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Assessment of Ponderosa Pine Vigor Using Four-Band Aerial Imagery in South Central Oregon: Crown Objects to Landscapes
tree vigor ponderosa pine remote sensing aerial imagery dry pine forest fuel treatments forest restoration
2023/12/6
Ponderosa pine is an integral part of the forested landscape in the western US; it is the dominant tree species on landscapes that provide critical ecosystem services. Moderate drought tolerance allow...
Unmanned?aerial?vehicles (UAV)-based canopy height modeling under leaf-on and leaf-off conditions for determining tree height and crown diameter (case study: Hyrcanian mixed?forest)
canopy height model digital elevation model forest inventory unmanned aerial vehicles (UAVs) tree crown architecture
2023/12/1
Tree height and crown diameter are two common individual tree attributes that can be estimated from unmanned aerial vehicle (UAV) images thanks to photogrammetry and structure from motion. This resear...
Using Tree Height, Crown Area and Stand-Level Parameters to Estimate Tree Diameter, Volume, and Biomass of Pinus radiata, Eucalyptus globulus and Eucalyptus nitens
radiata pine blue gum shinning gum diameter-height allometry crown diameter stem volume above-ground biomass growth and yield modeling remote sensing
2023/11/22
Accurate estimates of tree diameter, height, volume, and biomass are important for numerous economic and ecological applications. In this study, we report exponential equations to predict tree DBH (cm...
Yield and crown structure characteristics in a black locust (Robinia pseudoacacia L.) stand: A case study – Short Communication
forest regeneration crown indices crop tree selection volume production non-native tree species
2018/3/6
The paper provides the results of a detailed analysis of timber volume and the most important crown variables of black
locust (Robinia pseudoacacia Linnaeus) based on an experimental plot in southern...
Crown development of beech crop trees under different thinning regimes
target trees crown parameters Fagus sylvatica Linnaeus tending
2017/6/26
Crop trees are the main bearers of qualitative and value production of the stands. Although the number and production of the mentioned trees are affected by various factors, crown development by means...
Variability in leaf and crown morphology correlated with light availability in five natural populations of Quercus castaneifolia C.A. Mey
plasticity Hyrcanian forest controlled conditions leaf mass leaf area leaf area ratio
2018/3/6
In this study, we investigate seedlings of Quercus castaneifolia C.A. Mey, from five different provenances for the research
on leaf and crown morphological variations in relation to a light gradient ...
Tree health influences diameter growth along site quality, crown class and age gradients in Nothofagus forests of southern Patagonia
Nothofagus pumilio annual diameter increment
2015/4/24
We examined the influence of tree health on annual diameter increment of trees along gradients in stand site quality, crown classes and tree age in Nothofagus pumilio forests of Southern Patagonia. He...
Improving RBS estimates − effects of the auxiliary variable, stratification of the crown, and deletion of segments on the precision of estimates
randomized branch sampling multistage sampling unequal selection probabilities
2015/3/6
Randomized Branch Sampling (RBS) is a multistage sampling procedure using natural branching in order to select samples for the estimation of tree characteristics. The existing variants of the RBS meth...
Modifying the elastomechanics of the stem and the crown needle mass distribution to affect the diameter increment distribution: A field experiment on 20-year old Abies grandis trees
Abies grandis elastomechanics field experiment stress strain diameter increment distribution
2015/2/2
In the spring of 2000, field experiments were begun on three 20-year old grand fir (Abies grandis) to influence the elasto-mechanical behavior of the stem, as well as the distribution of the assimilat...
Larch crown diseases in Trentino and South Tyrol
Larix decidua Mycosphaerella laricina Meria laricis Hypodermella laricis Lachnellula wilkommii
2015/2/2
Various attacks of pathogenic fungi on the larch crown were observed in Trentino/South Tyrol, Italy, over the past few years. In 1999, severe defoliation was caused by Mycosphaerella laricina, a rarel...
Ecological aspects of dispersion of gall mites in the vertical profile of the birch crown
Acalitus rudis Phyllocoptes lionotus tree crown dispersion ecology
2015/2/2
In stands of birch Betula pendula Roth in the eastern Krušné hory Mts. the occurrence of the gall mites Acalitus rudis Canestrini and Phyllocoptes lionotus Nalepa was studied in terms of their di...
Crown Ratio and Relative Spacing Relationships for Loblolly Pine Plantations
Loblolly Pine Intensive Culture Planting Density Live Crown Ratio Relative Spacing Index
2013/3/4
Two loblolly pine (Pinus taeda L.) culture/density studies were established in 1995-1998 across the Lower Coastal Plain and Upper Coastal Plain/Piedmont regions of the southern USA. Each installation ...
Mathematical Modeling of Crown Forest Fire Spread
Forest Fire Mathematical Model Turbulence Ignition Fire Spread Control Volume Discrete Analogue
2013/3/4
Mathematical model of forest fire was based on an analysis of known experimental data and using concept and methods from reactive media mechanics. In this paper the assignment and theoretical investig...
Mathematical Modeling of Crown Forest Fire Spread
Forest Fire Mathematical Model Turbulence Ignition Fire Spread Control Volume Discrete Analogue
2013/3/4
Mathematical model of forest fire was based on an analysis of known experimental data and using concept and methods from reactive media mechanics. In this paper the assignment and theoretical investig...
Construction of Crown and Definite Diameter Height Control Diagram of Young Cryptomeria japonica Stand
clear length crown control Cryptomeria japonica definite diameter height stand density
2009/8/21
A control diagram of crown and stem form was attempted to construct based on the analysis of relationships among several stand characteristics. The data was collected from 32 young even-aged stands of...