Holmgren, J. 2003. Estimation of Forest Variables using Airborne Laser Scanning. Doctoral dissertation. Airborne laser scanning can provide three-dimensional measurements of the forest canopy with high efficiency and precision. There are presently a large number of airborne laser scanning instruments in operation. The aims of the studies reported in this thesis were, to develop and validate met...

Accurate classification of tree species is essential for forest resource monitoring, management, and conservation. Based on the species, biomass model at individual-tree scale each can be accurately estimated, which improve estimation efficiency biomass. In this study, we first extracted four categories indicators: canopy height model, spectral features, vegetation indices, texture features fro...

this research was conducted to investigate spatial variability and estimate tree attributes in a plantation forest in the caspian region of iran using geostatistical analysis. sampling was performed based on a 50m?125m systematic grid in a maple stand (acer velutinum boiss) 18 years of age using circular samples of 200m2 area. totally, 96 sample plots were measured in 63 hectares and 14.25 hect...

Forest composed of many trees has an important role in maintaining environmental conditions suitable for life on the earth. There are many research which incorporate tree survey data into geographical information system, but those are not represented individual tree objects. A purpose of this study is to build the three dimensional forest map of individual tree level, by fusion of field measure...

A whole procedure of fully automatic 3D single tree modelling based on LIDAR point cloud is introduced in the paper. The evaluation of the procedure is then delivered by verifying the modelling results with field collecting data in sample plots. With the procedure, individual trees are extracted not only from the top canopy layer but also from the sub canopy layer, 3D shape of the extracted ind...

An annual growth model that predicts individual tree survival and diameter growth was developed for loblolly pine (Pinus taeda) and slash pine (Pinus elliottii) trees in East Texas as a function of individual-tree diameter, plantation age, basal area per acre, dominant height, quadratic mean diameter, and presence of fusiform rust (Cronartium quercuum [Berk.] Miyabe ex Shirai f. sp. fusiforme)....

Some modern remote sensing technologies, including LIDAR (LIght Detection And Ranging), have significantly developed recently. Laser scanners mounted on the airborne platform make it possible to collect very precise information over large areas, including tree and stand heights. A literature review shows that the model-based method of tree height determination underestimates this parameter in c...