Results 21 to 30 of about 39,302 (251)

Forest Structure of Pinus ayacahuite in Southern Mexico: A Non-Parametric Analysis

South-East European Forestry, 2023
Spatial structure refers to the horizontal and vertical arrangement of individual trees, and the most accurate way to describe it within a community is to characterize tree strata in terms of their dimensions.
Karla Mayté Pérez-Vásquez, Wenceslao Santiago-García, Gregorio Ángeles-Pérez, Faustino Ruiz-Aquino, Elias Santiago-García   +4 more
doaj   +1 more source

Evaluating the behaviour of vertical structure indices in Scots pine forests [PDF]

Annals of Forest Science, 2009
Stand structure indices would appear to be good surrogate measures for biodiversity in forest ecosystems. • The vertical structure of Pinus sylvestris L. stands in Central Spain was analysed in order to evaluate their structural diversity. A comparison between two forests with similar ecological conditions but managed under different silvicultural ...
Barbeito, Ignacio, Cañellas, Isabel, Montes, Fernando   +2 more
openaire   +3 more sources

Patterns of regional site index across a North American boreal forest gradient

Environmental Research Letters, 2023
Forest structure—the height, cover, vertical complexity, and spatial patterns of trees—is a key indicator of productivity variation across forested extents. During the 2017 and 2019 growing seasons, NASA’s Arctic-Boreal Vulnerability Experiment collected
Paul M Montesano, Christopher S R Neigh, Matthew J Macander, William Wagner, Laura I Duncanson, Panshi Wang, Joseph O Sexton, Charles E Miller, Amanda H Armstrong   +8 more
doaj   +1 more source

Three-dimensional forest structure features extraction based on TomoSAR [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Forest structure is an important indicator for evaluating forest ecosystem and an indispensable input parameter for estimating forest carbon sink. Synthetic Aperture Radar (SAR) Tomography (TomoSAR), as a novel microwave remote sensing technique with 3D ...
Z. Hu, X. Peng, Q. Xie, T. Huang, Y. Wu
doaj   +1 more source

Vertical distribution and daily patterns of birds in the dry deciduous forests of central western Madagascar

Tropical Zoology, 2020
Data on the vertical distribution and ecological requirements of forest birds in western Madagascar are poorly documented. Strata use of forest-dwelling birds associated with vegetation structure and daily temperature patterns was examined in the dry ...
Jeanne Arline Rajaonarivelo, Aristide Andrianarimisa, Marie Jeanne Raherilalao, Steven Goodman   +3 more
doaj   +1 more source

Different approaches to the classification of vertical structure in homogeneous and heterogeneous forests [PDF]

Journal of Forest Science, 2010
The paper shows difficulties in the evaluation of the forest status when considering forests with different height structure (uneven-aged forests). It is the main problem in categorizing such forests. Concerning the actual forest management conception in Slovakia, it is assumed that the area of forests with close-to-nature management system will ...
V. Šebeň, M. Bošeľa
openaire   +2 more sources

Determination of Structural Characteristics of Old-Growth Forest in Ukraine Using Spaceborne LiDAR

Remote Sensing, 2021
A forest’s structure changes as it progresses through developmental stages from establishment to old-growth forest. Therefore, the vertical structure of old-growth forests will differ from that of younger, managed forests.
Ben Spracklen, Dominick V. Spracklen
doaj   +1 more source

The Potential of HT-1 Spaceborne InSAR for Forest Vertical Structure Inversion [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Spaceborne multi-baseline interferometric synthetic aperture radar (InSAR) provides an effective solution for large-scale forest vertical structure inversion.
J. Ye, L. Lu, X. Zhang, S. Guo, R. Yang, H. Zhang   +5 more
doaj   +1 more source

Vertical roughness mapping - ALS based classification of the vertical vegetation structure in forested areas [PDF]

, 2010
In this paper we describe an approach to classify forested areas based on their vertical vegetation structure using Airborne Laser Scanning (ALS) data. Surface and terrain roughness are essential input parameters for modeling of natural hazards such as avalanches and floods whereas it is basically assumed that flow velocities decrease with increasing ...
Aubrecht, Christoph, Höfle, Bernhard, Hollaus, Markus, Köstl, M., Steinnocher, K., Wagner, Wolfgang   +5 more
openaire   +1 more source

Determining vertical structure of forests in Poland using a semi-automated approach based on ALS data

Ecological Indicators
The vertical structure of the forest is one of the key characteristics of forest management, influencing biodiversity, resource competition, and various ecological processes. Despite its importance, determining the vertical structure of stands over large
Piotr Janiec, Luiza Tymińska-Czabańska, Paweł Hawryło, Michał Woda, Jarosław Socha   +4 more
doaj   +1 more source