Results 1 to 10 of about 29,045 (145)

A century of National Forest Inventory in Norway – informing past, present, and future decisions [PDF]

open access: yesForest Ecosystems, 2020
Past In the early twentieth century, forestry was one of the most important sectors in Norway and an agitated discussion about the perceived decline of forest resources due to over-exploitation was ongoing.
Johannes Breidenbach   +4 more
doaj   +2 more sources

A large dataset of labelled single tree point clouds, QSMs and tree graphs [PDF]

open access: yesScientific Data
High-resolution data of individual trees are critical for advancing forest monitoring, inventory development, and ecological research. This dataset, BioDiv-3DTrees, comprises 4,952 individual tree point clouds of 19 species, captured using Terrestrial ...
Nils Griese, Martin Ritzert, Nils Nölke
doaj   +2 more sources

MONOCULAR DEPTH ESTIMATION IN FOREST ENVIRONMENTS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Depth estimation from a single image is a challenging task, especially inside the highly structured forest environment. In this paper, we propose a supervised deep learning model for monocular depth estimation based on forest imagery.
H. Hristova   +3 more
doaj   +1 more source

Mapping forest age using National Forest Inventory, airborne laser scanning, and Sentinel-2 data

open access: yesForest Ecosystems, 2020
Background The age of forest stands is critical information for forest management and conservation, for example for growth modelling, timing of management activities and harvesting, or decisions about protection areas.
Johannes Schumacher   +3 more
doaj   +1 more source

The Horizontal Distribution of Branch Biomass in European Beech: A Model Based on Measurements and TLS Based Proxies

open access: yesRemote Sensing, 2021
Forest biomass is currently among the most important and most researched target variables in forest monitoring. The common approach of observing individual tree biomass in forest inventory is to assign the total tree biomass to the dimensionless point of
César Pérez-Cruzado   +6 more
doaj   +1 more source

Improving precision of field inventory estimation of aboveground biomass through an alternative view on plot biomass

open access: yesForest Ecosystems, 2020
We contrast a new continuous approach (CA) for estimating plot-level above-ground biomass (AGB) in forest inventories with the current approach of estimating AGB exclusively from the tree-level AGB predicted for each tree in a plot, henceforth called DA (
Christoph Kleinn   +6 more
doaj   +1 more source

Long-term dynamics of stand structure and regeneration in high-stocked selection fir-beech forest stand: Croatian Dinarides case study

open access: yesiForest - Biogeosciences and Forestry, 2021
In recent decades, changes in stand structure in Central European fir-beech forests, such as accumulation of large-diameter firs, fir dieback, and poor regeneration, have been well documented. Besides environmental factors, light harvesting was suggested
Cavlović J   +4 more
doaj   +1 more source

Abundance, frequency and distribution pattern of tree species in recorded forest area of Western Himalaya

open access: yesNotulae Scientia Biologicae, 2020
The forest in India have a long history of human induced modifications through intensive forest management that began in the colonial period but continued afterwards to meet the wood-based demand until the forestry goals shifted towards conservation ...
Arun K. THAKUR   +2 more
doaj   +1 more source

The Impacts of Quality-Oriented Dataset Labeling on Tree Cover Segmentation Using U-Net: A Case Study in WorldView-3 Imagery

open access: yesRemote Sensing, 2023
Deep learning has emerged as a prominent technique for extracting vegetation information from high-resolution satellite imagery. However, less attention has been paid to the quality of dataset labeling as compared to research into networks and models ...
Tao Jiang   +4 more
doaj   +1 more source

A new species of Nidirana (Anura, Ranidae) from northern Guangxi, China [PDF]

open access: yesZooKeys, 2022
A new species of music frog, Nidirana guibeiensis sp. nov., is described from northern Guangxi, China. Based on two mtDNA fragments analyzed, phylogenetic trees reveal that N. guibeiensis sp. nov. is most closely related to N. leishanensis.
Wei-Cai Chen   +6 more
doaj   +3 more sources

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