Results 11 to 20 of about 1,457,519 (305)

Forest canopy analysis in the Alpine environment: comparison among assessment methods

open access: yesForest@, 2013
Forest canopy analysis in the Alpine environment: comparison among assessment methods. Forest canopy is an important ecological feature of forest stands and can be expressed as Leaf Area Index (LAI) or canopy cover percentage.
Pastorella F, Paletto A
doaj   +2 more sources

Forest Canopy Cover Inversion Exploration Using Multi-Source Optical Data and Combined Methods [PDF]

open access: yes, 2023
An accurate estimation of canopy cover can provide an important basis for forest ecological management by understanding the forest status and change patterns.
Armando Marino   +13 more
core   +1 more source

Spatio-temporal change detection of forest canopy cover density in the Golestan National Park, Iran [PDF]

open access: yesEnvironmental Resources Research, 2021
In this study, spatio-temporal forest canopy cover density changes in the Golestan National Park (Iran) were assessed from 1967 to 2016 using aerial photos and satellite images in a Geographical Information Systems environment.
Mohsen Mosatfa   +2 more
doaj   +1 more source

Characterization of Canopy Layering in Forested Ecosystems Using Full Waveform Lidar

open access: yesRemote Sensing, 2013
Canopy structure, the vertical distribution of canopy material, is an important element of forest ecosystem dynamics and habitat preference. Although vertical stratification, or “canopy layering,” is a basic characterization of canopy structure for ...
Ralph Dubayah   +4 more
doaj   +1 more source

A sensitivity study of daytime net radiation during snowmelt to forest canopy and atmospheric conditions [PDF]

open access: yes, 2004
This study investigates the dependence of net radiation at snow surfaces under forest canopies on the overlying canopy density. The daily sum of positive values of net radiation is used as an index of the snowmelt rate.
Pomeroy, J   +27 more
core   +1 more source

SPECTRAL CHARACTERIZATION OF A CLOSED CANOPY AND OPEN CANOPY FOREST IN NORTHERN SIERRA MADRE NATURAL PARK [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Forest lands play crucial roles in nutrient recycling and climate regulation. The change of closed canopy forests to open canopy forests may indicate disturbance within the closed canopy forest.
C. Vidad   +8 more
doaj   +1 more source

PSOOptimizedFast Segmentation Algorithm for 3D Otsu Forest Canopy Image

open access: yesJournal of Harbin University of Science and Technology, 2019
Forest canopy image segmentation is a key step to forest canopy parameters using digital image processing methods According to the characteristics of forest canopy fisheye images with complex background and high resolution, this paper proposed a PSO ...
ZHU Liang-kuan   +3 more
doaj   +1 more source

Canopy influence on trace metal atmospheric inputs on forest ecosystems: Speciation in throughfall [PDF]

open access: yes, 2010
Trace Metal (TM: Cd, Cu, Ni, Pb, Sb and Zn) atmospheric inputs have been studied on six forested sites. In order to evaluate canopy interaction with atmospheric inputs, TM have been measured in both Open Field Precipitation (OFP) and Throughfall (TF ...
Probst, A.   +6 more
core   +1 more source

Phylogenetic Structure of Tree Species across Different Life Stages from Seedlings to Canopy Trees in a Subtropical Evergreen Broad-Leaved Forest.

open access: yesPLoS ONE, 2015
Investigating patterns of phylogenetic structure across different life stages of tree species in forests is crucial to understanding forest community assembly, and investigating forest gap influence on the phylogenetic structure of forest regeneration is
Yi Jin, Hong Qian, Mingjian Yu
doaj   +1 more source

Estimating Forest Canopy Height Using MODIS BRDF Data Emphasizing Typical-Angle Reflectances

open access: yesRemote Sensing, 2019
Forest-canopy height is an important parameter for the estimation of forest biomass and terrestrial carbon flux and climate-change research at regional and global scales.
Lei Cui   +9 more
doaj   +1 more source

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