Results 61 to 70 of about 688,199 (290)
Global Ecology and Conservation, 2020 Forest carbon stocks can be estimated using some easily measureable stand variables, such as basal area, mean or maximum tree height and wood density. Estimation of stand level carbon stocks per unit area of forests or woodlands is of great importance ...
Md. Nabiul Islam Khan +9 more
doaj +1 more source
Journal of Remote Sensing, 2022 Tree growth is an important indicator of forest health and can reflect changes in forest structure. Traditional tree growth estimates use easy-to-measure parameters, including tree height, diameter at breast height, and crown diameter, obtained via ...
Shuangna Jin +7 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This study examines how pore shape and manufacturing‐induced deviations affect the mechanical properties of 3D‐printed lattice materials with constant porosity. Combining µ‐CT analysis, FEM, and compression testing, the authors show that structural imperfections reduce stiffness and strength, while bulk material inhomogeneities probably enhance ...
Oliver Walker +5 more
wiley +1 more source
International Journal of Digital EarthMangroves are vital coastal ecosystems that provide crucial links between land and sea. Tree height is a key indicator for assessing mangroves’ health status. Currently, there are still numerous challenges in estimating mangrove tree height.
Bolin Fu +7 more
doaj +1 more source
Tree height integrated into pantropical forest biomass estimates [PDF]
Biogeosciences, 2012 Aboveground tropical tree biomass and carbon storage estimates commonly ignore tree height (<i>H</i>). We estimate the effect of incorporating <i>H</i> on tropics-wide forest biomass estimates in 327 plots across four continents ...
T. R. Feldpausch +85 more
doaj +1 more source
Tree Height Growth Modelling Using LiDAR-Derived Topography Information
ISPRS International Journal of Geo-Information, 2021 The concepts of ecotopes and forest sites are used to describe the correlative complexes defined by landform, vegetation structure, forest stand characteristics and the relationship between soil and physiography.
Milan Kobal, David Hladnik
doaj +1 more source
The genealogy of self-similar fragmentations with negative index as a continuum random tree [PDF]
, 2003 We encode a certain class of stochastic fragmentation processes, namely self-similar fragmentation processes with a negative index of self-similarity, into a metric family tree which belongs to the family of Continuum Random Trees of Aldous.
Haas, Benedicte, Miermont, Gregory
core +4 more sources
Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes
Advanced Functional Materials, EarlyView.This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin +7 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker +6 more
wiley +1 more source
Object-based assessment of tree attributes of Acacia tortilis in Bou-Hedma, Tunisia [PDF]
, 2010 Acacia tortilis subsp. raddiana represents the most important woody species in the pre-Saharan zone. It is the only forest tree persisting on the edge of the desert.
De Smet, Koen +7 more
core