 more sources

Effects of UAV flight height on biomass estimation of desert shrub communities

open access: yesEcological Indicators, 2023
Accurate estimation of desert vegetation biomass is crucial for monitoring changes in carbon stocks and productivity status. Unmanned aerial vehicle (UAV) remote sensing allows large-scale biomass surveys at the individual or patch scale.
Peng Mao   +5 more
doaj   +1 more source

Towards a universal lidar canopy height indicator

open access: yesCanadian Journal of Remote Sensing, 2006
A light detection and ranging (lidar) canopy height study was conducted with 13 datasets collected using four different models of airborne laser terrain mapper (ALTM) sensors over 13 widely variable vegetation types ranging in average height from
Chris Hopkinson   +4 more
openaire   +1 more source

Vegetation canopy height estimation in dynamic tropical landscapes with TanDEM‐X supported by GEDI data

open access: yesMethods in Ecology and Evolution, 2022
Vegetation canopy height is a relevant proxy for aboveground biomass, carbon stock, and biodiversity. Wall‐to‐wall information of canopy height with high spatial resolution and accuracy is not yet available on large scales.
M. Schlund   +4 more
semanticscholar   +1 more source

High-resolution mapping of forest canopy height using machine learning by coupling ICESat-2 LiDAR with Sentinel-1, Sentinel-2 and Landsat-8 data

open access: yesInternational Journal of Applied Earth Observation and Geoinformation, 2020
Forest canopy height is an important indicator of forest carbon storage, productivity, and biodiversity. The present study showed the first attempt to develop a machine-learning workflow to map the spatial pattern of the forest canopy height in a ...
Wang Li   +5 more
semanticscholar   +1 more source

New global map of forest canopy height [PDF]

open access: yesEos, 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

Satellite evidence of canopy-height dependence of forest drought resistance in southwestern China

open access: yesEnvironmental Research Letters, 2022
The frequency and intensity of drought events are increasing with warming climate, which has resulted in worldwide forest mortality. Previous studies have reached a general consensus on the size-dependency of forest resistance to drought, but further ...
Peipei Xu   +7 more
semanticscholar   +1 more source

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