Results 21 to 30 of about 16,908 (163)

Individual Tree Parameters Estimation for Chinese Fir (Cunninghamia lanceolate (Lamb.) Hook) Plantations of South China Using UAV Oblique Photography: Possibilities and Challenges

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Chinese fir (Cunninghamia lanceolate (Lamb.) Hook) individual tree parameters extraction is important for scientific forest management. However, high-precision parameters extraction by field investigation or spaceborne optical remote sensing is difficult
Tian Yin, Jian Zeng, Xiaoli Zhang, Xuemei Zhou   +3 more
doaj   +1 more source

Canopy Fuel Load Mapping of Mediterranean Pine Sites Based on Individual Tree-Crown Delineation

Remote Sensing, 2013
This study presents an individual tree-crown-based approach for canopy fuel load estimation and mapping in two Mediterranean pine stands. Based on destructive sampling, an allometric equation was developed for the estimation of crown fuel weight ...
Giorgos Mallinis, Ιoannis Mitsopoulos, Panagiota Stournara, Petros Patias, Alexandros Dimitrakopoulos   +4 more
doaj   +1 more source

Estimating Crown Variables of Individual Trees Using Airborne and Terrestrial Laser Scanners [PDF]

Remote Sensing, 2011
In this study, individual tree height (TH), crown base height (CBH), crown area (CA) and crown volume (CV), which were considered as essential parameters for individual stem volume and biomass estimation, were estimated by both an airborne laser scanner (ALS) and a terrestrial laser scanner (TLS).
Jung, Sung-Eun, Kwak, Doo-Ahn, Park, Taejin, Lee, Woo-Kyun, Yoo, Seongjin   +4 more
openaire   +3 more sources

Extraction of Mangrove Biophysical Parameters Using Airborne LiDAR

Remote Sensing, 2013
Tree parameter determinations using airborne Light Detection and Ranging (LiDAR) have been conducted in many forest types, including coniferous, boreal, and deciduous.
Poonsak Miphokasap, Phisan Santitamnont, Kiyoshi Honda, Wasinee Wannasiri, Masahiko Nagai   +4 more
doaj   +1 more source

A New Individual Tree Species Recognition Method Based on a Convolutional Neural Network and High-Spatial Resolution Remote Sensing Imagery

Remote Sensing, 2021
Tree species surveys are crucial to forest resource management and can provide references for forest protection policy making. The traditional tree species survey in the field is labor-intensive and time-consuming, supporting the practical significance ...
Shijie Yan, Linhai Jing, Huan Wang
doaj   +1 more source

Fine-Scale Quantification of Absorbed Photosynthetically Active Radiation (APAR) in Plantation Forests with 3D Radiative Transfer Modeling and LiDAR Data

Plant Phenomics
Quantifying the relationship between light and stands or individual trees is of great significance in understanding tree competition, improving forest productivity, and comprehending ecological processes.
Xun Zhao, Jianbo Qi, Zhexiu Yu, Lijuan Yuan, Huaguo Huang   +4 more
doaj   +1 more source

Individual Tree Segmentation from LiDAR Point Clouds for Urban Forest Inventory

Remote Sensing, 2015
The objective of this study is to develop new algorithms for automated urban forest inventory at the individual tree level using LiDAR point cloud data.
Caiyun Zhang, Yuhong Zhou, Fang Qiu
doaj   +1 more source

Impact of Parameters and Tree Stand Features on Accuracy of Watershed-Based Individual Tree Crown Detection Method Using ALS Data in Coniferous Forests from North-Eastern Poland

Remote Sensing
The accurate detection of individual tree crowns and estimation of tree density is essential for effective forest management, biodiversity assessment, and ecological monitoring.
Marcin Kozniewski, Łukasz Kolendo, Szymon Chmur, Marek Ksepko   +3 more
doaj   +1 more source

Individual Tree Skeleton Extraction and Crown Prediction Method of Winter Kiwifruit Trees

智慧农业, 2023
[Objective]The proliferation of kiwifruit trees severely overlaps, resulting in a complex canopy structure, rendering it impossible to extract their skeletons or predict their canopies using conventional methods. The objective of this research is to propose a crown segmentation method that integrates skeleton information by optimizing image processing ...
LI Zhengkai, YU Jiahui, PAN Shijia, JIA Zefeng, NIU Zijie   +4 more
openaire   +1 more source

Relationship between tree growth and physical dimensions of Fagus sylvatica crowns assessed from terrestrial laser scanning

iForest - Biogeosciences and Forestry, 2015
Measurements of physical tree crown dimensions were of subjective character in the past, even though they can be considered important for the management of many silvicultural operations, such as timing of thinning operations. In our study we investigated
Seidel D, Schall P, Gille M, Ammer C
doaj   +1 more source