Results 111 to 120 of about 23,075 (290)

Coherence Tomography for Boreal Forest: Camparison with HUTSCAT Scatterometer Measurements [PDF]

, 2008
In this paper we report on X- and L-band polarization coherence tomography in boreal forest structure mapping. We take advantage of HUTSCAT ranging scatterometer measurements and compare E-SAR derived vertical structure profiles with measured vertical ...
Praks, Jaan, Papathanassiou, Konstantinos P., Kugler, Florian, Hallikainen, Martti   +3 more
core  

Optimizing Forest Canopy Height Estimation Through Varied Photon-Counting Characteristic Parameter Analysis, Window Size, and Forest Cover [PDF]

Forests are an important component of the Earth’s ecosystems. Forest canopy height is an important fundamental indicator for quantifying forest ecosystems.
Tingting Xia, Jathun Arachchige Thilini Madushani, Jiapeng Huang, Xinran Gan   +3 more
core   +1 more source

Taxonomic reappraisal of the mangrove genus Avicennia (Acanthaceae) in India

Nordic Journal of Botany, EarlyView.
A taxonomic reappraisal of the mangrove genus Avicennia in India was undertaken through extensive field surveys and critical examination of herbarium specimens. Three taxa, Avicennia alba, Avicennia marina subsp. marina, and Avicennia officinalis, are described in detail. A synonymic list was compiled using the World Checklist of Vascular Plants (WCVP)
Subrata Mondal, Saikat Naskar
wiley   +1 more source

Ultra-High Spatial Resolution Mapping of Urban Forest Canopy Height With Multimodal Remote Sensing Data and Deep Learning Method

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Urban forest canopy height is an important indicator for urban carbon storage, vegetation ecosystems services, and devising effective forest management strategies to combat global climate change.
Kun Xiao, Xiaoyang Zhao, Ying Ding, Chen Huang, Jueyu Lin, Yuxuan Mai, Ying Sun, Qinchuan Xin   +7 more
doaj   +1 more source

Predictions of Tropical Forest Biomass and Biomass Growth Based on Stand Height or Canopy Area Are Improved by Landsat-Scale Phenology across Puerto Rico and the U.S. Virgin Islands

Remote Sensing, 2017
Remotely-sensed estimates of forest biomass are usually based on various measurements of canopy height, area, volume or texture, as derived from LiDAR, radar or fine spatial resolution imagery. These measurements are then calibrated to estimates of stand
David Gwenzi, Eileen H. Helmer, Xiaolin Zhu, Michael A. Lefsky, Humfredo Marcano-Vega   +4 more
doaj   +1 more source

Estimation of Forest Canopy Height Over Mountainous Areas Using Satellite Lidar

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014
The full waveform data of the large-footprint Geoscience Laser Altimeter System (GLAS) on the Ice, Cloud, and land Elevation Satellite, together with airborne light detection and ranging (lidar) data, were employed to retrieve the basal-area weighted mean height (Lorey's height) over sloping terrain in the Qilian mountains region, western China.
Zhou Fang, Chunxiang Cao
openaire   +1 more source

Update on Ouratea cidiana Sastre (Ochnaceae), a microendemic species from the Amazon: enlightening the identity and conservation status

Nordic Journal of Botany, EarlyView.
Ouratea cidiana (Ochnaceae) is a microendemic shrub species from the Brazilian Amazonia, occurring along the banks of the Trombetas River and restricted to the Cachoeira Porteira region, in western Pará State. Since the original collection nearly forty years ago, no additional records have been made, which is concerning given the continuous decline in ...
Clebiana de Sá Nunes, Mayara Dias Caldas, Fúvio Rubens Oliveira‐da‐ Silva, Anna Luiza Ilkiu‐ Borges, André dos Santos Bragança Gil   +4 more
wiley   +1 more source

Evaluating ICESat-2 and GEDI with Integrated Landsat-8 and PALSAR-2 for Mapping Tropical Forest Canopy Height

Remote Sensing
Mapping forest canopy height is critical for climate modeling and forest management, and tropical forests present unique challenges for remote sensing due to their dense vegetation and complex structure.
Aobo Liu, Yating Chen, Xiao Cheng
doaj   +1 more source

Canscora agni (Gentianaceae), a new species from the fire‐prone Indian savannas

Nordic Journal of Botany, EarlyView.
We describe Canscora agni from the Indian savannas as a distinct species which differs from its allied species Canscora alata in having fewer and shorter leaves, pedicel‐wings unequal across the length, bracts with glandular hair on the margins, calyx‐wings being four, wider, up to 2.3 mm, with distinct reticulate venation and having ovary length up to
Ashish N. Nerlekar, Sharad Suresh Kambale   +1 more
wiley   +1 more source

Drivers of remotely sensed tree height heterogeneity across spatial scales: Tree species diversity effects depend on local conditions and forest type

Ecological Indicators
Forests with high structural complexity provide a variety of ecosystem functions and services. They are further associated with greater ecosystem stability.
Elisabeth Rahmsdorf, Daniel Doktor, Hannes Feilhauer, Benjamin Brede, Laura Dienstbach, Nico Eisenhauer, Anke Hildebrandt, Nadja Rüger, Maximilian Lange   +8 more
doaj   +1 more source