Results 191 to 200 of about 29,854 (219)

Automated Estimation of Standing Dead Tree Volume Using Voxelized Terrestrial Lidar Data

IEEE Transactions on Geoscience and Remote Sensing, 2018
Standing dead trees (SDTs) are an important forest component and impact a variety of ecosystem processes, yet the carbon pool dynamics of SDTs are poorly constrained in terrestrial carbon cycling models. The ability to model wood decay and carbon cycling in relation to detectable changes in tree structure and volume over time would greatly improve such
Eric B. Putman, Sorin C. Popescu
openaire   +1 more source

Allometry and structural volume change of standing dead southern pine trees using non-destructive terrestrial LiDAR

, 2020
Tree mortality from major disturbances can greatly increase dead wood in forested areas, affecting fire intensity and behavior, wildlife habitat, and carbon dynamics. Accurately quantifying regional standing dead tree (SDT) pools, as conducted by the U.S.
Paul A. Klockow, E. Putman, J. Vogel, G. Moore, C. Edgar, S. Popescu   +5 more
semanticscholar   +1 more source

Dead trees and protected polypores in unmanaged north-temperate forest stands of Lithuania

Forest Ecology and Management, 2004
Abstract The availability of coarse woody debris (CWD) and distribution of dead trees into categories of mortality (dead standing, broken and uprooted) were investigated in north-temperate forests of central Europe (Lithuania). The studied area comprised 188.7 ha and included 18 different stands 40–130 years of age with a variety of tree species ...
Rimvydas Vasiliauskas, Albertas Vasiliauskas, Jan Stenlid, Antanas Matelis   +3 more
openaire   +1 more source

Estimating Aboveground Carbon in Live and Standing Dead Trees

2008
Carbon contained in aboveground live and standing dead tree mass can represent less than 1% to over 60% of the total forest ecosystem carbon pool. Accurate assessment of this pool is important for many forest managers and ecologists. Aboveground tree mass is estimated using published allometric equations relating diameter at breast height to total tree
openaire   +1 more source

Deep learning and model transferability for standing dead tree mapping

Timely forest health monitoring depends on fast and accurate methods that identify tree mortality due to climate change driven phenomena such as bark beetle attacks. Aerial imagery coupled with deep learning is an efficient tool for detecting standing dead trees compared to field work but requires reliable and quickly accessible applications for forest
Jaan Rönkkö, Katalin Waga, Mikko Kukkonen, Parvez Rana   +3 more
openaire   +1 more source

Implications of alternative biomass and carbon estimation methods for standing dead trees in the United States

Environmental Monitoring and Assessment
New models quantifying tree volume, biomass, and carbon have recently been implemented across the USA, termed the National-Scale Volume and Biomass (NSVB) framework. Little research has been done to quantify the implications of these new models on the standing dead tree (SDT) carbon pool, which occupies a substantial portion of the nation's total ...
Matthew B. Russell, Christopher B. Edgar, Grant M. Domke   +2 more
openaire   +2 more sources

ADA-Net: Attention-Guided Domain Adaptation Network with Contrastive Learning for Standing Dead Tree Segmentation Using Aerial Imagery

arXiv.org
Information on standing dead trees is important for understanding forest ecosystem functioning and resilience but has been lacking over large geographic regions.
Mete Ahishali, Anis Ur Rahman, E. Heinaro, S. Junttila   +3 more
semanticscholar   +1 more source

Distribution of early‐arriving saproxylic beetles on standing dead Scots pine trees

Agricultural and Forest Entomology, 2010
The community composition of early‐arriving saproxylic beetles on 80 standing and recently deceased Scots pine trees ( Pinus sylvestris L.) was examined.
openaire   +1 more source

Windthrows and Dead-standing Trees as Bark Beetle Breeding Material at Forest-clearcut Edge

Scandinavian Journal of Forest Research, 1999
Abstract The spatial distribution of windthrows and dead-standing trees as well as the occurrence of two bark beetle species, Ips typographus and Tomicus piniperda, were studied at forest-clearcut edges in southern Finland. More than 80% of the recorded dead trees were situated within the first 15 m from the clearcut border. The number of dead-standing
openaire   +1 more source

Deep Learning-based classification of tree species and standing dead trees using Silvi-Net

2021
Briechle, Sebastian, Krzystek, Peter, Vosselmann, George   +2 more
openaire   +1 more source